diff --git a/.env.example b/.env.example
index 44b12a7..2c82012 100644
--- a/.env.example
+++ b/.env.example
@@ -1,6 +1,8 @@
 # Database
-DATABASE_URL=postgresql://planarchy:planarchy_dev@localhost:5433/planarchy
-DATABASE_URL_TEST=postgresql://planarchy:planarchy_test@localhost:5434/planarchy_test
+DATABASE_URL=postgresql://capakraken:capakraken_dev@localhost:5433/capakraken
+DATABASE_URL_TEST=postgresql://capakraken:capakraken_test@localhost:5434/capakraken_test
+ALLOW_DESTRUCTIVE_DB_TOOLS=false
+CONFIRM_DESTRUCTIVE_DB_NAME=
 
 # Redis
 REDIS_URL=redis://localhost:6380
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 747b686..5a4dcea 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -218,6 +218,8 @@ jobs:
           --health-retries=5
     env:
       DATABASE_URL: postgresql://capakraken:capakraken_test@localhost:5432/capakraken_test
+      ALLOW_DESTRUCTIVE_DB_TOOLS: "true"
+      CONFIRM_DESTRUCTIVE_DB_NAME: capakraken_test
       REDIS_URL: redis://localhost:6379
       PORT: 3100
     steps:
diff --git a/.gitignore b/.gitignore
index 992bebe..d8051bf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,6 +6,7 @@ node_modules/
 
 # Build outputs
 .next/
+.next-e2e/
 dist/
 build/
 .turbo/
@@ -20,6 +21,7 @@ test-results/
 .env.test.local
 .env.production.local
 .env.*.local
+*.e2e-backup
 
 # Logs
 *.log
diff --git a/Dockerfile.dev b/Dockerfile.dev
index eafbfe4..a423f15 100644
--- a/Dockerfile.dev
+++ b/Dockerfile.dev
@@ -26,7 +26,7 @@ RUN pnpm install --frozen-lockfile
 COPY . .
 
 # Generate Prisma client
-RUN pnpm --filter @planarchy/db db:generate
+RUN pnpm --filter @capakraken/db db:generate
 
 EXPOSE 3100
 
diff --git a/Dockerfile.prod b/Dockerfile.prod
index 4894f3d..81f5758 100644
--- a/Dockerfile.prod
+++ b/Dockerfile.prod
@@ -39,12 +39,12 @@ COPY --from=deps /app/ ./
 COPY . .
 
 # Generate Prisma client
-RUN pnpm --filter @planarchy/db db:generate
+RUN pnpm --filter @capakraken/db db:generate
 
 # Build the Next.js application
 ENV NEXT_TELEMETRY_DISABLED=1
 ENV NODE_ENV=production
-RUN pnpm --filter @planarchy/web build
+RUN pnpm --filter @capakraken/web build
 
 # ============================================================
 # Stage 3: Production runtime
diff --git a/apps/web/e2e/holiday-calendar.spec.ts b/apps/web/e2e/holiday-calendar.spec.ts
new file mode 100644
index 0000000..3f8bd8c
--- /dev/null
+++ b/apps/web/e2e/holiday-calendar.spec.ts
@@ -0,0 +1,57 @@
+import { expect, test, type Page } from "@playwright/test";
+
+async function signInAsAdmin(page: Page) {
+  await page.goto("/auth/signin");
+  await page.fill('input[type="email"]', "admin@capakraken.dev");
+  await page.fill('input[type="password"]', "admin123");
+  await page.click('button[type="submit"]');
+  await expect(page).toHaveURL(/\/(dashboard|resources)/);
+}
+
+test.describe("Holiday Calendar Editor", () => {
+  test("creates a city calendar, previews a holiday, blocks duplicates and confirms deletion", async ({ page }) => {
+    const suffix = Date.now().toString();
+    const calendarName = `E2E City Calendar ${suffix}`;
+    const holidayName = `E2E Local Holiday ${suffix}`;
+
+    await signInAsAdmin(page);
+    await page.goto("/admin/vacations");
+
+    await expect(page.getByTestId("holiday-calendar-editor")).toBeVisible();
+
+    await page.getByTestId("holiday-calendar-name-input").fill(calendarName);
+    await page.getByTestId("holiday-calendar-scope-select").selectOption("CITY");
+    await page.getByTestId("holiday-calendar-country-select").selectOption({ label: "Germany (DE)" });
+    await page.getByTestId("holiday-calendar-city-select").selectOption({ label: "Muenchen" });
+    await page.getByTestId("holiday-calendar-create-button").click();
+
+    await expect(page.getByTestId(/holiday-calendar-row-/).filter({ hasText: calendarName }).first()).toBeVisible();
+    await expect(page.getByRole("heading", { name: calendarName })).toBeVisible();
+    await expect(page.getByTestId("holiday-entry-create-button")).toBeVisible();
+
+    await page.getByTestId("holiday-entry-date-input").fill("2026-08-08");
+    await page.getByTestId("holiday-entry-name-input").fill(holidayName);
+    await page.getByTestId("holiday-entry-source-input").fill("E2E");
+    await page.getByTestId("holiday-entry-create-button").click();
+
+    await expect(page.getByText(holidayName).first()).toBeVisible();
+
+    await page.getByTestId("holiday-preview-year-input").fill("2026");
+    await expect(page.getByTestId("holiday-preview-table")).toContainText(holidayName);
+    await expect(page.getByTestId("holiday-preview-table")).toContainText("2026-08-08");
+
+    await page.getByTestId("holiday-entry-date-input").fill("2026-08-08");
+    await page.getByTestId("holiday-entry-name-input").fill(`${holidayName} Duplicate`);
+    await page.getByTestId("holiday-entry-create-button").click();
+
+    await expect(page.getByText("A holiday entry for this calendar and date already exists")).toBeVisible();
+
+    page.once("dialog", (dialog) => dialog.accept());
+    await page.getByTestId(/holiday-entry-delete-/).first().click();
+    await expect(page.getByText(holidayName).first()).not.toBeVisible();
+
+    page.once("dialog", (dialog) => dialog.accept());
+    await page.getByTestId("holiday-calendar-delete-button").click();
+    await expect(page.getByRole("heading", { name: calendarName })).not.toBeVisible();
+  });
+});
diff --git a/apps/web/e2e/test-server.mjs b/apps/web/e2e/test-server.mjs
new file mode 100644
index 0000000..3eed60d
--- /dev/null
+++ b/apps/web/e2e/test-server.mjs
@@ -0,0 +1,351 @@
+import { spawn } from "node:child_process";
+import { existsSync, readFileSync, renameSync, rmSync, writeFileSync } from "node:fs";
+import { createServer } from "node:net";
+import { dirname, resolve } from "node:path";
+import { fileURLToPath } from "node:url";
+
+const currentDir = dirname(fileURLToPath(import.meta.url));
+const workspaceRoot = resolve(currentDir, "../../..");
+const webRoot = resolve(currentDir, "..");
+const webEnvLocal = resolve(webRoot, ".env.local");
+const webEnvBackup = resolve(webRoot, ".env.local.e2e-backup");
+const webDistDir = ".next-e2e";
+const webDistDirPath = resolve(webRoot, webDistDir);
+const e2ePort = process.env.PLAYWRIGHT_TEST_PORT ?? "3110";
+const e2eBaseUrl = process.env.PLAYWRIGHT_TEST_BASE_URL ?? `http://localhost:${e2ePort}`;
+const composeProjectName = `capakraken-e2e-${process.pid}`;
+const managedEnvKeys = [
+  "DATABASE_URL",
+  "REDIS_URL",
+  "NEXTAUTH_URL",
+  "NEXTAUTH_SECRET",
+  "AUTH_SECRET",
+  "E2E_TEST_MODE",
+  "NODE_ENV",
+  "PORT",
+];
+const e2eComposePrefix = "capakraken-e2e-";
+
+function dockerComposeArgs(...args) {
+  return ["compose", "-p", composeProjectName, ...args];
+}
+
+function loadEnvFile(filePath) {
+  const env = {};
+
+  try {
+    const contents = readFileSync(filePath, "utf8");
+    for (const rawLine of contents.split(/\r?\n/u)) {
+      const line = rawLine.trim();
+      if (!line || line.startsWith("#")) {
+        continue;
+      }
+
+      const separatorIndex = line.indexOf("=");
+      if (separatorIndex <= 0) {
+        continue;
+      }
+
+      const key = line.slice(0, separatorIndex).trim();
+      const rawValue = line.slice(separatorIndex + 1).trim();
+      const quoted =
+        (rawValue.startsWith("\"") && rawValue.endsWith("\"")) ||
+        (rawValue.startsWith("'") && rawValue.endsWith("'"));
+
+      env[key] = quoted ? rawValue.slice(1, -1) : rawValue;
+    }
+  } catch {
+    // Keep local runs working even when no workspace .env is present.
+  }
+
+  return env;
+}
+
+function applyEnv(env) {
+  for (const [key, value] of Object.entries(env)) {
+    process.env[key] = value;
+  }
+}
+
+function writeManagedWebEnv(rootEnv) {
+  if (existsSync(webEnvBackup)) {
+    rmSync(webEnvBackup, { force: true });
+  }
+
+  if (existsSync(webEnvLocal)) {
+    renameSync(webEnvLocal, webEnvBackup);
+  }
+
+  const contents = managedEnvKeys
+    .map((key) => {
+      const value = rootEnv[key] ?? process.env[key];
+      return value ? `${key}=${value}` : null;
+    })
+    .filter(Boolean)
+    .join("\n");
+
+  writeFileSync(webEnvLocal, `${contents}\n`, "utf8");
+}
+
+function restoreWebEnv() {
+  if (existsSync(webEnvLocal)) {
+    rmSync(webEnvLocal, { force: true });
+  }
+
+  if (existsSync(webEnvBackup)) {
+    renameSync(webEnvBackup, webEnvLocal);
+  }
+}
+
+function run(command, args, cwd) {
+  return new Promise((resolvePromise, rejectPromise) => {
+    const child = spawn(command, args, {
+      cwd,
+      env: process.env,
+      stdio: "inherit",
+    });
+
+    child.on("error", rejectPromise);
+    child.on("exit", (code) => {
+      if (code === 0) {
+        resolvePromise();
+        return;
+      }
+
+      rejectPromise(new Error(`${command} ${args.join(" ")} exited with code ${code ?? "null"}`));
+    });
+  });
+}
+
+function runQuiet(command, args, cwd) {
+  return new Promise((resolvePromise, rejectPromise) => {
+    const child = spawn(command, args, {
+      cwd,
+      env: process.env,
+      stdio: "ignore",
+    });
+
+    child.on("error", rejectPromise);
+    child.on("exit", (code) => {
+      if (code === 0) {
+        resolvePromise();
+        return;
+      }
+
+      rejectPromise(new Error(`${command} ${args.join(" ")} exited with code ${code ?? "null"}`));
+    });
+  });
+}
+
+function runCapture(command, args, cwd) {
+  return new Promise((resolvePromise, rejectPromise) => {
+    let stdout = "";
+    let stderr = "";
+    const child = spawn(command, args, {
+      cwd,
+      env: process.env,
+      stdio: ["ignore", "pipe", "pipe"],
+    });
+
+    child.stdout.on("data", (chunk) => {
+      stdout += chunk.toString();
+    });
+    child.stderr.on("data", (chunk) => {
+      stderr += chunk.toString();
+    });
+
+    child.on("error", rejectPromise);
+    child.on("exit", (code) => {
+      if (code === 0) {
+        resolvePromise(stdout);
+        return;
+      }
+
+      rejectPromise(
+        new Error(
+          `${command} ${args.join(" ")} exited with code ${code ?? "null"}${stderr ? `: ${stderr.trim()}` : ""}`,
+        ),
+      );
+    });
+  });
+}
+
+async function cleanupStaleE2eArtifacts() {
+  try {
+    const containerOutput = await runCapture("docker", ["ps", "-a", "--format", "{{.Names}}"], workspaceRoot);
+    const staleContainers = containerOutput
+      .split(/\r?\n/u)
+      .map((value) => value.trim())
+      .filter((name) => name.startsWith(e2eComposePrefix));
+
+    if (staleContainers.length > 0) {
+      await runQuiet("docker", ["rm", "-f", ...staleContainers], workspaceRoot);
+    }
+  } catch {
+    // Best-effort cleanup only.
+  }
+
+  try {
+    const networkOutput = await runCapture("docker", ["network", "ls", "--format", "{{.Name}}"], workspaceRoot);
+    const staleNetworks = networkOutput
+      .split(/\r?\n/u)
+      .map((value) => value.trim())
+      .filter((name) => name.startsWith(e2eComposePrefix));
+
+    if (staleNetworks.length > 0) {
+      await runQuiet("docker", ["network", "rm", ...staleNetworks], workspaceRoot);
+    }
+  } catch {
+    // Best-effort cleanup only.
+  }
+}
+
+async function ensureE2eDatabaseContainer() {
+  try {
+    await runQuiet("docker", dockerComposeArgs("rm", "-sf", "postgres-test"), workspaceRoot);
+  } catch {
+    // No previous test container to remove.
+  }
+
+  await run("docker", dockerComposeArgs("--profile", "test", "up", "-d", "--force-recreate", "postgres-test"), workspaceRoot);
+
+  const maxAttempts = 30;
+  for (let attempt = 1; attempt <= maxAttempts; attempt += 1) {
+    try {
+      await runQuiet(
+        "docker",
+        dockerComposeArgs("exec", "-T", "postgres-test", "pg_isready", "-U", "capakraken", "-d", "capakraken_test", "-q"),
+        workspaceRoot,
+      );
+      return;
+    } catch (error) {
+      if (attempt === maxAttempts) {
+        throw error;
+      }
+      await new Promise((resolvePromise) => setTimeout(resolvePromise, 1000));
+    }
+  }
+}
+
+function parseDatabaseName(databaseUrl) {
+  const parsed = new URL(databaseUrl);
+  return parsed.pathname.replace(/^\/+/u, "");
+}
+
+async function canBindPort(port) {
+  return new Promise((resolvePromise) => {
+    const server = createServer();
+
+    server.once("error", () => {
+      resolvePromise(false);
+    });
+    server.once("listening", () => {
+      server.close(() => resolvePromise(true));
+    });
+
+    server.listen(port, "127.0.0.1");
+  });
+}
+
+async function selectAvailablePort(preferredPort) {
+  const candidates = [
+    preferredPort,
+    ...Array.from({ length: 50 }, (_, index) => preferredPort + index + 1),
+  ];
+
+  for (const candidate of candidates) {
+    if (await canBindPort(candidate)) {
+      return candidate;
+    }
+  }
+
+  throw new Error(`No free host port available for postgres-test near ${preferredPort}.`);
+}
+
+function replaceDatabasePort(databaseUrl, port) {
+  const parsed = new URL(databaseUrl);
+  parsed.port = String(port);
+  return parsed.toString();
+}
+
+let cleanedUpComposeProject = false;
+
+async function cleanupComposeProject() {
+  if (cleanedUpComposeProject) {
+    return;
+  }
+
+  cleanedUpComposeProject = true;
+
+  try {
+    await runQuiet("docker", dockerComposeArgs("down", "--remove-orphans"), workspaceRoot);
+  } catch {
+    // Best-effort cleanup only.
+  }
+}
+
+const rootEnv = loadEnvFile(resolve(workspaceRoot, ".env"));
+applyEnv(rootEnv);
+let playwrightDatabaseUrl = process.env.PLAYWRIGHT_DATABASE_URL ?? process.env.DATABASE_URL_TEST;
+
+if (!playwrightDatabaseUrl) {
+  throw new Error("PLAYWRIGHT_DATABASE_URL or DATABASE_URL_TEST must be configured for E2E runs.");
+}
+
+const requestedTestDbPort = Number(new URL(playwrightDatabaseUrl).port || "5434");
+const selectedTestDbPort = await selectAvailablePort(requestedTestDbPort);
+playwrightDatabaseUrl = replaceDatabasePort(playwrightDatabaseUrl, selectedTestDbPort);
+
+const playwrightDatabaseName = parseDatabaseName(playwrightDatabaseUrl);
+
+if (!/(^|_)(test|e2e|ci)$/u.test(playwrightDatabaseName)) {
+  throw new Error(
+    `Refusing to run E2E destructive setup against non-test database '${playwrightDatabaseName}'. Set PLAYWRIGHT_DATABASE_URL to an isolated test database.`,
+  );
+}
+
+process.env.DATABASE_URL = playwrightDatabaseUrl;
+process.env.PLAYWRIGHT_DATABASE_URL = playwrightDatabaseUrl;
+process.env.POSTGRES_TEST_PORT = String(selectedTestDbPort);
+process.env.ALLOW_DESTRUCTIVE_DB_TOOLS = "true";
+process.env.CONFIRM_DESTRUCTIVE_DB_NAME = playwrightDatabaseName;
+process.env.NODE_ENV = process.env.NODE_ENV ?? "development";
+process.env.PORT = e2ePort;
+process.env.NEXTAUTH_URL = e2eBaseUrl;
+process.env.AUTH_URL = e2eBaseUrl;
+process.env.NEXT_DIST_DIR = webDistDir;
+process.env.E2E_TEST_MODE = "true";
+writeManagedWebEnv(rootEnv);
+
+try {
+  await cleanupStaleE2eArtifacts();
+  await ensureE2eDatabaseContainer();
+  await run("pnpm", ["--filter", "@capakraken/db", "db:push"], workspaceRoot);
+  await run("pnpm", ["--filter", "@capakraken/db", "db:seed"], workspaceRoot);
+  await run("pnpm", ["--filter", "@capakraken/db", "db:seed:holidays"], workspaceRoot);
+  rmSync(webDistDirPath, { recursive: true, force: true });
+
+  const server = spawn("pnpm", ["exec", "next", "dev", "-p", e2ePort], {
+    cwd: webRoot,
+    env: process.env,
+    stdio: "inherit",
+  });
+
+  for (const signal of ["SIGINT", "SIGTERM"]) {
+    process.on(signal, () => {
+      restoreWebEnv();
+      void cleanupComposeProject();
+      server.kill(signal);
+    });
+  }
+
+  server.on("exit", async (code) => {
+    restoreWebEnv();
+    await cleanupComposeProject();
+    process.exit(code ?? 0);
+  });
+} catch (error) {
+  restoreWebEnv();
+  await cleanupComposeProject();
+  throw error;
+}
diff --git a/apps/web/e2e/timeline.spec.ts b/apps/web/e2e/timeline.spec.ts
index 33eeda7..f317f29 100644
--- a/apps/web/e2e/timeline.spec.ts
+++ b/apps/web/e2e/timeline.spec.ts
@@ -1,4 +1,12 @@
-import { expect, test } from "@playwright/test";
+import { expect, test, type Page } from "@playwright/test";
+
+async function signInAsAdmin(page: Page) {
+  await page.goto("/auth/signin");
+  await page.fill('input[type="email"]', "admin@capakraken.dev");
+  await page.fill('input[type="password"]', "admin123");
+  await page.click('button[type="submit"]');
+  await expect(page).toHaveURL(/\/(dashboard|resources)/);
+}
 
 test.describe("Timeline", () => {
   test.describe.configure({ mode: "serial" });
@@ -7,11 +15,7 @@ test.describe("Timeline", () => {
     await page.addInitScript(() => {
       localStorage.setItem("capakraken_theme", JSON.stringify({ mode: "dark" }));
     });
-    await page.goto("/auth/signin");
-    await page.fill('input[type="email"]', "admin@capakraken.dev");
-    await page.fill('input[type="password"]', "admin123");
-    await page.click('button[type="submit"]');
-    await expect(page).toHaveURL(/\/(dashboard|resources)/);
+    await signInAsAdmin(page);
     await page.goto("/timeline");
   });
 
@@ -87,8 +91,13 @@ test.describe("Timeline", () => {
       .first();
     const allocationPopoverField = page.getByText("Hours / day");
 
-    const resourceHoverTarget = page.locator(".relative.overflow-hidden.touch-none").first();
-    await resourceHoverTarget.hover({ position: { x: 120, y: 20 } });
+    const resourceHoverTarget = page.getByTestId("timeline-resource-row-canvas").first();
+    const resourceHoverBox = await resourceHoverTarget.boundingBox();
+    expect(resourceHoverBox).not.toBeNull();
+    if (!resourceHoverBox) {
+      throw new Error("Expected a resource timeline row canvas to be available");
+    }
+    await page.mouse.move(resourceHoverBox.x + 120, resourceHoverBox.y + 20);
     await expect(heatmapTooltip).toBeVisible();
     await expect
       .poll(async () => {
@@ -109,8 +118,19 @@ test.describe("Timeline", () => {
     await expect(page.getByText(/projects/)).toBeVisible();
     await page.waitForTimeout(500);
 
-    const projectHoverTarget = page.locator(".relative.overflow-hidden.touch-none").first();
-    await projectHoverTarget.hover({ position: { x: 120, y: 20 } });
+    const projectHoverTarget = page.getByTestId("timeline-project-resource-row-canvas").first();
+    const projectHoverBox = await projectHoverTarget.boundingBox();
+    const projectAllocation = page.locator("div[style*='top: 2px'][style*='bottom: 2px']").nth(1);
+    const projectAllocationBox = await projectAllocation.boundingBox();
+    expect(projectHoverBox).not.toBeNull();
+    expect(projectAllocationBox).not.toBeNull();
+    if (!projectHoverBox) {
+      throw new Error("Expected a project timeline row canvas to be available");
+    }
+    if (!projectAllocationBox) {
+      throw new Error("Expected a project allocation block to be available");
+    }
+    await page.mouse.move(projectAllocationBox.x + (projectAllocationBox.width / 2), projectHoverBox.y + 20);
     await expect(heatmapTooltip).toBeVisible();
     await expect
       .poll(async () => {
@@ -118,8 +138,48 @@ test.describe("Timeline", () => {
       })
       .toBe("rgba(3, 7, 18, 0.96)");
 
-    const projectAllocation = page.locator("div[style*='top: 2px'][style*='bottom: 2px']").nth(1);
     await projectAllocation.click({ button: "right" });
     await expect(allocationPopoverField).toBeVisible();
   });
+
+  test("shows resolved holiday overlays in the resource timeline and exposes the holiday name in the tooltip", async ({
+    page,
+  }) => {
+    await page.goto("/timeline?startDate=2026-04-01&days=14&eids=bruce.banner", {
+      waitUntil: "domcontentloaded",
+    });
+
+    const row = page.locator('[data-testid="timeline-resource-row-canvas"][data-resource-eid="bruce.banner"]').first();
+    await expect(row).toBeVisible();
+
+    const holidayBlock = row.locator(
+      '[data-testid="timeline-vacation-block"][data-vacation-type="PUBLIC_HOLIDAY"][data-vacation-note="Karfreitag"]',
+    ).first();
+    await expect(holidayBlock).toBeVisible();
+
+    const rowBox = await row.boundingBox();
+    const holidayBox = await holidayBlock.boundingBox();
+    expect(rowBox).not.toBeNull();
+    expect(holidayBox).not.toBeNull();
+
+    if (!rowBox || !holidayBox) {
+      throw new Error("Expected timeline row and holiday block bounding boxes to be available");
+    }
+
+    await row.hover({
+      position: {
+        x: holidayBox.x - rowBox.x + holidayBox.width / 2,
+        y: holidayBox.y - rowBox.y + Math.min(holidayBox.height / 2, rowBox.height - 4),
+      },
+    });
+
+    const holidayTooltip = page
+      .locator("div.fixed.pointer-events-none.rounded-xl.border.border-amber-700\\/50")
+      .or(page.locator("div.fixed.pointer-events-none.rounded-xl").filter({ hasText: "Karfreitag" }))
+      .first();
+
+    await expect(holidayTooltip).toBeVisible();
+    await expect(holidayTooltip).toContainText("Karfreitag");
+    await expect(holidayTooltip).toContainText("3 April 2026");
+  });
 });
diff --git a/apps/web/e2e/vacations.spec.ts b/apps/web/e2e/vacations.spec.ts
index 3b8910a..1aeef6f 100644
--- a/apps/web/e2e/vacations.spec.ts
+++ b/apps/web/e2e/vacations.spec.ts
@@ -1,13 +1,22 @@
-import { expect, test } from "@playwright/test";
+import { expect, test, type Page } from "@playwright/test";
+
+async function signInAsAdmin(page: Page) {
+  await page.goto("/auth/signin");
+  await page.fill('input[type="email"]', "admin@capakraken.dev");
+  await page.fill('input[type="password"]', "admin123");
+  await page.click('button[type="submit"]');
+  await expect(page).toHaveURL(/\/(dashboard|resources)/);
+}
+
+async function fillDisplayDate(page: Page, label: RegExp, value: string) {
+  const [year, month, day] = value.split("-");
+  await page.getByLabel(label).fill(`${day}/${month}/${year}`);
+}
 
 test.describe("Vacations", () => {
   test.describe("My Vacations (self-service)", () => {
     test.beforeEach(async ({ page }) => {
-      await page.goto("/auth/signin");
-      await page.fill('input[type="email"]', "admin@capakraken.dev");
-      await page.fill('input[type="password"]', "admin123");
-      await page.click('button[type="submit"]');
-      await expect(page).toHaveURL(/\/(dashboard|resources)/);
+      await signInAsAdmin(page);
       await page.goto("/vacations/my");
     });
 
@@ -23,25 +32,19 @@ test.describe("Vacations", () => {
       ).toBeVisible({ timeout: 10000 });
     });
 
-    test("request vacation modal opens", async ({ page }) => {
+    test("request vacation is blocked without linked resource", async ({ page }) => {
       await page.waitForLoadState("networkidle");
       const reqBtn = page.locator("button", { hasText: /Request Vacation/i });
-      await reqBtn.click();
-      // Modal should show vacation form
+      await expect(reqBtn).toBeDisabled();
       await expect(
-        page.locator("text=Request Vacation").or(page.locator("text=Vacation Type")),
+        page.getByText("Your account is not linked to a resource. Please contact an administrator."),
       ).toBeVisible({ timeout: 5000 });
-      await page.keyboard.press("Escape");
     });
   });
 
   test.describe("Vacation Management", () => {
     test.beforeEach(async ({ page }) => {
-      await page.goto("/auth/signin");
-      await page.fill('input[type="email"]', "admin@capakraken.dev");
-      await page.fill('input[type="password"]', "admin123");
-      await page.click('button[type="submit"]');
-      await expect(page).toHaveURL(/\/(dashboard|resources)/);
+      await signInAsAdmin(page);
       await page.goto("/vacations");
     });
 
@@ -62,12 +65,59 @@ test.describe("Vacations", () => {
       ).toBeVisible({ timeout: 10000 });
     });
 
-    test("filter chips are visible on list tab", async ({ page }) => {
+    test("filter controls are visible on list tab", async ({ page }) => {
       await page.waitForLoadState("networkidle");
-      // Status filter options should be visible
+      const filters = page.getByRole("combobox");
+
+      await expect(filters).toHaveCount(3);
+      await expect(filters.nth(0)).toHaveValue("ALL");
+      await expect(filters.nth(1)).toHaveValue("ALL");
+      await expect(filters.nth(2)).toHaveValue("");
+    });
+
+    test("vacation request preview excludes regional public holidays from deducted days", async ({ page }) => {
+      await page.waitForLoadState("networkidle");
+      await page.getByRole("button", { name: /request vacation/i }).click();
+
+      await expect(page.getByLabel(/^type/i).locator("option", { hasText: /Public Holiday/i })).toHaveCount(0);
+      await page.getByLabel(/resource/i).selectOption({ label: "Bruce Banner (bruce.banner)" });
+      await page.getByLabel(/^type/i).selectOption("ANNUAL");
+      await fillDisplayDate(page, /start date/i, "2026-01-06");
+      await fillDisplayDate(page, /end date/i, "2026-01-06");
+
+      await expect(page.getByTestId("vacation-preview-card")).toBeVisible({ timeout: 10000 });
+      await expect(page.getByTestId("vacation-preview-requested-days")).toHaveText("1");
+      await expect(page.getByTestId("vacation-preview-effective-days")).toHaveText("0");
+      await expect(page.getByTestId("vacation-preview-deducted-days")).toHaveText("0");
+      await expect(page.getByTestId("vacation-preview-public-holidays")).toContainText("2026-01-06");
+      await expect(page.getByTestId("vacation-preview-holiday-basis")).toContainText("Germany");
+      await expect(page.getByTestId("vacation-preview-holiday-sources")).toContainText("Holiday Calendar");
+    });
+  });
+
+  test.describe("Admin Holiday Calendar", () => {
+    test.beforeEach(async ({ page }) => {
+      await signInAsAdmin(page);
+      await page.goto("/admin/vacations");
+    });
+
+    test("seeded holiday calendars can be selected and previewed", async ({ page }) => {
+      await expect(page.getByTestId("holiday-calendar-editor")).toBeVisible({ timeout: 10000 });
+      const germanyCalendarRow = page
+        .getByTestId(/holiday-calendar-row-/)
+        .filter({ hasText: "Referenzfeiertage Deutschland 2026-2027" })
+        .first();
+
+      await expect(germanyCalendarRow).toBeVisible({ timeout: 10000 });
+      await germanyCalendarRow.click();
+
       await expect(
-        page.locator("button", { hasText: /All|Pending|Approved/i }).first(),
+        page.getByRole("heading", { name: "Referenzfeiertage Deutschland 2026-2027" }),
       ).toBeVisible({ timeout: 10000 });
+
+      await page.getByTestId("holiday-preview-year-input").fill("2026");
+      await expect(page.getByTestId("holiday-preview-table")).toContainText("2026-01-01");
+      await expect(page.getByTestId("holiday-preview-table")).toContainText("Neujahr");
     });
   });
 });
diff --git a/apps/web/next-env.d.ts b/apps/web/next-env.d.ts
index 830fb59..2781e99 100644
--- a/apps/web/next-env.d.ts
+++ b/apps/web/next-env.d.ts
@@ -1,6 +1,6 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-/// <reference path="./.next/types/routes.d.ts" />
+/// <reference path="./.next-e2e/types/routes.d.ts" />
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/api-reference/config/typescript for more information.
diff --git a/apps/web/next.config.ts b/apps/web/next.config.ts
index 944bfbf..b3e23db 100644
--- a/apps/web/next.config.ts
+++ b/apps/web/next.config.ts
@@ -2,7 +2,9 @@ import path from "path";
 import type { NextConfig } from "next";
 
 const nextConfig: NextConfig = {
+  distDir: process.env.NEXT_DIST_DIR ?? ".next",
   output: "standalone",
+  outputFileTracingRoot: path.resolve(__dirname, "../.."),
   devIndicators: false,
   experimental: {
     optimizePackageImports: ["recharts", "date-fns"],
diff --git a/apps/web/playwright.config.ts b/apps/web/playwright.config.ts
index c1ba0da..cd6eaa3 100644
--- a/apps/web/playwright.config.ts
+++ b/apps/web/playwright.config.ts
@@ -1,14 +1,17 @@
 import { defineConfig, devices } from "@playwright/test";
 
+const e2ePort = process.env["PLAYWRIGHT_TEST_PORT"] ?? "3110";
+const e2eBaseUrl = process.env["PLAYWRIGHT_TEST_BASE_URL"] ?? `http://localhost:${e2ePort}`;
+
 export default defineConfig({
   testDir: "./e2e",
-  fullyParallel: true,
+  fullyParallel: false,
   forbidOnly: !!process.env["CI"],
   retries: process.env["CI"] ? 2 : 0,
-  ...(process.env["CI"] ? { workers: 1 } : {}),
+  workers: 1,
   reporter: "html",
   use: {
-    baseURL: "http://localhost:3100",
+    baseURL: e2eBaseUrl,
     trace: "on-first-retry",
   },
   projects: [
@@ -18,9 +21,9 @@ export default defineConfig({
     },
   ],
   webServer: {
-    command: "pnpm dev",
-    url: "http://localhost:3100",
-    reuseExistingServer: !process.env["CI"],
-    timeout: 120000,
+    command: "node ./e2e/test-server.mjs",
+    url: e2eBaseUrl,
+    reuseExistingServer: false,
+    timeout: 180000,
   },
 });
diff --git a/apps/web/src/app/(app)/admin/vacations/page.tsx b/apps/web/src/app/(app)/admin/vacations/page.tsx
index 8ddf031..7c0e8d8 100644
--- a/apps/web/src/app/(app)/admin/vacations/page.tsx
+++ b/apps/web/src/app/(app)/admin/vacations/page.tsx
@@ -1,3 +1,4 @@
+import { HolidayCalendarEditor } from "~/components/vacations/HolidayCalendarEditor.js";
 import { PublicHolidayBatch } from "~/components/vacations/PublicHolidayBatch.js";
 import { EntitlementManager } from "~/components/vacations/EntitlementManager.js";
 
@@ -8,10 +9,40 @@ export default function AdminVacationsPage() {
     <div className="p-6 max-w-5xl mx-auto space-y-6">
       <div>
         <h1 className="text-2xl font-bold text-gray-900">Vacation Management</h1>
-        <p className="text-sm text-gray-500 mt-1">Manage public holidays, entitlements, and year summaries</p>
+        <p className="mt-1 text-sm text-gray-500">
+          Verwalte Feiertagskalender pro Land, Bundesland und Stadt sowie Entitlements und Fallback-Importe.
+        </p>
       </div>
-      <PublicHolidayBatch />
-      <EntitlementManager />
+
+      <section className="space-y-3">
+        <div>
+          <h2 className="text-sm font-semibold uppercase tracking-wide text-gray-500">Holiday Calendars</h2>
+          <p className="text-sm text-gray-600">
+            Fachliche Quelle fuer regionale Feiertage. Diese Kalender werden fuer Urlaubszaehlung, Timeline-Overlay und Assistant-Abfragen verwendet.
+          </p>
+        </div>
+        <HolidayCalendarEditor />
+      </section>
+
+      <section className="space-y-3">
+        <div>
+          <h2 className="text-sm font-semibold uppercase tracking-wide text-gray-500">Legacy Batch Import</h2>
+          <p className="text-sm text-gray-600">
+            Nur als Fallback fuer bestaende Prozesse. Bevorzugt sollen Feiertage ueber die Kalenderlogik und nicht als statische Urlaubseintraege gepflegt werden.
+          </p>
+        </div>
+        <PublicHolidayBatch />
+      </section>
+
+      <section className="space-y-3">
+        <div>
+          <h2 className="text-sm font-semibold uppercase tracking-wide text-gray-500">Entitlements</h2>
+          <p className="text-sm text-gray-600">
+            Jahresansprueche und Resttage im gleichen Kontext pruefen, nachdem Feiertage regional aufgeloest wurden.
+          </p>
+        </div>
+        <EntitlementManager />
+      </section>
     </div>
   );
 }
diff --git a/apps/web/src/app/(app)/resources/ResourcesClient.tsx b/apps/web/src/app/(app)/resources/ResourcesClient.tsx
index 35edc0d..84ef356 100644
--- a/apps/web/src/app/(app)/resources/ResourcesClient.tsx
+++ b/apps/web/src/app/(app)/resources/ResourcesClient.tsx
@@ -33,6 +33,7 @@ import { usePermissions } from "~/hooks/usePermissions.js";
 import { useColumnConfig } from "~/hooks/useColumnConfig.js";
 import { useViewPrefs } from "~/hooks/useViewPrefs.js";
 import { useRowOrder } from "~/hooks/useRowOrder.js";
+import { useAnchoredOverlay } from "~/hooks/useAnchoredOverlay.js";
 import { DraggableTableRow } from "~/components/ui/DraggableTableRow.js";
 
 type ModalState =
@@ -85,68 +86,22 @@ function FilterDropdown({
   tooltipContent?: ReactNode;
 }) {
   const [isOpen, setIsOpen] = useState(false);
-  const dropdownRef = useRef<HTMLDivElement | null>(null);
-  const panelRef = useRef<HTMLDivElement | null>(null);
-  const [panelPosition, setPanelPosition] = useState({ top: 0, left: 0, minWidth: 0 });
-
-  const updatePanelPosition = useCallback(() => {
-    const trigger = dropdownRef.current;
-    if (!trigger) return;
-
-    const rect = trigger.getBoundingClientRect();
-    const panelWidth = panelRef.current?.offsetWidth ?? rect.width;
-    const viewportPadding = 16;
-    const maxLeft = Math.max(viewportPadding, window.innerWidth - panelWidth - viewportPadding);
-
-    setPanelPosition({
-      top: rect.bottom + 8,
-      left: Math.min(Math.max(rect.left, viewportPadding), maxLeft),
-      minWidth: rect.width,
-    });
-  }, []);
-
-  useEffect(() => {
-    function handlePointerDown(event: MouseEvent) {
-      const target = event.target as Node;
-      if (dropdownRef.current?.contains(target) || panelRef.current?.contains(target)) {
-        return;
-      }
-      setIsOpen(false);
-    }
-
-    document.addEventListener("mousedown", handlePointerDown);
-    return () => document.removeEventListener("mousedown", handlePointerDown);
-  }, []);
-
-  useEffect(() => {
-    if (!isOpen) return;
-
-    updatePanelPosition();
-    const rafId = window.requestAnimationFrame(updatePanelPosition);
-    const handleEscape = (event: KeyboardEvent) => {
-      if (event.key === "Escape") {
-        setIsOpen(false);
-      }
-    };
-
-    window.addEventListener("resize", updatePanelPosition);
-    window.addEventListener("scroll", updatePanelPosition, true);
-    window.addEventListener("keydown", handleEscape);
-
-    return () => {
-      window.cancelAnimationFrame(rafId);
-      window.removeEventListener("resize", updatePanelPosition);
-      window.removeEventListener("scroll", updatePanelPosition, true);
-      window.removeEventListener("keydown", handleEscape);
-    };
-  }, [isOpen, updatePanelPosition]);
+  const { triggerRef, panelRef, position, handleOpenChange } = useAnchoredOverlay<HTMLDivElement>({
+    open: isOpen,
+    onClose: () => setIsOpen(false),
+    matchTriggerWidth: true,
+  });
 
   return (
-    <div ref={dropdownRef} className="relative">
+    <div ref={triggerRef} className="relative">
       <div className="flex items-center gap-2">
         <button
           type="button"
-          onClick={() => setIsOpen((current) => !current)}
+          onClick={() => {
+            const nextOpen = !isOpen;
+            handleOpenChange(nextOpen);
+            setIsOpen(nextOpen);
+          }}
           className={`inline-flex items-center justify-between gap-3 rounded-xl border border-gray-300 bg-white px-3 py-2 text-sm text-gray-700 shadow-sm transition hover:border-gray-400 hover:bg-gray-50 dark:border-gray-600 dark:bg-gray-900 dark:text-gray-200 dark:hover:bg-gray-800 ${buttonClassName}`}
         >
           <span className="text-left">{label}</span>
@@ -160,9 +115,9 @@ function FilterDropdown({
             ref={panelRef}
             style={{
               position: "fixed",
-              top: panelPosition.top,
-              left: panelPosition.left,
-              minWidth: panelPosition.minWidth,
+              top: position.top,
+              left: position.left,
+              minWidth: position.minWidth,
             }}
             className={`z-[9998] rounded-2xl border border-gray-200 bg-white p-3 shadow-xl dark:border-gray-700 dark:bg-gray-900 ${widthClassName}`}
           >
diff --git a/apps/web/src/app/global-error.tsx b/apps/web/src/app/global-error.tsx
index f737845..69c9f3f 100644
--- a/apps/web/src/app/global-error.tsx
+++ b/apps/web/src/app/global-error.tsx
@@ -1,6 +1,5 @@
 "use client";
 
-import * as Sentry from "@sentry/nextjs";
 import { useEffect } from "react";
 
 export default function GlobalError({
@@ -11,7 +10,7 @@ export default function GlobalError({
   reset: () => void;
 }) {
   useEffect(() => {
-    Sentry.captureException(error);
+    console.error(error);
   }, [error]);
 
   return (
diff --git a/apps/web/src/components/admin/SystemRolesClient.tsx b/apps/web/src/components/admin/SystemRolesClient.tsx
index 7098681..d97568c 100644
--- a/apps/web/src/components/admin/SystemRolesClient.tsx
+++ b/apps/web/src/components/admin/SystemRolesClient.tsx
@@ -9,6 +9,7 @@ const ALL_PERMISSION_KEYS = Object.values(PermissionKey);
 
 const PERMISSION_LABELS: Record<string, string> = {
   viewCosts: "View Costs",
+  useAssistantAdvancedTools: "Assistant Advanced Tools",
   exportData: "Export Data",
   importData: "Import Data",
   approveVacations: "Approve Vacations",
@@ -24,6 +25,7 @@ const PERMISSION_LABELS: Record<string, string> = {
 
 const PERMISSION_DESCRIPTIONS: Record<string, string> = {
   viewCosts: "Access to cost data, budget views, and financial reports",
+  useAssistantAdvancedTools: "Unlocks advanced AI assistant workflows for complex cross-entity analyses",
   exportData: "Export data to Excel, CSV, or PDF formats",
   importData: "Import data from external sources (Dispo, Excel)",
   approveVacations: "Approve or reject vacation requests",
@@ -97,6 +99,8 @@ export function SystemRolesClient() {
     staleTime: 10_000,
   });
 
+  // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+  // @ts-ignore TS2589: tRPC infers union type too deeply for the role config update payload
   const updateMutation = trpc.systemRoleConfig.update.useMutation({
     onSuccess: async () => {
       await utils.systemRoleConfig.list.invalidate();
diff --git a/apps/web/src/components/admin/UsersClient.tsx b/apps/web/src/components/admin/UsersClient.tsx
index 042a19d..d0a7f84 100644
--- a/apps/web/src/components/admin/UsersClient.tsx
+++ b/apps/web/src/components/admin/UsersClient.tsx
@@ -15,6 +15,7 @@ const ALL_PERMISSION_KEYS = Object.values(PermissionKey);
 
 const PERMISSION_LABELS: Record<string, string> = {
   viewCosts: "View Costs",
+  useAssistantAdvancedTools: "Assistant Advanced Tools",
   exportData: "Export Data",
   importData: "Import Data",
   approveVacations: "Approve Vacations",
@@ -25,6 +26,7 @@ const PERMISSION_LABELS: Record<string, string> = {
   manageAllocations: "Manage Allocations",
   manageRoles: "Manage Roles",
   manageUsers: "Manage Users",
+  viewScores: "View Scores",
 };
 
 const SYSTEM_ROLE_LABELS: Record<SystemRole, string> = {
diff --git a/apps/web/src/components/analytics/ComputationGraphClient.tsx b/apps/web/src/components/analytics/ComputationGraphClient.tsx
index 726fcb1..8388fc3 100644
--- a/apps/web/src/components/analytics/ComputationGraphClient.tsx
+++ b/apps/web/src/components/analytics/ComputationGraphClient.tsx
@@ -11,6 +11,50 @@ import ComputationGraph3D from "~/components/analytics/ComputationGraph3D";
 
 type Dimension = "2d" | "3d";
 
+interface ResourceHolidayMeta {
+  date: string;
+  name: string;
+  scope: string;
+  calendarName: string | null;
+}
+
+interface ResourceFactorMeta {
+  weeklyAvailability?: Record<string, number>;
+  baseWorkingDays?: number;
+  effectiveWorkingDays?: number;
+  baseAvailableHours?: number;
+  effectiveAvailableHours?: number;
+  publicHolidayCount?: number;
+  publicHolidayWorkdayCount?: number;
+  publicHolidayHoursDeduction?: number;
+  absenceDayCount?: number;
+  absenceHoursDeduction?: number;
+  chargeableHours?: number;
+  utilizationPct?: number;
+}
+
+interface ResourceGraphMeta {
+  resourceName?: string;
+  resourceEid?: string;
+  month?: string;
+  countryCode?: string | null;
+  countryName?: string | null;
+  federalState?: string | null;
+  metroCityName?: string | null;
+  resolvedHolidays?: ResourceHolidayMeta[];
+  factors?: ResourceFactorMeta;
+}
+
+function formatNumber(value: number | undefined, digits = 1): string {
+  if (typeof value !== "number" || Number.isNaN(value)) {
+    return "—";
+  }
+  return new Intl.NumberFormat("de-DE", {
+    minimumFractionDigits: digits,
+    maximumFractionDigits: digits,
+  }).format(value);
+}
+
 export default function ComputationGraphClient() {
   const state = useComputationGraphData();
   const [dimension, setDimension] = useState<Dimension>("2d");
@@ -24,10 +68,34 @@ export default function ComputationGraphClient() {
     isLoading,
     activeDomains,
     graphData,
+    rawData,
     highlightedNodes, setHighlightedNodes,
     domainFilter, toggleDomain,
   } = state;
 
+  const resourceMeta = viewMode === "resource"
+    ? (rawData?.meta as ResourceGraphMeta | undefined)
+    : undefined;
+  const resourceFactors = resourceMeta?.factors;
+  const weeklyAvailabilityEntries: Array<[string, number | undefined]> = resourceFactors?.weeklyAvailability
+    ? [
+      ["Mo", resourceFactors.weeklyAvailability.monday],
+      ["Di", resourceFactors.weeklyAvailability.tuesday],
+      ["Mi", resourceFactors.weeklyAvailability.wednesday],
+      ["Do", resourceFactors.weeklyAvailability.thursday],
+      ["Fr", resourceFactors.weeklyAvailability.friday],
+      ["Sa", resourceFactors.weeklyAvailability.saturday],
+      ["So", resourceFactors.weeklyAvailability.sunday],
+    ]
+    : [];
+  const weeklyAvailability = resourceFactors?.weeklyAvailability
+    ? weeklyAvailabilityEntries
+      .filter((entry): entry is [string, number] => typeof entry[1] === "number" && entry[1] > 0)
+      .map(([label, hours]) => `${label} ${formatNumber(hours, 1)}h`)
+      .join(" · ")
+    : "—";
+  const topHolidays = resourceMeta?.resolvedHolidays?.slice(0, 6) ?? [];
+
   return (
     <div className="flex h-[calc(100vh-4rem)] flex-col">
       {/* ── Header Bar ── */}
@@ -173,6 +241,102 @@ export default function ComputationGraphClient() {
             <ComputationGraph3D state={state} />
           )}
         </div>
+
+        {viewMode === "resource" && resourceMeta && (
+          <aside className="w-[24rem] overflow-y-auto border-l border-zinc-200 bg-white/90 p-4 dark:border-zinc-700 dark:bg-zinc-950/90">
+            <div className="space-y-4">
+              <section className="rounded-xl border border-zinc-200 bg-zinc-50 p-4 dark:border-zinc-800 dark:bg-zinc-900">
+                <div className="text-xs font-semibold uppercase tracking-wide text-zinc-500">Bezugsgroessen</div>
+                <div className="mt-2 text-lg font-semibold text-zinc-900 dark:text-zinc-100">
+                  {resourceMeta.resourceName ?? "Resource"}
+                </div>
+                <div className="text-sm text-zinc-500">{resourceMeta.resourceEid ?? "—"} · {resourceMeta.month ?? month}</div>
+                <div className="mt-3 grid grid-cols-1 gap-2 text-sm text-zinc-700 dark:text-zinc-300">
+                  <div className="rounded-lg bg-white px-3 py-2 dark:bg-zinc-950">
+                    <div className="text-xs uppercase text-zinc-500">Land</div>
+                    <div>{resourceMeta.countryName ?? resourceMeta.countryCode ?? "—"}{resourceMeta.countryCode ? ` (${resourceMeta.countryCode})` : ""}</div>
+                  </div>
+                  <div className="rounded-lg bg-white px-3 py-2 dark:bg-zinc-950">
+                    <div className="text-xs uppercase text-zinc-500">Bundesland / Region</div>
+                    <div>{resourceMeta.federalState ?? "—"}</div>
+                  </div>
+                  <div className="rounded-lg bg-white px-3 py-2 dark:bg-zinc-950">
+                    <div className="text-xs uppercase text-zinc-500">Ort / Metro</div>
+                    <div>{resourceMeta.metroCityName ?? "—"}</div>
+                  </div>
+                  <div className="rounded-lg bg-white px-3 py-2 dark:bg-zinc-950">
+                    <div className="text-xs uppercase text-zinc-500">Wochenverfuegbarkeit</div>
+                    <div>{weeklyAvailability}</div>
+                  </div>
+                </div>
+              </section>
+
+              <section className="rounded-xl border border-zinc-200 bg-zinc-50 p-4 dark:border-zinc-800 dark:bg-zinc-900">
+                <div className="flex items-center justify-between">
+                  <div className="text-xs font-semibold uppercase tracking-wide text-zinc-500">Feiertagsbasis</div>
+                  <div className="text-xs text-zinc-500">
+                    {resourceFactors?.publicHolidayCount ?? 0} Feiertage, {resourceFactors?.publicHolidayWorkdayCount ?? 0} wirksam
+                  </div>
+                </div>
+                <div className="mt-3 space-y-2">
+                  {topHolidays.length > 0 ? topHolidays.map((holiday) => (
+                    <div
+                      key={`${holiday.date}-${holiday.name}`}
+                      className="rounded-lg border border-zinc-200 bg-white px-3 py-2 text-sm dark:border-zinc-800 dark:bg-zinc-950"
+                    >
+                      <div className="font-medium text-zinc-900 dark:text-zinc-100">{holiday.name}</div>
+                      <div className="text-xs text-zinc-500">
+                        {holiday.date} · {holiday.scope} · {holiday.calendarName ?? "Kalender"}
+                      </div>
+                    </div>
+                  )) : (
+                    <div className="rounded-lg border border-dashed border-zinc-200 px-3 py-2 text-sm text-zinc-500 dark:border-zinc-800">
+                      Keine aufgeloesten Feiertage im gewaehlten Monat.
+                    </div>
+                  )}
+                </div>
+              </section>
+
+              <section className="rounded-xl border border-zinc-200 bg-zinc-50 p-4 dark:border-zinc-800 dark:bg-zinc-900">
+                <div className="text-xs font-semibold uppercase tracking-wide text-zinc-500">Herleitung</div>
+                <div className="mt-3 space-y-2">
+                  <div className="rounded-lg bg-white px-3 py-2 text-sm dark:bg-zinc-950">
+                    <div className="text-xs uppercase text-zinc-500">SAH Formel</div>
+                    <div className="font-medium text-zinc-900 dark:text-zinc-100">
+                      {formatNumber(resourceFactors?.baseAvailableHours)}h - {formatNumber(resourceFactors?.publicHolidayHoursDeduction)}h - {formatNumber(resourceFactors?.absenceHoursDeduction)}h = {formatNumber(resourceFactors?.effectiveAvailableHours)}h
+                    </div>
+                  </div>
+                  <div className="grid grid-cols-2 gap-2 text-sm">
+                    <div className="rounded-lg bg-white px-3 py-2 dark:bg-zinc-950">
+                      <div className="text-xs uppercase text-zinc-500">Basistage</div>
+                      <div>{formatNumber(resourceFactors?.baseWorkingDays, 0)}</div>
+                    </div>
+                    <div className="rounded-lg bg-white px-3 py-2 dark:bg-zinc-950">
+                      <div className="text-xs uppercase text-zinc-500">Effektive Tage</div>
+                      <div>{formatNumber(resourceFactors?.effectiveWorkingDays, 0)}</div>
+                    </div>
+                    <div className="rounded-lg bg-white px-3 py-2 dark:bg-zinc-950">
+                      <div className="text-xs uppercase text-zinc-500">Feiertagsabzug</div>
+                      <div>{formatNumber(resourceFactors?.publicHolidayHoursDeduction)}h</div>
+                    </div>
+                    <div className="rounded-lg bg-white px-3 py-2 dark:bg-zinc-950">
+                      <div className="text-xs uppercase text-zinc-500">Abwesenheitsabzug</div>
+                      <div>{formatNumber(resourceFactors?.absenceHoursDeduction)}h</div>
+                    </div>
+                    <div className="rounded-lg bg-white px-3 py-2 dark:bg-zinc-950">
+                      <div className="text-xs uppercase text-zinc-500">Chargeable Hours</div>
+                      <div>{formatNumber(resourceFactors?.chargeableHours)}h</div>
+                    </div>
+                    <div className="rounded-lg bg-white px-3 py-2 dark:bg-zinc-950">
+                      <div className="text-xs uppercase text-zinc-500">Auslastung</div>
+                      <div>{formatNumber(resourceFactors?.utilizationPct)}%</div>
+                    </div>
+                  </div>
+                </div>
+              </section>
+            </div>
+          </aside>
+        )}
       </div>
     </div>
   );
diff --git a/apps/web/src/components/analytics/computation-graph/useComputationGraphData.ts b/apps/web/src/components/analytics/computation-graph/useComputationGraphData.ts
index de3d088..a5329a4 100644
--- a/apps/web/src/components/analytics/computation-graph/useComputationGraphData.ts
+++ b/apps/web/src/components/analytics/computation-graph/useComputationGraphData.ts
@@ -6,12 +6,19 @@ import {
   RESOURCE_VIEW_DOMAINS,
   PROJECT_VIEW_DOMAINS,
   type Domain,
+  type GraphLink,
   type GraphNode,
 } from "./domain-colors";
 import { buildForceGraphData, getConnectedNodeIds, type PositionedNode, type ForceGraphData } from "./graph-data";
 
 export type ViewMode = "resource" | "project";
 
+export interface ComputationGraphResponse {
+  nodes: GraphNode[];
+  links: GraphLink[];
+  meta?: Record<string, unknown>;
+}
+
 export interface ComputationGraphState {
   viewMode: ViewMode;
   setViewMode: (m: ViewMode) => void;
@@ -26,6 +33,7 @@ export interface ComputationGraphState {
   isLoading: boolean;
   activeDomains: Domain[];
   graphData: ForceGraphData;
+  rawData: ComputationGraphResponse | null;
   highlightedNodes: Set<string> | null;
   setHighlightedNodes: (s: Set<string> | null) => void;
   hoveredNode: PositionedNode | null;
@@ -144,6 +152,7 @@ export function useComputationGraphData(): ComputationGraphState {
     isLoading,
     activeDomains,
     graphData,
+    rawData: (rawData as ComputationGraphResponse | undefined) ?? null,
     highlightedNodes,
     setHighlightedNodes,
     hoveredNode,
diff --git a/apps/web/src/components/assistant/ChatMessage.tsx b/apps/web/src/components/assistant/ChatMessage.tsx
index e1e699e..f3b3159 100644
--- a/apps/web/src/components/assistant/ChatMessage.tsx
+++ b/apps/web/src/components/assistant/ChatMessage.tsx
@@ -1,16 +1,33 @@
 "use client";
 
 import { useMemo } from "react";
+import { clsx } from "clsx";
+
+interface AssistantInsightMetric {
+  label: string;
+  value: string;
+  tone?: "neutral" | "good" | "warn" | "danger" | "info";
+}
+
+interface AssistantInsightSection {
+  title: string;
+  metrics: AssistantInsightMetric[];
+}
+
+interface AssistantInsight {
+  kind: "chargeability" | "resource_match" | "holiday_region" | "resource_holidays";
+  title: string;
+  subtitle?: string;
+  metrics: AssistantInsightMetric[];
+  sections?: AssistantInsightSection[];
+}
 
 interface ChatMessageProps {
   role: "user" | "assistant";
   content: string;
+  insights?: AssistantInsight[];
 }
 
-/**
- * Lightweight inline markdown renderer — handles bold, italic, code,
- * bullet lists, and numbered lists without a full markdown library.
- */
 function renderMarkdown(text: string) {
   const lines = text.split("\n");
   const elements: React.ReactNode[] = [];
@@ -21,7 +38,7 @@ function renderMarkdown(text: string) {
     if (listItems.length > 0 && listType) {
       const Tag = listType;
       elements.push(
-        <Tag key={`list-${elements.length}`} className={listType === "ul" ? "list-disc pl-4 my-1 space-y-0.5" : "list-decimal pl-4 my-1 space-y-0.5"}>
+        <Tag key={`list-${elements.length}`} className={listType === "ul" ? "my-1 list-disc space-y-0.5 pl-4" : "my-1 list-decimal space-y-0.5 pl-4"}>
           {listItems}
         </Tag>,
       );
@@ -31,7 +48,6 @@ function renderMarkdown(text: string) {
   };
 
   for (const [i, line] of lines.entries()) {
-    // Bullet list: "- item" or "* item"
     const bulletMatch = line.match(/^[\s]*[-*]\s+(.*)/);
     if (bulletMatch?.[1]) {
       if (listType !== "ul") flushList();
@@ -40,7 +56,6 @@ function renderMarkdown(text: string) {
       continue;
     }
 
-    // Numbered list: "1. item"
     const numMatch = line.match(/^[\s]*\d+\.\s+(.*)/);
     if (numMatch?.[1]) {
       if (listType !== "ol") flushList();
@@ -49,54 +64,46 @@ function renderMarkdown(text: string) {
       continue;
     }
 
-    // Not a list item — flush any pending list
     flushList();
 
-    // Empty line → spacing
     if (line.trim() === "") {
       elements.push(<div key={`br-${i}`} className="h-2" />);
       continue;
     }
 
-    // Regular paragraph
     elements.push(<p key={`p-${i}`} className="my-0">{inlineFormat(line)}</p>);
   }
+
   flushList();
   return elements;
 }
 
-/** Parse inline formatting: **bold**, *italic*, `code` */
 function inlineFormat(text: string): React.ReactNode {
-  // Split by inline patterns, preserving delimiters
   const parts: React.ReactNode[] = [];
-  // Regex: **bold**, *italic*, `code`
   const regex = /(\*\*(.+?)\*\*|\*(.+?)\*|`(.+?)`)/g;
   let lastIndex = 0;
   let match: RegExpExecArray | null;
 
   while ((match = regex.exec(text)) !== null) {
-    // Text before this match
     if (match.index > lastIndex) {
       parts.push(text.slice(lastIndex, match.index));
     }
+
     if (match[2]) {
-      // **bold**
       parts.push(<strong key={`b-${match.index}`} className="font-semibold">{match[2]}</strong>);
     } else if (match[3]) {
-      // *italic*
       parts.push(<em key={`i-${match.index}`}>{match[3]}</em>);
     } else if (match[4]) {
-      // `code`
       parts.push(
         <code key={`c-${match.index}`} className="rounded bg-black/10 px-1 py-0.5 text-xs font-mono dark:bg-white/10">
           {match[4]}
         </code>,
       );
     }
+
     lastIndex = match.index + match[0].length;
   }
 
-  // Remaining text
   if (lastIndex < text.length) {
     parts.push(text.slice(lastIndex));
   }
@@ -104,7 +111,72 @@ function inlineFormat(text: string): React.ReactNode {
   return parts.length === 1 ? parts[0] : <>{parts}</>;
 }
 
-export function ChatMessage({ role, content }: ChatMessageProps) {
+function metricToneClasses(tone: AssistantInsightMetric["tone"] | undefined): string {
+  switch (tone) {
+    case "good":
+      return "border-emerald-200 bg-emerald-50 text-emerald-700 dark:border-emerald-900/60 dark:bg-emerald-950/30 dark:text-emerald-300";
+    case "warn":
+      return "border-amber-200 bg-amber-50 text-amber-700 dark:border-amber-900/60 dark:bg-amber-950/30 dark:text-amber-300";
+    case "danger":
+      return "border-red-200 bg-red-50 text-red-700 dark:border-red-900/60 dark:bg-red-950/30 dark:text-red-300";
+    case "info":
+      return "border-sky-200 bg-sky-50 text-sky-700 dark:border-sky-900/60 dark:bg-sky-950/30 dark:text-sky-300";
+    default:
+      return "border-gray-200 bg-white text-gray-700 dark:border-slate-700 dark:bg-slate-900/60 dark:text-gray-200";
+  }
+}
+
+function InsightMetric({ metric }: { metric: AssistantInsightMetric }) {
+  return (
+    <div className={clsx("rounded-xl border px-2.5 py-2", metricToneClasses(metric.tone))}>
+      <div className="text-[10px] font-medium uppercase tracking-[0.08em] opacity-70">{metric.label}</div>
+      <div className="mt-1 text-sm font-semibold leading-tight">{metric.value}</div>
+    </div>
+  );
+}
+
+function InsightCard({ insight }: { insight: AssistantInsight }) {
+  return (
+    <div className="rounded-2xl border border-slate-200 bg-white/90 p-3 shadow-sm dark:border-slate-700 dark:bg-slate-900/85">
+      <div className="flex items-start justify-between gap-3">
+        <div className="min-w-0">
+          <div className="truncate text-sm font-semibold text-gray-900 dark:text-gray-100">{insight.title}</div>
+          {insight.subtitle && (
+            <div className="mt-0.5 text-[11px] text-gray-500 dark:text-gray-400">{insight.subtitle}</div>
+          )}
+        </div>
+        <span className="rounded-full border border-slate-200 bg-slate-50 px-2 py-0.5 text-[10px] font-medium uppercase tracking-[0.08em] text-slate-600 dark:border-slate-700 dark:bg-slate-800 dark:text-slate-300">
+          {insight.kind.replace("_", " ")}
+        </span>
+      </div>
+
+      <div className="mt-3 grid grid-cols-2 gap-2">
+        {insight.metrics.map((metric, index) => (
+          <InsightMetric key={`${insight.kind}-${metric.label}-${index}`} metric={metric} />
+        ))}
+      </div>
+
+      {insight.sections && insight.sections.length > 0 && (
+        <div className="mt-3 space-y-2">
+          {insight.sections.map((section, sectionIndex) => (
+            <div key={`${insight.kind}-${section.title}-${sectionIndex}`} className="rounded-xl border border-dashed border-slate-200 bg-slate-50/70 p-2.5 dark:border-slate-700 dark:bg-slate-800/60">
+              <div className="mb-2 text-[10px] font-semibold uppercase tracking-[0.08em] text-slate-500 dark:text-slate-400">
+                {section.title}
+              </div>
+              <div className="grid grid-cols-2 gap-2">
+                {section.metrics.map((metric, metricIndex) => (
+                  <InsightMetric key={`${section.title}-${metric.label}-${metricIndex}`} metric={metric} />
+                ))}
+              </div>
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}
+
+export function ChatMessage({ role, content, insights }: ChatMessageProps) {
   const isUser = role === "user";
   const rendered = useMemo(() => (isUser ? null : renderMarkdown(content)), [isUser, content]);
 
@@ -121,12 +193,19 @@ export function ChatMessage({ role, content }: ChatMessageProps) {
           <span className="whitespace-pre-wrap break-words">{content}</span>
         ) : (
           <>
-            <span className="inline-flex items-center gap-1 px-1.5 py-0.5 text-[10px] font-medium rounded bg-violet-100 text-violet-700 dark:bg-violet-900/30 dark:text-violet-300 mb-1.5">
-              <svg className="w-3 h-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+            <span className="mb-1.5 inline-flex items-center gap-1 rounded bg-violet-100 px-1.5 py-0.5 text-[10px] font-medium text-violet-700 dark:bg-violet-900/30 dark:text-violet-300">
+              <svg className="h-3 w-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                 <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9.663 17h4.673M12 3v1m6.364 1.636l-.707.707M21 12h-1M4 12H3m3.343-5.657l-.707-.707m2.828 9.9a5 5 0 117.072 0l-.548.547A3.374 3.374 0 0014 18.469V19a2 2 0 11-4 0v-.531c0-.895-.356-1.754-.988-2.386l-.548-.547z" />
               </svg>
               AI Generated
             </span>
+            {insights && insights.length > 0 && (
+              <div className="mb-2 space-y-2">
+                {insights.map((insight, index) => (
+                  <InsightCard key={`${insight.kind}-${insight.title}-${index}`} insight={insight} />
+                ))}
+              </div>
+            )}
             <div className="space-y-0.5 break-words">{rendered}</div>
           </>
         )}
diff --git a/apps/web/src/components/assistant/ChatPanel.tsx b/apps/web/src/components/assistant/ChatPanel.tsx
index 33ce83f..0931c99 100644
--- a/apps/web/src/components/assistant/ChatPanel.tsx
+++ b/apps/web/src/components/assistant/ChatPanel.tsx
@@ -38,6 +38,26 @@ function resolvePageContext(pathname: string): string {
 interface Message {
   role: "user" | "assistant";
   content: string;
+  insights?: AssistantInsight[];
+}
+
+interface AssistantInsightMetric {
+  label: string;
+  value: string;
+  tone?: "neutral" | "good" | "warn" | "danger" | "info";
+}
+
+interface AssistantInsightSection {
+  title: string;
+  metrics: AssistantInsightMetric[];
+}
+
+interface AssistantInsight {
+  kind: "chargeability" | "resource_match" | "holiday_region" | "resource_holidays";
+  title: string;
+  subtitle?: string;
+  metrics: AssistantInsightMetric[];
+  sections?: AssistantInsightSection[];
 }
 
 const STORAGE_KEY = "capakraken-chat-messages";
@@ -47,7 +67,23 @@ function loadPersistedMessages(): Message[] {
   if (typeof window === "undefined") return [];
   try {
     const raw = sessionStorage.getItem(STORAGE_KEY);
-    if (raw) return JSON.parse(raw) as Message[];
+    if (raw) {
+      const parsed = JSON.parse(raw) as unknown;
+      if (Array.isArray(parsed)) {
+        return parsed
+          .filter((item): item is Partial<Message> & { role: Message["role"]; content: string } => (
+            typeof item === "object"
+            && item !== null
+            && (item.role === "user" || item.role === "assistant")
+            && typeof item.content === "string"
+          ))
+          .map((item) => ({
+            role: item.role,
+            content: item.content,
+            ...(Array.isArray(item.insights) ? { insights: item.insights as AssistantInsight[] } : {}),
+          }));
+      }
+    }
   } catch { /* ignore corrupt data */ }
   return [];
 }
@@ -101,10 +137,23 @@ export function ChatPanel({ onClose }: { onClose: () => void }) {
         messages: updated.slice(-40).map((m) => ({ role: m.role, content: m.content })),
         ...(pathname ? { pageContext: resolvePageContext(pathname) } : {}),
       });
-      setMessages((prev) => [...prev, { role: "assistant", content: reply.content }]);
+      const typedReply = reply as {
+        content: string;
+        role: "assistant";
+        actions?: Array<{ type: string; url?: string; scope?: string[] }>;
+        insights?: AssistantInsight[];
+      };
+      setMessages((prev) => [
+        ...prev,
+        {
+          role: "assistant",
+          content: typedReply.content,
+          ...(Array.isArray(typedReply.insights) && typedReply.insights.length > 0 ? { insights: typedReply.insights } : {}),
+        },
+      ]);
 
       // Handle actions from the AI (navigation, data invalidation)
-      const actions = (reply as { actions?: Array<{ type: string; url?: string; scope?: string[] }> }).actions;
+      const actions = typedReply.actions;
       if (actions) {
         for (const action of actions) {
           if (action.type === "navigate" && action.url) {
@@ -230,7 +279,12 @@ export function ChatPanel({ onClose }: { onClose: () => void }) {
           </div>
         )}
         {messages.map((msg, i) => (
-          <ChatMessage key={i} role={msg.role} content={msg.content} />
+          <ChatMessage
+            key={i}
+            role={msg.role}
+            content={msg.content}
+            {...(msg.insights ? { insights: msg.insights } : {})}
+          />
         ))}
         {isLoading && <TypingIndicator />}
         {error && (
diff --git a/apps/web/src/components/dashboard/DashboardClient.tsx b/apps/web/src/components/dashboard/DashboardClient.tsx
index 6980481..05e3b9b 100644
--- a/apps/web/src/components/dashboard/DashboardClient.tsx
+++ b/apps/web/src/components/dashboard/DashboardClient.tsx
@@ -158,6 +158,12 @@ export function DashboardClient() {
                     <WidgetContainer
                       title={widget.title ?? getWidget(widget.type).label}
                       description={getWidget(widget.type).description}
+                      showDetails={widget.config.showDetails === true}
+                      onToggleDetails={() =>
+                        updateWidgetConfig(widget.id, {
+                          showDetails: widget.config.showDetails !== true,
+                        })
+                      }
                       onRemove={() => removeWidget(widget.id)}
                     >
                       {renderWidget(widget.type, widget.config, (update) =>
diff --git a/apps/web/src/components/dashboard/WidgetContainer.tsx b/apps/web/src/components/dashboard/WidgetContainer.tsx
index 02e70ef..a52d11b 100644
--- a/apps/web/src/components/dashboard/WidgetContainer.tsx
+++ b/apps/web/src/components/dashboard/WidgetContainer.tsx
@@ -8,9 +8,19 @@ interface WidgetContainerProps {
   onRemove: () => void;
   children: React.ReactNode;
   isDragging?: boolean;
+  showDetails?: boolean;
+  onToggleDetails?: () => void;
 }
 
-export function WidgetContainer({ title, description, onRemove, children, isDragging }: WidgetContainerProps) {
+export function WidgetContainer({
+  title,
+  description,
+  onRemove,
+  children,
+  isDragging,
+  showDetails = false,
+  onToggleDetails,
+}: WidgetContainerProps) {
   return (
     <motion.div
       initial={{ opacity: 0, y: 16 }}
@@ -19,14 +29,12 @@ export function WidgetContainer({ title, description, onRemove, children, isDrag
       className={`flex flex-col h-full rounded-xl border overflow-hidden transition-all duration-200 ${
         isDragging
           ? "shadow-xl border-brand-400 dark:border-brand-500 scale-[1.01] ring-2 ring-brand-400/30"
-          : "bg-white dark:bg-gray-900 border-gray-200/80 dark:border-gray-700/60 shadow-sm hover:shadow-md hover:border-gray-300 dark:hover:border-gray-600"
+          : "border-gray-200/80 bg-[linear-gradient(180deg,rgba(248,250,252,0.95),rgba(255,255,255,0.98))] shadow-sm hover:shadow-md hover:border-gray-300 dark:border-gray-700/60 dark:bg-[linear-gradient(180deg,rgba(17,24,39,0.96),rgba(17,24,39,0.92))] dark:hover:border-gray-600"
       }`}
     >
-      {/* Header — clean, no background separation */}
-      <div className="flex items-center justify-between px-4 pt-3.5 pb-2 shrink-0 cursor-grab active:cursor-grabbing widget-drag-handle group">
-        <div className="min-w-0 flex-1">
+      <div className="flex items-start justify-between gap-3 px-4 pt-3.5 pb-3 shrink-0 widget-drag-handle group">
+        <div className="min-w-0 flex-1 cursor-grab active:cursor-grabbing">
           <div className="flex items-center gap-2">
-            {/* Drag grip dots */}
             <svg
               className="w-3.5 h-5 text-gray-300 dark:text-gray-600 shrink-0 opacity-0 group-hover:opacity-100 transition-opacity"
               viewBox="0 0 14 20"
@@ -39,32 +47,58 @@ export function WidgetContainer({ title, description, onRemove, children, isDrag
               <circle cx="4" cy="16" r="1.5" />
               <circle cx="10" cy="16" r="1.5" />
             </svg>
-            <span className="text-sm font-semibold text-gray-800 dark:text-gray-100 truncate">{title}</span>
+            <span className="truncate text-sm font-semibold text-gray-900 dark:text-gray-100">
+              {title}
+            </span>
+            {showDetails ? (
+              <span className="rounded-full bg-brand-50 px-2 py-0.5 text-[10px] font-semibold uppercase tracking-[0.14em] text-brand-700 dark:bg-brand-500/10 dark:text-brand-300">
+                Details
+              </span>
+            ) : null}
           </div>
           {description && (
-            <p className="text-[11px] text-gray-400 dark:text-gray-500 truncate mt-0.5 ml-[22px]">{description}</p>
+            <p className="ml-[22px] mt-1 line-clamp-2 text-[11px] leading-4 text-gray-500 dark:text-gray-400">
+              {description}
+            </p>
           )}
         </div>
-        <button
-          type="button"
-          onClick={(e) => {
-            e.stopPropagation();
-            onRemove();
-          }}
-          className="ml-2 p-1.5 text-gray-300 dark:text-gray-600 hover:text-red-500 dark:hover:text-red-400 hover:bg-red-50 dark:hover:bg-red-950/30 rounded-lg transition-colors shrink-0 opacity-0 group-hover:opacity-100"
-          title="Remove widget"
-        >
-          <svg className="w-3.5 h-3.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M6 18L18 6M6 6l12 12" />
-          </svg>
-        </button>
+        <div className="flex items-center gap-2 shrink-0">
+          {onToggleDetails ? (
+            <button
+              type="button"
+              onClick={(e) => {
+                e.stopPropagation();
+                onToggleDetails();
+              }}
+              className={`rounded-xl border px-3 py-1.5 text-[11px] font-semibold transition ${
+                showDetails
+                  ? "border-brand-200 bg-brand-50 text-brand-700 hover:bg-brand-100 dark:border-brand-500/30 dark:bg-brand-500/10 dark:text-brand-300"
+                  : "border-gray-200 bg-white/80 text-gray-500 hover:border-gray-300 hover:text-gray-700 dark:border-gray-700 dark:bg-gray-900/70 dark:text-gray-400 dark:hover:text-gray-200"
+              }`}
+              title={showDetails ? "Hide details" : "Show details"}
+            >
+              {showDetails ? "Details on" : "Details off"}
+            </button>
+          ) : null}
+          <button
+            type="button"
+            onClick={(e) => {
+              e.stopPropagation();
+              onRemove();
+            }}
+            className="rounded-lg p-1.5 text-gray-300 transition-colors hover:bg-red-50 hover:text-red-500 dark:text-gray-600 dark:hover:bg-red-950/30 dark:hover:text-red-400"
+            title="Remove widget"
+          >
+            <svg className="w-3.5 h-3.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M6 18L18 6M6 6l12 12" />
+            </svg>
+          </button>
+        </div>
       </div>
 
-      {/* Subtle separator */}
-      <div className="mx-4 border-t border-gray-100 dark:border-gray-800" />
+      <div className="mx-4 border-t border-gray-200/80 dark:border-gray-800" />
 
-      {/* Body */}
-      <div className="flex-1 overflow-auto p-4">{children}</div>
+      <div className="flex-1 overflow-auto p-4 pt-3">{children}</div>
     </motion.div>
   );
 }
diff --git a/apps/web/src/components/dashboard/widgets/BudgetForecastWidget.tsx b/apps/web/src/components/dashboard/widgets/BudgetForecastWidget.tsx
index 844d38b..38e8ff0 100644
--- a/apps/web/src/components/dashboard/widgets/BudgetForecastWidget.tsx
+++ b/apps/web/src/components/dashboard/widgets/BudgetForecastWidget.tsx
@@ -19,7 +19,67 @@ function textColorClass(pct: number): string {
   return "text-green-700";
 }
 
+type BudgetForecastLocation = {
+  countryCode?: string | null;
+  countryName?: string | null;
+  federalState?: string | null;
+  metroCityName?: string | null;
+  activeAssignmentCount?: number;
+  burnRateCents?: number;
+};
+
+type BudgetForecastRow = {
+  projectId?: string;
+  projectName: string;
+  shortCode: string;
+  clientId: string | null;
+  clientName: string | null;
+  budgetCents: number;
+  spentCents: number;
+  remainingCents?: number;
+  burnRate: number;
+  estimatedExhaustionDate: string | null;
+  pctUsed: number;
+  activeAssignmentCount?: number;
+  calendarLocations?: BudgetForecastLocation[];
+};
+
+function formatCurrency(cents: number | undefined): string {
+  if (cents === undefined) return "—";
+  return `${(cents / 100).toLocaleString("de-DE", { maximumFractionDigits: 0 })} €`;
+}
+
+function formatLocation(location: BudgetForecastLocation): string {
+  const parts = [
+    location.countryCode ?? location.countryName ?? null,
+    location.federalState ?? null,
+    location.metroCityName ?? null,
+  ].filter((part): part is string => Boolean(part));
+  return parts.length > 0 ? parts.join(" / ") : "No calendar context";
+}
+
+function SummaryCard({
+  label,
+  value,
+  helper,
+}: {
+  label: string;
+  value: string;
+  helper: string;
+}) {
+  return (
+    <div className="rounded-2xl border border-gray-200 bg-gray-50/80 px-3 py-2 dark:border-gray-800 dark:bg-gray-950/40">
+      <div className="text-[10px] font-semibold uppercase tracking-[0.16em] text-gray-500 dark:text-gray-400">
+        {label}
+      </div>
+      <div className="mt-1 text-sm font-semibold text-gray-900 dark:text-gray-100">{value}</div>
+      <div className="mt-0.5 text-[10px] leading-4 text-gray-500 dark:text-gray-400">{helper}</div>
+    </div>
+  );
+}
+
 export function BudgetForecastWidget({ config, onConfigChange }: WidgetProps) {
+  const showDetails = config.showDetails === true;
   const { clients } = useWidgetFilterOptions();
 
   const filters = useMemo<WidgetFilter[]>(
@@ -39,7 +99,7 @@ export function BudgetForecastWidget({ config, onConfigChange }: WidgetProps) {
   const clientId = (config.clientId as string) ?? "";
 
   const rows = useMemo(() => {
-    const all = data ?? [];
+    const all = (data ?? []) as BudgetForecastRow[];
     return all.filter((r) => {
       if (search && !r.projectName.toLowerCase().includes(search) && !r.shortCode.toLowerCase().includes(search)) return false;
       if (clientId && r.clientId !== clientId) return false;
@@ -47,6 +107,21 @@ export function BudgetForecastWidget({ config, onConfigChange }: WidgetProps) {
     });
   }, [data, search, clientId]);
 
+  const totals = useMemo(() => rows.reduce((acc, row) => {
+    acc.budgetCents += row.budgetCents;
+    acc.spentCents += row.spentCents;
+    acc.remainingCents += row.remainingCents ?? Math.max(0, row.budgetCents - row.spentCents);
+    acc.burnRate += row.burnRate;
+    acc.activeAssignmentCount += row.activeAssignmentCount ?? 0;
+    return acc;
+  }, {
+    budgetCents: 0,
+    spentCents: 0,
+    remainingCents: 0,
+    burnRate: 0,
+    activeAssignmentCount: 0,
+  }), [rows]);
+
   if (isLoading && !data) {
     return (
       <div className="flex flex-col gap-1 pt-1">
@@ -75,6 +150,28 @@ export function BudgetForecastWidget({ config, onConfigChange }: WidgetProps) {
   return (
     <div className="flex flex-col h-full overflow-hidden">
       <WidgetFilterBar filters={filters} values={config} onChange={onConfigChange ?? (() => {})} />
+      <div className="mb-3 grid gap-2 sm:grid-cols-2 xl:grid-cols-4">
+        <SummaryCard
+          label="Projects"
+          value={String(rows.length)}
+          helper={`${totals.activeAssignmentCount} active assignments in scope`}
+        />
+        <SummaryCard
+          label="Budget"
+          value={formatCurrency(totals.budgetCents)}
+          helper={`${formatCurrency(totals.spentCents)} spent`}
+        />
+        <SummaryCard
+          label="Remaining"
+          value={formatCurrency(totals.remainingCents)}
+          helper={`${rows.filter((row) => row.remainingCents !== undefined && row.remainingCents <= 0).length} exhausted`}
+        />
+        <SummaryCard
+          label="Burn / Month"
+          value={formatCurrency(totals.burnRate)}
+          helper="Holiday- and absence-adjusted active burn"
+        />
+      </div>
       <div className="overflow-auto flex-1">
         <table className="w-full text-xs">
           <thead className="bg-gray-50 dark:bg-gray-800/50 sticky top-0">
@@ -86,7 +183,7 @@ export function BudgetForecastWidget({ config, onConfigChange }: WidgetProps) {
                 Budget Usage <InfoTooltip content="Percentage of total budget consumed by current allocations" />
               </th>
               <th className="px-3 py-2 text-right font-medium text-gray-500 dark:text-gray-400">
-                Burn/mo <InfoTooltip content="Monthly burn rate based on currently active allocations" />
+                Burn/mo <InfoTooltip content="Current-month burn rate based on active allocations, adjusted for regional holidays and approved absences where resource calendars are available." />
               </th>
               <th className="px-3 py-2 text-right font-medium text-gray-500 dark:text-gray-400">
                 Exhaustion <InfoTooltip content="Projected date when budget will be fully consumed at the current burn rate" />
@@ -96,11 +193,41 @@ export function BudgetForecastWidget({ config, onConfigChange }: WidgetProps) {
           <tbody className="divide-y divide-gray-100 dark:divide-gray-800">
             {rows.map((row) => (
               <tr key={row.shortCode} className="hover:bg-gray-50 dark:hover:bg-gray-800/30">
-                <td className="px-3 py-2 font-medium text-gray-900 dark:text-gray-100 max-w-[140px] truncate">
-                  <span className="font-mono text-gray-500 dark:text-gray-400 mr-1">{row.shortCode}</span>
-                  {row.projectName}
+                <td className="px-3 py-2 font-medium text-gray-900 dark:text-gray-100 max-w-[260px] align-top">
+                  <div>
+                    <span className="font-mono text-gray-500 dark:text-gray-400 mr-1">{row.shortCode}</span>
+                    {row.projectName}
+                  </div>
+                  <div className="mt-1 text-[10px] font-normal leading-4 text-gray-500 dark:text-gray-400">
+                    {row.clientName ?? "No client"}
+                    {!showDetails && row.calendarLocations && row.calendarLocations.length > 0
+                      ? ` · ${formatLocation(row.calendarLocations[0]!)}`
+                      : ""}
+                  </div>
+                  {showDetails ? (
+                    <div className="mt-1 space-y-1 text-[10px] font-normal leading-4 text-gray-500 dark:text-gray-400">
+                      <div className="grid gap-x-3 gap-y-0.5 sm:grid-cols-2">
+                        <div>{row.activeAssignmentCount ?? 0} active assignments</div>
+                        <div>Remaining {formatCurrency(row.remainingCents ?? Math.max(0, row.budgetCents - row.spentCents))}</div>
+                      </div>
+                      <div className="flex flex-wrap gap-1">
+                        {row.calendarLocations && row.calendarLocations.length > 0 ? (
+                          row.calendarLocations.slice(0, 4).map((location) => (
+                            <span
+                              key={`${location.countryCode ?? location.countryName ?? "na"}:${location.federalState ?? "na"}:${location.metroCityName ?? "na"}`}
+                              className="inline-flex items-center rounded-full border border-gray-200 bg-gray-50 px-2 py-0.5 dark:border-gray-700 dark:bg-gray-900/70"
+                            >
+                              {formatLocation(location)} · {location.activeAssignmentCount ?? 0}x · {formatCurrency(location.burnRateCents)}
+                            </span>
+                          ))
+                        ) : (
+                          <span>No active calendar basis in the current month</span>
+                        )}
+                      </div>
+                    </div>
+                  ) : null}
                 </td>
-                <td className="px-3 py-2">
+                <td className="px-3 py-2 align-top">
                   <div className="flex items-center gap-2">
                     <div className="flex-1 h-2 bg-gray-100 dark:bg-gray-700 rounded-full overflow-hidden">
                       <div
@@ -112,14 +239,37 @@ export function BudgetForecastWidget({ config, onConfigChange }: WidgetProps) {
                       {row.pctUsed}%
                     </span>
                   </div>
+                  <div className="mt-1 text-[10px] leading-4 text-gray-500 dark:text-gray-400">
+                    {formatCurrency(row.spentCents)} / {formatCurrency(row.budgetCents)}
+                  </div>
+                  {showDetails ? (
+                    <div className="text-[10px] leading-4 text-gray-500 dark:text-gray-400">
+                      Remaining {formatCurrency(row.remainingCents ?? Math.max(0, row.budgetCents - row.spentCents))}
+                    </div>
+                  ) : null}
                 </td>
-                <td className="px-3 py-2 text-right text-gray-700 dark:text-gray-300 tabular-nums">
-                  {row.burnRate > 0
-                    ? `${(row.burnRate / 100).toLocaleString("de-DE", { maximumFractionDigits: 0 })} \u20AC`
-                    : "\u2014"}
+                <td className="px-3 py-2 text-right text-gray-700 dark:text-gray-300 tabular-nums align-top">
+                  <div>
+                    {row.burnRate > 0 ? formatCurrency(row.burnRate) : "\u2014"}
+                  </div>
+                  {showDetails ? (
+                    <div className="mt-1 space-y-0.5 text-[10px] leading-4 text-gray-500 dark:text-gray-400">
+                      <div>{row.activeAssignmentCount ?? 0} active assignments</div>
+                      {(row.calendarLocations ?? []).slice(0, 3).map((location) => (
+                        <div key={`${location.countryCode ?? location.countryName ?? "na"}:${location.federalState ?? "na"}:${location.metroCityName ?? "na"}`}>
+                          {formatLocation(location)} · {location.activeAssignmentCount ?? 0}x · {formatCurrency(location.burnRateCents)}
+                        </div>
+                      ))}
+                    </div>
+                  ) : null}
                 </td>
-                <td className="px-3 py-2 text-right text-gray-500 dark:text-gray-400 tabular-nums">
-                  {row.estimatedExhaustionDate ?? "\u2014"}
+                <td className="px-3 py-2 text-right text-gray-500 dark:text-gray-400 tabular-nums align-top">
+                  <div>{row.estimatedExhaustionDate ?? "\u2014"}</div>
+                  {showDetails ? (
+                    <div className="mt-1 text-[10px] leading-4 text-gray-500 dark:text-gray-400">
+                      at {formatCurrency(row.burnRate)} / month
+                    </div>
+                  ) : null}
                 </td>
               </tr>
             ))}
diff --git a/apps/web/src/components/dashboard/widgets/ChargeabilityWidget.tsx b/apps/web/src/components/dashboard/widgets/ChargeabilityWidget.tsx
index f1669fa..1876217 100644
--- a/apps/web/src/components/dashboard/widgets/ChargeabilityWidget.tsx
+++ b/apps/web/src/components/dashboard/widgets/ChargeabilityWidget.tsx
@@ -36,8 +36,91 @@ type ChargeabilityRow = {
   chargeabilityTarget: number;
   actualChargeability: number;
   expectedChargeability: number;
+  countryCode?: string | null;
+  countryName?: string | null;
+  federalState?: string | null;
+  metroCityName?: string | null;
+  derivation?: {
+    weeklyAvailabilityHours: number;
+    baseWorkingDays: number;
+    effectiveWorkingDayEquivalent: number;
+    baseAvailableHours: number;
+    effectiveAvailableHours: number;
+    publicHolidayCount: number;
+    publicHolidayWorkdayCount: number;
+    publicHolidayHoursDeduction: number;
+    absenceDayEquivalent: number;
+    absenceHoursDeduction: number;
+    actualBookedHours: number;
+    expectedBookedHours: number;
+    targetBookedHours: number;
+    unassignedHours: number;
+  };
 };
 
+function formatHours(value: number | undefined): string {
+  if (value === undefined) return "—";
+  return `${Number.isInteger(value) ? value.toFixed(0) : value.toFixed(1)}h`;
+}
+
+function formatDayEquivalent(value: number | undefined): string {
+  if (value === undefined) return "—";
+  return Number.isInteger(value) ? `${value}` : value.toFixed(1);
+}
+
+function MetricPill({ label, value }: { label: string; value: string }) {
+  return (
+    <span className="inline-flex items-center gap-1 rounded-full border border-gray-200 bg-gray-50 px-2 py-0.5 text-[10px] font-medium text-gray-600 dark:border-gray-700 dark:bg-gray-900/70 dark:text-gray-300">
+      <span className="text-gray-400 dark:text-gray-500">{label}</span>
+      <span className="text-gray-700 dark:text-gray-200">{value}</span>
+    </span>
+  );
+}
+
+function formatLocation(row: ChargeabilityRow): string {
+  const parts = [row.countryCode ?? row.countryName ?? null, row.federalState ?? null, row.metroCityName ?? null]
+    .filter((part): part is string => Boolean(part));
+  return parts.length > 0 ? parts.join(" / ") : "No calendar context";
+}
+
+function ChargeabilityContextLine({ row }: { row: ChargeabilityRow }) {
+  const derivation = row.derivation;
+
+  if (!derivation) {
+    return null;
+  }
+
+  return (
+    <div className="mt-1.5 space-y-1.5 text-[10px] leading-4 text-gray-500 dark:text-gray-400">
+      <div className="flex flex-wrap gap-1">
+        <MetricPill label="Loc" value={formatLocation(row)} />
+        <MetricPill label="Week" value={formatHours(derivation.weeklyAvailabilityHours)} />
+        <MetricPill label="Target" value={formatHours(derivation.targetBookedHours)} />
+      </div>
+      <div className="grid gap-x-3 gap-y-0.5 sm:grid-cols-2">
+        <div>
+          Days {formatDayEquivalent(derivation.baseWorkingDays)} {"->"} {formatDayEquivalent(derivation.effectiveWorkingDayEquivalent)}
+        </div>
+        <div>
+          Holidays {derivation.publicHolidayWorkdayCount}/{derivation.publicHolidayCount} ({formatHours(derivation.publicHolidayHoursDeduction)})
+        </div>
+        <div>
+          Base {formatHours(derivation.baseAvailableHours)} {"->"} Effective {formatHours(derivation.effectiveAvailableHours)}
+        </div>
+        <div>
+          Absence {formatDayEquivalent(derivation.absenceDayEquivalent)} ({formatHours(derivation.absenceHoursDeduction)})
+        </div>
+        <div>
+          Actual {formatHours(derivation.actualBookedHours)} · Expected {formatHours(derivation.expectedBookedHours)}
+        </div>
+        <div>
+          Free {formatHours(derivation.unassignedHours)}
+        </div>
+      </div>
+    </div>
+  );
+}
+
 function FilterDropdown({ label, children }: { label: string; children: ReactNode }) {
   const [isOpen, setIsOpen] = useState(false);
   const dropdownRef = useRef<HTMLDivElement | null>(null);
@@ -74,7 +157,13 @@ function FilterDropdown({ label, children }: { label: string; children: ReactNod
 }
 
 export function ChargeabilityWidget({ config: _config, onConfigChange }: WidgetProps) {
-  const config = _config as { topN?: number; watchlistThreshold?: number; chapter?: string; includeProposed?: boolean };
+  const config = _config as {
+    topN?: number;
+    watchlistThreshold?: number;
+    chapter?: string;
+    includeProposed?: boolean;
+    showDetails?: boolean;
+  };
   const { chapters } = useWidgetFilterOptions();
 
   const widgetFilters = useMemo<WidgetFilter[]>(
@@ -86,6 +175,7 @@ export function ChargeabilityWidget({ config: _config, onConfigChange }: WidgetP
   );
 
   const includeProposed = !!config.includeProposed;
+  const showDetails = !!config.showDetails;
   const chapterFilter = (config.chapter as string) ?? "";
   const [showDeparted, setShowDeparted] = useState(false);
   const [selectedCountryIds, setSelectedCountryIds] = useState<string[]>([]);
@@ -266,7 +356,7 @@ export function ChargeabilityWidget({ config: _config, onConfigChange }: WidgetP
             <p className="text-xs text-gray-400 flex items-center gap-1">
               Period: {month}
               <InfoTooltip
-                content="Chargeability is calculated for the current calendar month. Available hours are based on each person's weekly schedule (WeekdayAvailability). Watchlist threshold: 15 percentage points below target."
+                content="Chargeability is calculated for the current calendar month. Available hours are derived from each person's weekly schedule and reduced by regional public holidays plus approved absences. Watchlist threshold: 15 percentage points below target."
                 width="w-72"
               />
             </p>
@@ -330,7 +420,7 @@ export function ChargeabilityWidget({ config: _config, onConfigChange }: WidgetP
       >
         <h3 className="text-xs font-semibold text-gray-500 uppercase tracking-wider px-1 mb-1 sticky top-0 bg-white flex items-center">
           Top Chargeability
-          <InfoTooltip content="Resources ranked by highest actual chargeability this month. Chargeability = chargeable booked hours / total available hours." />
+          <InfoTooltip content="Resources ranked by highest actual chargeability this month. Chargeability = chargeable booked hours divided by holiday- and absence-adjusted available hours." />
           <span className="ml-1 font-normal normal-case text-gray-400">
             {visibleTop.length}/{top.length}
           </span>
@@ -390,18 +480,33 @@ export function ChargeabilityWidget({ config: _config, onConfigChange }: WidgetP
               {visibleTop.map((r, i) => (
                 <tr key={r.id} className="hover:bg-gray-50 dark:hover:bg-gray-800/40">
                   <td className="px-2 py-1 text-gray-400">{i + 1}</td>
-                  <td className="px-2 py-1 text-gray-800 dark:text-gray-200 max-w-[120px]">
+                  <td className="px-2 py-1 text-gray-800 dark:text-gray-200 max-w-[240px] align-top">
                     <div className="truncate">
                       <span title={r.displayName}>{r.displayName}</span>
                       {r.chapter && <span className="text-gray-400 ml-1">· {r.chapter}</span>}
                     </div>
+                    {showDetails ? <ChargeabilityContextLine row={r} /> : null}
                     <UtilizationBar percent={r.actualChargeability} />
                   </td>
-                  <td className="px-2 py-1 text-right font-semibold text-green-700 dark:text-green-400">
-                    <AnimatedNumber value={r.actualChargeability} suffix="%" />
+                  <td className="px-2 py-1 text-right font-semibold text-green-700 dark:text-green-400 align-top">
+                    <div>
+                      <AnimatedNumber value={r.actualChargeability} suffix="%" />
+                    </div>
+                    {showDetails ? (
+                      <div className="mt-1 text-[10px] font-normal leading-4 text-gray-500 dark:text-gray-400">
+                        {formatHours(r.derivation?.actualBookedHours)} / {formatHours(r.derivation?.effectiveAvailableHours)}
+                      </div>
+                    ) : null}
                   </td>
-                  <td className="px-2 py-1 text-right text-gray-400">
-                    <AnimatedNumber value={r.expectedChargeability} suffix="%" />
+                  <td className="px-2 py-1 text-right text-gray-400 align-top">
+                    <div>
+                      <AnimatedNumber value={r.expectedChargeability} suffix="%" />
+                    </div>
+                    {showDetails ? (
+                      <div className="mt-1 text-[10px] leading-4 text-gray-500 dark:text-gray-400">
+                        {formatHours(r.derivation?.expectedBookedHours)} / {formatHours(r.derivation?.effectiveAvailableHours)}
+                      </div>
+                    ) : null}
                   </td>
                 </tr>
               ))}
@@ -473,18 +578,33 @@ export function ChargeabilityWidget({ config: _config, onConfigChange }: WidgetP
             <tbody className="divide-y divide-gray-50">
               {visibleWatchlist.map((r) => (
                 <tr key={r.id} className="hover:bg-gray-50 dark:hover:bg-gray-800/40">
-                  <td className="px-2 py-1 text-gray-800 dark:text-gray-200 max-w-[140px]">
+                  <td className="px-2 py-1 text-gray-800 dark:text-gray-200 max-w-[240px] align-top">
                     <div className="truncate">
                       <span title={r.displayName}>{r.displayName}</span>
                       {r.chapter && <span className="text-gray-400 ml-1">· {r.chapter}</span>}
                     </div>
+                    {showDetails ? <ChargeabilityContextLine row={r} /> : null}
                     <UtilizationBar percent={r.actualChargeability} />
                   </td>
-                  <td className="px-2 py-1 text-right font-semibold text-red-600 dark:text-red-400">
-                    <AnimatedNumber value={r.actualChargeability} suffix="%" />
+                  <td className="px-2 py-1 text-right font-semibold text-red-600 dark:text-red-400 align-top">
+                    <div>
+                      <AnimatedNumber value={r.actualChargeability} suffix="%" />
+                    </div>
+                    {showDetails ? (
+                      <div className="mt-1 text-[10px] font-normal leading-4 text-gray-500 dark:text-gray-400">
+                        {formatHours(r.derivation?.actualBookedHours)} / {formatHours(r.derivation?.effectiveAvailableHours)}
+                      </div>
+                    ) : null}
                   </td>
-                  <td className="px-2 py-1 text-right text-gray-400">
-                    <AnimatedNumber value={r.chargeabilityTarget} suffix="%" />
+                  <td className="px-2 py-1 text-right text-gray-400 align-top">
+                    <div>
+                      <AnimatedNumber value={r.chargeabilityTarget} suffix="%" />
+                    </div>
+                    {showDetails ? (
+                      <div className="mt-1 text-[10px] leading-4 text-gray-500 dark:text-gray-400">
+                        Target {formatHours(r.derivation?.targetBookedHours)} · Free {formatHours(r.derivation?.unassignedHours)}
+                      </div>
+                    ) : null}
                   </td>
                 </tr>
               ))}
diff --git a/apps/web/src/components/dashboard/widgets/DemandWidget.tsx b/apps/web/src/components/dashboard/widgets/DemandWidget.tsx
index eb71d2e..206a383 100644
--- a/apps/web/src/components/dashboard/widgets/DemandWidget.tsx
+++ b/apps/web/src/components/dashboard/widgets/DemandWidget.tsx
@@ -8,7 +8,53 @@ import { ProgressRing } from "~/components/ui/ProgressRing.js";
 
 type GroupBy = "project" | "person" | "chapter";
 
+type DemandRow = {
+  id: string;
+  name: string;
+  shortCode: string;
+  allocatedHours: number;
+  requiredFTEs: number;
+  resourceCount: number;
+  derivation?: {
+    periodStart: string;
+    periodEnd: string;
+    periodWorkingHoursBase: number;
+    requiredHours: number | null;
+    requiredFTEs: number;
+    fillPct: number | null;
+    demandSource: "DEMAND_REQUIREMENTS" | "PROJECT_STAFFING_REQS" | "NONE";
+    calendarLocations: Array<{
+      countryCode: string | null;
+      federalState: string | null;
+      metroCityName: string | null;
+      resourceCount: number;
+      allocatedHours: number;
+    }>;
+  };
+};
+
+type DemandDerivation = NonNullable<DemandRow["derivation"]>;
+type DemandCalendarLocation = DemandDerivation["calendarLocations"][number];
+
+function formatHours(value: number | null | undefined): string {
+  if (value == null) return "—";
+  return `${Number.isInteger(value) ? value.toFixed(0) : value.toFixed(1)}h`;
+}
+
+function formatLocation(location: DemandCalendarLocation): string {
+  const parts = [location.countryCode, location.federalState, location.metroCityName]
+    .filter((part): part is string => Boolean(part));
+  return parts.length > 0 ? parts.join(" / ") : "No calendar context";
+}
+
+function formatDemandSource(source: DemandDerivation["demandSource"] | undefined): string {
+  if (source === "DEMAND_REQUIREMENTS") return "Source: Demand requirements";
+  if (source === "PROJECT_STAFFING_REQS") return "Source: Project staffing reqs";
+  return "No demand basis";
+}
+
 export function DemandWidget({ config, onConfigChange }: WidgetProps) {
+  const showDetails = config.showDetails === true;
   const groupBy = (config.groupBy as GroupBy) || "project";
 
   type SortKey = "name" | "allocatedHours" | "requiredFTEs" | "resourceCount";
@@ -48,7 +94,7 @@ export function DemandWidget({ config, onConfigChange }: WidgetProps) {
     );
   }
 
-  const rows = data ?? [];
+  const rows = (data ?? []) as DemandRow[];
 
   const sorted = [...rows].sort((a, b) => {
     const mult = sortDir === "asc" ? 1 : -1;
@@ -144,37 +190,84 @@ export function DemandWidget({ config, onConfigChange }: WidgetProps) {
           <tbody className="divide-y divide-gray-100">
             {sorted.map((row) => (
               <tr key={row.id} className="hover:bg-gray-50">
-                <td className="px-3 py-2 font-medium text-gray-900 max-w-[200px] truncate">
-                  {groupBy === "project" ? (
-                    <span><span className="font-mono text-gray-500 mr-1">{row.shortCode}</span>{row.name}</span>
-                  ) : (
-                    row.name
-                  )}
+                <td className="px-3 py-2 text-gray-900 max-w-[280px] align-top">
+                  <div className="font-medium truncate">
+                    {groupBy === "project" ? (
+                      <span><span className="font-mono text-gray-500 mr-1">{row.shortCode}</span>{row.name}</span>
+                    ) : (
+                      row.name
+                    )}
+                  </div>
+                  {showDetails && groupBy === "project" && row.derivation ? (
+                    <div className="mt-1 space-y-0.5 text-[10px] leading-4 text-gray-500">
+                      <div>
+                        {row.derivation.periodStart} to {row.derivation.periodEnd}
+                      </div>
+                      <div>
+                        {row.derivation.calendarLocations.length > 0
+                          ? row.derivation.calendarLocations
+                            .slice(0, 2)
+                            .map((location) =>
+                              `${formatLocation(location)} (${formatHours(location.allocatedHours)})`,
+                            )
+                            .join(" · ")
+                          : "No location-based booking basis"}
+                      </div>
+                      {row.derivation.calendarLocations.length > 2 ? (
+                        <div>+ {row.derivation.calendarLocations.length - 2} more calendar contexts</div>
+                      ) : null}
+                    </div>
+                  ) : null}
+                </td>
+                <td className="px-3 py-2 text-right align-top">
+                  <div className="text-gray-700">{row.allocatedHours}h</div>
+                  {showDetails && groupBy === "project" && row.derivation ? (
+                    <div className="mt-1 space-y-0.5 text-[10px] leading-4 text-gray-500">
+                      <div>{row.derivation.calendarLocations.length} calendar basis{row.derivation.calendarLocations.length === 1 ? "" : "es"}</div>
+                      <div>{row.resourceCount} resource{row.resourceCount === 1 ? "" : "s"} in scope</div>
+                    </div>
+                  ) : null}
                 </td>
-                <td className="px-3 py-2 text-right text-gray-700">{row.allocatedHours}h</td>
                 {groupBy === "project" && (
-                  <td className="px-3 py-2 text-right text-gray-700">
+                  <td className="px-3 py-2 text-right align-top text-gray-700">
                     {(() => {
                       const ftes = row.requiredFTEs as unknown as number;
                       if (ftes <= 0) return "—";
-                      const requiredHours = ftes * 22 * 3 * 8;
-                      const fillPct = Math.min(100, Math.round((row.allocatedHours / requiredHours) * 100));
-                      const isBelowTarget = row.allocatedHours / 8 < ftes * 22 * 3;
+                      const requiredHours = row.derivation?.requiredHours ?? null;
+                      const rawFillPct = row.derivation?.fillPct ?? null;
+                      const fillPct = Math.min(100, rawFillPct ?? 0);
+                      const isBelowTarget = rawFillPct !== null ? rawFillPct < 100 : false;
                       const ringColor = isBelowTarget
                         ? "var(--color-red-500, #ef4444)"
                         : "var(--color-green-500, #22c55e)";
                       return (
-                        <span className="inline-flex items-center gap-1.5">
-                          <ProgressRing value={fillPct} size={22} strokeWidth={2.5} color={ringColor} />
-                          <span className={isBelowTarget ? "text-red-600 font-semibold" : "text-green-700"}>
-                            {ftes} FTE
+                        <div className="inline-flex flex-col items-end gap-1">
+                          <span className="inline-flex items-center gap-1.5">
+                            <ProgressRing value={fillPct} size={22} strokeWidth={2.5} color={ringColor} />
+                            <span className={isBelowTarget ? "text-red-600 font-semibold" : "text-green-700"}>
+                              {ftes} FTE
+                            </span>
                           </span>
-                        </span>
+                          {showDetails ? (
+                            <div className="space-y-0.5 text-[10px] leading-4 text-gray-500">
+                              <div>{formatHours(row.allocatedHours)} / {formatHours(requiredHours)}</div>
+                              <div>{rawFillPct == null ? "—" : `${rawFillPct}% coverage`} · {formatHours(row.derivation?.periodWorkingHoursBase)} per 1.0 FTE</div>
+                              <div>{formatDemandSource(row.derivation?.demandSource)}</div>
+                            </div>
+                          ) : null}
+                        </div>
                       );
                     })()}
                   </td>
                 )}
-                <td className="px-3 py-2 text-right text-gray-500">{row.resourceCount}</td>
+                <td className="px-3 py-2 text-right align-top text-gray-500">
+                  <div>{row.resourceCount}</div>
+                  {showDetails && groupBy === "project" && row.derivation?.calendarLocations.length ? (
+                    <div className="mt-1 text-[10px] leading-4 text-gray-500">
+                      {row.derivation.calendarLocations.reduce((sum, location) => sum + location.resourceCount, 0)} resource entries across locations
+                    </div>
+                  ) : null}
+                </td>
               </tr>
             ))}
           </tbody>
diff --git a/apps/web/src/components/dashboard/widgets/PeakTimesChart.tsx b/apps/web/src/components/dashboard/widgets/PeakTimesChart.tsx
index 91429b6..c2bebee 100644
--- a/apps/web/src/components/dashboard/widgets/PeakTimesChart.tsx
+++ b/apps/web/src/components/dashboard/widgets/PeakTimesChart.tsx
@@ -1,55 +1,172 @@
 "use client";
 
-import {
-  BarChart,
-  Bar,
-  XAxis,
-  YAxis,
-  CartesianGrid,
-  Tooltip,
-  ReferenceLine,
-  ResponsiveContainer,
-  Legend,
-} from "recharts";
+import { useMemo, useState } from "react";
 
-const COLORS = [
-  "#6366f1", "#10b981", "#f59e0b", "#ef4444", "#8b5cf6",
-  "#06b6d4", "#84cc16", "#f97316", "#ec4899", "#14b8a6",
-];
+type PeakTimesChartRow = {
+  period: string;
+  label: string;
+  bookedHours: number;
+  capacityHours: number;
+  utilizationPct: number;
+  remainingHours: number;
+  overbookedHours: number;
+  isCurrentPeriod: boolean;
+};
 
 interface PeakTimesChartProps {
-  chartData: Record<string, number | string>[];
-  groups: string[];
+  rows: PeakTimesChartRow[];
+  selectedPeriod: string | null;
+  onSelectedPeriodChange?: (period: string) => void;
 }
 
-export default function PeakTimesChart({ chartData, groups }: PeakTimesChartProps) {
-  if (chartData.length === 0) {
+function formatHours(value: number): string {
+  return new Intl.NumberFormat("de-DE", {
+    minimumFractionDigits: 0,
+    maximumFractionDigits: 1,
+  }).format(value);
+}
+
+function utilizationBarTone(utilizationPct: number): string {
+  if (utilizationPct > 100) return "bg-red-500";
+  if (utilizationPct > 75) return "bg-emerald-500";
+  if (utilizationPct >= 50) return "bg-amber-400";
+  return "bg-rose-400";
+}
+
+function utilizationTextTone(utilizationPct: number): string {
+  if (utilizationPct > 100) return "text-red-600 dark:text-red-300";
+  if (utilizationPct > 75) return "text-emerald-600 dark:text-emerald-300";
+  if (utilizationPct >= 50) return "text-amber-600 dark:text-amber-300";
+  return "text-rose-600 dark:text-rose-300";
+}
+
+export default function PeakTimesChart({
+  rows,
+  selectedPeriod,
+  onSelectedPeriodChange,
+}: PeakTimesChartProps) {
+  const [hoveredPeriod, setHoveredPeriod] = useState<string | null>(null);
+
+  const fallbackPeriod = selectedPeriod && rows.some((row) => row.period === selectedPeriod)
+    ? selectedPeriod
+    : rows[0]?.period ?? null;
+  const activePeriod = hoveredPeriod ?? fallbackPeriod;
+  const activeRow = useMemo(
+    () => rows.find((row) => row.period === activePeriod) ?? rows[0] ?? null,
+    [activePeriod, rows],
+  );
+  const chartMaxPct = useMemo(() => {
+    const maxUtilization = Math.max(100, ...rows.map((row) => row.utilizationPct));
+    return Math.max(120, Math.ceil(maxUtilization / 20) * 20);
+  }, [rows]);
+  const tickValues = useMemo(() => {
+    const base = [0, 50, 100];
+    return chartMaxPct > 100 ? [...base, chartMaxPct] : base;
+  }, [chartMaxPct]);
+  const referenceLineBottom = (100 / chartMaxPct) * 100;
+
+  if (rows.length === 0) {
     return (
-      <div className="flex items-center justify-center h-full text-sm text-gray-400">
-        No allocation data in selected period.
+      <div className="flex h-full items-center justify-center rounded-[22px] border border-dashed border-slate-200 bg-slate-50/80 text-sm text-slate-400 dark:border-slate-700 dark:bg-slate-900/40">
+        No allocation data in the selected horizon.
       </div>
     );
   }
 
   return (
-    <ResponsiveContainer width="100%" height="100%">
-      <BarChart data={chartData} margin={{ top: 4, right: 8, left: -10, bottom: 0 }}>
-        <CartesianGrid strokeDasharray="3 3" stroke="#f1f5f9" />
-        <XAxis dataKey="period" tick={{ fontSize: 10 }} />
-        <YAxis tick={{ fontSize: 10 }} />
-        <Tooltip contentStyle={{ fontSize: 11 }} />
-        <Legend wrapperStyle={{ fontSize: 11 }} />
-        {/* eslint-disable-next-line @typescript-eslint/no-explicit-any */}
-        <ReferenceLine
-          {...({ dataKey: "capacity" } as any)}
-          stroke="#ef4444"
-          strokeDasharray="5 5"
-          label={{ value: "Capacity", fontSize: 10, fill: "#ef4444" }}
-        />
-        {groups.map((g, i) => (
-          <Bar key={g} dataKey={g} stackId="a" fill={COLORS[i % COLORS.length]} />
-        ))}
-      </BarChart>
-    </ResponsiveContainer>
+    <div className="flex h-full min-h-[15rem] flex-col rounded-[22px] border border-slate-200/80 bg-[linear-gradient(180deg,rgba(255,255,255,0.98),rgba(248,250,252,0.96))] p-3 shadow-sm dark:border-slate-700/70 dark:bg-[linear-gradient(180deg,rgba(15,23,42,0.96),rgba(15,23,42,0.98))]">
+      <div className="flex flex-wrap items-center justify-between gap-2 border-b border-slate-200/70 pb-2 dark:border-slate-700/60">
+        <div className="text-[11px] font-semibold uppercase tracking-[0.14em] text-slate-400">
+          Overall Utilization
+        </div>
+
+        {activeRow ? (
+          <div className="min-w-0 text-right">
+            <div className={`truncate text-sm font-semibold ${utilizationTextTone(activeRow.utilizationPct)}`}>
+              {activeRow.label} · {activeRow.utilizationPct}%
+            </div>
+            <div className="truncate text-[11px] text-slate-500 dark:text-slate-400">
+              {formatHours(activeRow.bookedHours)}h / {formatHours(activeRow.capacityHours)}h
+            </div>
+          </div>
+        ) : null}
+      </div>
+
+      <div className="mt-3 flex min-h-[12rem] flex-1 gap-2">
+        <div className="flex w-8 shrink-0 flex-col justify-between pb-6 text-right text-[9px] font-medium text-slate-400">
+          {[...tickValues].reverse().map((tick) => (
+            <span key={tick}>{tick}%</span>
+          ))}
+        </div>
+
+        <div className="relative min-w-0 flex-1">
+          <div className="pointer-events-none absolute inset-0 bottom-6">
+            {[...tickValues].reverse().map((tick) => {
+              const bottom = (tick / chartMaxPct) * 100;
+              return (
+                <div
+                  key={tick}
+                  className="absolute left-0 right-0 border-t border-dashed border-slate-200/80 dark:border-slate-700/50"
+                  style={{ bottom: `${bottom}%` }}
+                />
+              );
+            })}
+
+            <div
+              className="absolute left-0 right-0 border-t border-slate-300/90 dark:border-slate-500/80"
+              style={{ bottom: `${referenceLineBottom}%` }}
+            />
+          </div>
+
+          <div
+            className="grid h-full items-end gap-1.5 pb-6 sm:gap-2"
+            style={{ gridTemplateColumns: `repeat(${rows.length}, minmax(0, 1fr))` }}
+          >
+            {rows.map((row) => {
+              const height = Math.min((row.utilizationPct / chartMaxPct) * 100, 100);
+              const isActive = row.period === activePeriod;
+              const isPinned = row.period === fallbackPeriod;
+
+              return (
+                <button
+                  key={row.period}
+                  type="button"
+                  className="group flex h-full min-w-0 flex-col items-center rounded-2xl px-1 text-left transition-colors"
+                  title={`${row.label}: ${row.utilizationPct}% utilization, ${formatHours(row.bookedHours)}h booked, ${formatHours(row.capacityHours)}h capacity, ${formatHours(row.remainingHours)}h free, ${formatHours(row.overbookedHours)}h overbooked`}
+                  onMouseEnter={() => setHoveredPeriod(row.period)}
+                  onMouseLeave={() => setHoveredPeriod((current) => (current === row.period ? null : current))}
+                  onClick={() => onSelectedPeriodChange?.(row.period)}
+                  style={{
+                    backgroundColor: isPinned
+                      ? "rgba(14, 165, 233, 0.08)"
+                      : isActive
+                        ? "rgba(148, 163, 184, 0.08)"
+                        : "transparent",
+                  }}
+                >
+                  <div className="relative flex min-h-0 flex-1 w-full items-end justify-center px-0.5">
+                    <div className="relative h-full w-full max-w-[34px] sm:max-w-[42px]">
+                      <div className="absolute inset-x-0 bottom-0 h-full rounded-t-xl bg-slate-100 dark:bg-slate-800/80" />
+                      <div
+                        className={`absolute inset-x-0 bottom-0 rounded-t-xl transition-all duration-150 ${utilizationBarTone(row.utilizationPct)} ${
+                          isActive ? "opacity-100" : "opacity-80 group-hover:opacity-100"
+                        }`}
+                        style={{ height: `${Math.max(height, row.utilizationPct > 0 ? 6 : 0)}%` }}
+                      />
+                    </div>
+                  </div>
+
+                  <div className="mt-2 min-w-0 shrink-0">
+                    <div className="truncate text-center text-[10px] font-semibold uppercase tracking-[0.08em] text-slate-500 dark:text-slate-400">
+                      {row.label}
+                    </div>
+                  </div>
+                </button>
+              );
+            })}
+          </div>
+        </div>
+      </div>
+    </div>
   );
 }
diff --git a/apps/web/src/components/dashboard/widgets/PeakTimesWidget.tsx b/apps/web/src/components/dashboard/widgets/PeakTimesWidget.tsx
index 15b971d..7bc9407 100644
--- a/apps/web/src/components/dashboard/widgets/PeakTimesWidget.tsx
+++ b/apps/web/src/components/dashboard/widgets/PeakTimesWidget.tsx
@@ -1,5 +1,6 @@
 "use client";
 
+import { useMemo } from "react";
 import dynamic from "next/dynamic";
 import { trpc } from "~/lib/trpc/client.js";
 import type { WidgetProps } from "~/components/dashboard/widget-registry.js";
@@ -10,84 +11,249 @@ const PeakTimesChart = dynamic(
   { ssr: false, loading: () => <div className="flex-1 shimmer-skeleton rounded-xl" /> },
 );
 
-export function PeakTimesWidget({ config, onConfigChange }: WidgetProps) {
-  const granularity = (config.granularity as "week" | "month") || "month";
-  const groupBy = (config.groupBy as "project" | "chapter" | "resource") || "project";
+type PeakDepartmentRow = {
+  name: string;
+  hours: number;
+  capacityHours: number;
+  remainingHours: number;
+  overbookedHours: number;
+  utilizationPct: number;
+};
 
+type PeakPeriodRow = {
+  period: string;
+  label: string;
+  bookedHours: number;
+  capacityHours: number;
+  remainingHours: number;
+  overbookedHours: number;
+  utilizationPct: number;
+  isCurrentPeriod: boolean;
+  groups: PeakDepartmentRow[];
+};
+
+function formatHours(value: number): string {
+  return new Intl.NumberFormat("de-DE", {
+    minimumFractionDigits: 0,
+    maximumFractionDigits: 1,
+  }).format(value);
+}
+
+function formatMonthLabel(periodStart: string | undefined, fallback: string): string {
+  if (!periodStart) {
+    return fallback;
+  }
+
+  const date = new Date(`${periodStart}T00:00:00.000Z`);
+  if (Number.isNaN(date.getTime())) {
+    return fallback;
+  }
+
+  return new Intl.DateTimeFormat("en-US", {
+    month: "short",
+    year: "2-digit",
+    timeZone: "UTC",
+  }).format(date);
+}
+
+function utilizationTone(utilizationPct: number): string {
+  if (utilizationPct >= 100) return "bg-red-500";
+  if (utilizationPct >= 85) return "bg-amber-400";
+  return "bg-emerald-500";
+}
+
+function utilizationTextTone(utilizationPct: number): string {
+  if (utilizationPct >= 100) return "text-red-600 dark:text-red-300";
+  if (utilizationPct >= 85) return "text-amber-600 dark:text-amber-300";
+  return "text-emerald-600 dark:text-emerald-300";
+}
+
+function aggregateDepartmentRows(rows: PeakDepartmentRow[], limit = 6): PeakDepartmentRow[] {
+  if (rows.length <= limit) {
+    return rows;
+  }
+
+  const visibleRows = rows.slice(0, limit - 1);
+  const hiddenRows = rows.slice(limit - 1);
+  const hiddenHours = hiddenRows.reduce((sum, row) => sum + row.hours, 0);
+  const hiddenCapacityHours = hiddenRows.reduce((sum, row) => sum + row.capacityHours, 0);
+  const hiddenRemainingHours = hiddenRows.reduce((sum, row) => sum + row.remainingHours, 0);
+  const hiddenOverbookedHours = hiddenRows.reduce((sum, row) => sum + row.overbookedHours, 0);
+
+  return [
+    ...visibleRows,
+    {
+      name: `Other (${hiddenRows.length})`,
+      hours: hiddenHours,
+      capacityHours: hiddenCapacityHours,
+      remainingHours: hiddenRemainingHours,
+      overbookedHours: hiddenOverbookedHours,
+      utilizationPct:
+        hiddenCapacityHours > 0 ? Math.round((hiddenHours / hiddenCapacityHours) * 100) : 0,
+    },
+  ];
+}
+
+export function PeakTimesWidget({ config, onConfigChange }: WidgetProps) {
   const now = new Date();
-  const startDate = new Date(now.getFullYear(), now.getMonth() - 2, 1).toISOString();
-  const endDate = new Date(now.getFullYear(), now.getMonth() + 6, 0).toISOString();
+  const startDate = new Date(Date.UTC(now.getUTCFullYear(), now.getUTCMonth(), 1)).toISOString();
+  const endDate = new Date(
+    Date.UTC(now.getUTCFullYear(), now.getUTCMonth() + 12, 0, 23, 59, 59, 999),
+  ).toISOString();
+  const currentPeriodKey = `${now.getUTCFullYear()}-${String(now.getUTCMonth() + 1).padStart(2, "0")}`;
+  const persistedPeriod = typeof config.activePeriod === "string" ? config.activePeriod : null;
 
   const { data, isLoading } = trpc.dashboard.getPeakTimes.useQuery(
-    { startDate, endDate, granularity, groupBy },
+    { startDate, endDate, granularity: "month", groupBy: "chapter" },
     { staleTime: 120_000, placeholderData: (prev) => prev },
   );
 
-  if (isLoading) {
+  const periods = useMemo<PeakPeriodRow[]>(
+    () =>
+      (data ?? []).map((period) => {
+        const derivation = period.derivation;
+        const bookedHours = period.bookedHours ?? derivation.bookedHours ?? period.totalHours;
+        const capacityHours = period.capacityHours ?? derivation.capacityHours ?? 0;
+        const remainingHours =
+          period.remainingHours ??
+          derivation.remainingCapacityHours ??
+          Math.max(capacityHours - bookedHours, 0);
+        const overbookedHours =
+          period.overbookedHours ??
+          derivation.overbookedHours ??
+          Math.max(bookedHours - capacityHours, 0);
+        const utilizationPct =
+          period.utilizationPct ??
+          derivation.utilizationPct ??
+          (capacityHours > 0 ? Math.round((bookedHours / capacityHours) * 100) : 0);
+
+        return {
+          period: period.period,
+          label: formatMonthLabel(period.periodStart ?? derivation.periodStart, period.period),
+          bookedHours,
+          capacityHours,
+          remainingHours,
+          overbookedHours,
+          utilizationPct,
+          isCurrentPeriod: period.period === currentPeriodKey,
+          groups: (period.groups ?? [])
+            .map((group) => {
+              const groupCapacityHours = group.capacityHours ?? 0;
+              const groupRemainingHours =
+                group.remainingHours ?? Math.max(groupCapacityHours - group.hours, 0);
+              const groupOverbookedHours =
+                group.overbookedHours ?? Math.max(group.hours - groupCapacityHours, 0);
+              const groupUtilizationPct =
+                group.utilizationPct ??
+                (groupCapacityHours > 0 ? Math.round((group.hours / groupCapacityHours) * 100) : 0);
+
+              return {
+                name: group.name,
+                hours: group.hours,
+                capacityHours: groupCapacityHours,
+                remainingHours: groupRemainingHours,
+                overbookedHours: groupOverbookedHours,
+                utilizationPct: groupUtilizationPct,
+              };
+            })
+            .sort(
+              (left, right) =>
+                right.utilizationPct - left.utilizationPct ||
+                right.hours - left.hours ||
+                left.name.localeCompare(right.name),
+            ),
+        };
+      }),
+    [currentPeriodKey, data],
+  );
+
+  const selectedPeriod =
+    (persistedPeriod && periods.some((period) => period.period === persistedPeriod) ? persistedPeriod : null) ??
+    (periods.some((period) => period.period === currentPeriodKey) ? currentPeriodKey : periods[0]?.period ?? null);
+
+  const selectedPeriodRow =
+    periods.find((period) => period.period === selectedPeriod) ?? periods[0] ?? null;
+  const currentPeriodRow =
+    periods.find((period) => period.period === currentPeriodKey) ?? selectedPeriodRow;
+  const peakPeriodRow = useMemo(
+    () =>
+      [...periods].sort(
+        (left, right) =>
+          right.utilizationPct - left.utilizationPct || right.bookedHours - left.bookedHours,
+      )[0] ?? null,
+    [periods],
+  );
+  const departmentRows = useMemo(
+    () => aggregateDepartmentRows(selectedPeriodRow?.groups ?? []),
+    [selectedPeriodRow],
+  );
+
+  if (isLoading && periods.length === 0) {
     return (
-      <div className="flex flex-col gap-3 h-full pt-2">
-        <div className="flex gap-2">
-          <div className="h-7 w-28 shimmer-skeleton rounded-lg" />
-          <div className="h-7 w-28 shimmer-skeleton rounded-lg" />
-        </div>
-        <div className="flex items-end gap-1 flex-1 px-2">
-          {[...Array(12)].map((_, i) => (
-            <div
-              key={i}
-              className="flex-1 shimmer-skeleton rounded-t"
-              style={{ height: `${30 + Math.random() * 50}%` }}
-            />
+      <div className="flex h-full flex-col gap-3 pt-2">
+        <div className="grid grid-cols-3 gap-2">
+          {[...Array(3)].map((_, index) => (
+            <div key={index} className="h-14 rounded-2xl shimmer-skeleton" />
           ))}
         </div>
+        <div className="flex-1 rounded-[22px] shimmer-skeleton" />
+        <div className="h-32 rounded-[22px] shimmer-skeleton" />
       </div>
     );
   }
 
-  const periods = data ?? [];
-
-  // Collect all group names
-  const allGroups = new Set<string>();
-  for (const p of periods) {
-    for (const g of p.groups) allGroups.add(g.name);
-  }
-  const groups = [...allGroups].slice(0, 10);
-
-  // Build recharts data
-  const chartData = periods.map((p) => {
-    const row: Record<string, number | string> = { period: p.period, capacity: p.capacityHours };
-    for (const g of p.groups) {
-      row[g.name] = g.hours;
-    }
-    return row;
-  });
-
   return (
-    <div className="flex flex-col h-full gap-3">
-      {/* Controls + info */}
-      <div className="flex gap-2 items-center">
-        <select
-          value={granularity}
-          onChange={(e) => onConfigChange?.({ granularity: e.target.value })}
-          className="px-2 py-1 text-xs border border-gray-300 rounded-lg bg-white"
-        >
-          <option value="month">Monthly</option>
-          <option value="week">Weekly</option>
-        </select>
-        <select
-          value={groupBy}
-          onChange={(e) => onConfigChange?.({ groupBy: e.target.value })}
-          className="px-2 py-1 text-xs border border-gray-300 rounded-lg bg-white"
-        >
-          <option value="project">By Project</option>
-          <option value="chapter">By Chapter</option>
-          <option value="resource">By Resource</option>
-        </select>
+    <div className="flex h-full flex-col gap-2 overflow-hidden">
+      <div className="flex items-center justify-between gap-3">
+        <div className="grid min-w-0 flex-1 grid-cols-3 gap-2">
+          <div className="rounded-2xl border border-slate-200/80 bg-white/80 px-3 py-2 shadow-sm dark:border-slate-700/70 dark:bg-slate-900/60">
+            <div className="text-[10px] font-semibold uppercase tracking-[0.14em] text-slate-400">
+              Current
+            </div>
+            <div className="mt-0.5 flex items-baseline justify-between gap-3">
+              <span className={`text-base font-semibold ${utilizationTextTone(currentPeriodRow?.utilizationPct ?? 0)}`}>
+                {currentPeriodRow?.utilizationPct ?? 0}%
+              </span>
+              <span className="truncate text-[11px] text-slate-500 dark:text-slate-400">
+                {currentPeriodRow?.label ?? "No data"}
+              </span>
+            </div>
+          </div>
+
+          <div className="rounded-2xl border border-slate-200/80 bg-white/80 px-3 py-2 shadow-sm dark:border-slate-700/70 dark:bg-slate-900/60">
+            <div className="text-[10px] font-semibold uppercase tracking-[0.14em] text-slate-400">
+              Selected
+            </div>
+            <div className="mt-0.5 flex items-baseline justify-between gap-3">
+              <span className={`text-base font-semibold ${utilizationTextTone(selectedPeriodRow?.utilizationPct ?? 0)}`}>
+                {selectedPeriodRow?.utilizationPct ?? 0}%
+              </span>
+              <span className="truncate text-[11px] text-slate-500 dark:text-slate-400">
+                {selectedPeriodRow?.label ?? "Hover or pin"}
+              </span>
+            </div>
+          </div>
+
+          <div className="rounded-2xl border border-slate-200/80 bg-white/80 px-3 py-2 shadow-sm dark:border-slate-700/70 dark:bg-slate-900/60">
+            <div className="text-[10px] font-semibold uppercase tracking-[0.14em] text-slate-400">
+              Peak
+            </div>
+            <div className="mt-0.5 flex items-baseline justify-between gap-3">
+              <span className={`text-base font-semibold ${utilizationTextTone(peakPeriodRow?.utilizationPct ?? 0)}`}>
+                {peakPeriodRow?.utilizationPct ?? 0}%
+              </span>
+              <span className="truncate text-[11px] text-slate-500 dark:text-slate-400">
+                {peakPeriodRow?.label ?? "No data"}
+              </span>
+            </div>
+          </div>
+        </div>
         <InfoTooltip
           content={
             <span>
-              Stacked bars = booked hours per group per period (last 2 months to next 6 months).<br />
-              Red dashed line = total capacity estimate (all active resources × available hours per day × working days).<br />
-              Bars exceeding the capacity line indicate over-allocation risk.
+              The top chart shows total booked load against effective capacity.<br />
+              The current month is marked with a blue accent.<br />
+              Hover any month to inspect details and click to pin the department breakdown.
             </span>
           }
           width="w-80"
@@ -95,9 +261,72 @@ export function PeakTimesWidget({ config, onConfigChange }: WidgetProps) {
         />
       </div>
 
-      {/* Chart */}
-      <div className="flex-1 min-h-0">
-        <PeakTimesChart chartData={chartData} groups={groups} />
+      <div className="min-h-0 flex-1 lg:grid lg:grid-cols-[minmax(0,1.85fr)_minmax(18rem,0.95fr)] lg:gap-3">
+        <div className="min-h-0">
+          <PeakTimesChart
+            rows={periods}
+            selectedPeriod={selectedPeriod}
+            onSelectedPeriodChange={(period) => onConfigChange?.({ activePeriod: period })}
+          />
+        </div>
+
+        <div className="mt-2 min-h-0 lg:mt-0">
+          <div className="flex h-full flex-col rounded-[22px] border border-slate-200/80 bg-[linear-gradient(180deg,rgba(255,255,255,0.98),rgba(248,250,252,0.96))] p-3 shadow-sm dark:border-slate-700/70 dark:bg-[linear-gradient(180deg,rgba(15,23,42,0.96),rgba(15,23,42,0.98))]">
+            <div className="flex flex-wrap items-start justify-between gap-2 border-b border-slate-200/70 pb-2 dark:border-slate-700/60">
+              <div>
+                <div className="text-[11px] font-semibold uppercase tracking-[0.14em] text-slate-400">
+                  Department Utilization
+                </div>
+                <div className="text-xs text-slate-500 dark:text-slate-400">
+                  {selectedPeriodRow?.label ?? "No active month"}
+                </div>
+              </div>
+              <div className="text-right text-[11px] text-slate-500 dark:text-slate-400">
+                <div>{selectedPeriodRow ? `${formatHours(selectedPeriodRow.bookedHours)}h booked` : "No load"}</div>
+                <div>{selectedPeriodRow ? `${formatHours(selectedPeriodRow.capacityHours)}h capacity` : ""}</div>
+              </div>
+            </div>
+
+            <div className="mt-3 min-h-0 flex-1 space-y-2 overflow-auto pr-1">
+              {departmentRows.length > 0 ? (
+                departmentRows.map((group) => {
+                  const barWidth = Math.min(group.utilizationPct, 100);
+                  return (
+                    <div key={group.name} className="space-y-1">
+                      <div className="flex items-center justify-between gap-3">
+                        <div className="min-w-0 truncate text-xs font-medium text-slate-700 dark:text-slate-200">
+                          {group.name}
+                        </div>
+                        <div className={`shrink-0 text-[11px] font-semibold ${utilizationTextTone(group.utilizationPct)}`}>
+                          {group.utilizationPct}%
+                        </div>
+                      </div>
+                      <div
+                        className="relative h-2.5 overflow-visible rounded-full bg-slate-100 dark:bg-slate-800/80"
+                        title={`${group.name}: ${group.utilizationPct}% utilization, ${formatHours(group.hours)}h booked, ${formatHours(group.capacityHours)}h capacity, ${formatHours(group.remainingHours)}h free, ${formatHours(group.overbookedHours)}h overbooked`}
+                      >
+                        <div
+                          className={`h-full rounded-full ${utilizationTone(group.utilizationPct)}`}
+                          style={{ width: `${barWidth}%` }}
+                        />
+                        {group.overbookedHours > 0 ? (
+                          <div
+                            className="absolute right-0 top-0 h-full rounded-full bg-red-600/85"
+                            style={{ width: `${Math.min(22, Math.max(8, group.utilizationPct - 100))}%` }}
+                          />
+                        ) : null}
+                      </div>
+                    </div>
+                  );
+                })
+              ) : (
+                <div className="rounded-2xl border border-dashed border-slate-200 bg-slate-50/80 px-3 py-4 text-sm text-slate-400 dark:border-slate-700 dark:bg-slate-900/40">
+                  No department data in the selected month.
+                </div>
+              )}
+            </div>
+          </div>
+        </div>
       </div>
     </div>
   );
diff --git a/apps/web/src/components/dashboard/widgets/ProjectHealthWidget.tsx b/apps/web/src/components/dashboard/widgets/ProjectHealthWidget.tsx
index ec0efae..fdc73c9 100644
--- a/apps/web/src/components/dashboard/widgets/ProjectHealthWidget.tsx
+++ b/apps/web/src/components/dashboard/widgets/ProjectHealthWidget.tsx
@@ -8,6 +8,7 @@ import { InfoTooltip } from "~/components/ui/InfoTooltip.js";
 import { ShoringBadge } from "~/components/projects/ShoringIndicator.js";
 import { WidgetFilterBar, type WidgetFilter } from "~/components/dashboard/WidgetFilterBar.js";
 import { useWidgetFilterOptions } from "~/hooks/useWidgetFilterOptions.js";
+import { formatMoney } from "~/lib/format.js";
 
 function healthDot(value: number): string {
   if (value >= 70) return "bg-green-500";
@@ -21,7 +22,55 @@ function scoreBadge(score: number): string {
   return "bg-red-100 text-red-700 dark:bg-red-900/40 dark:text-red-300";
 }
 
+function formatShortDate(value?: string | Date | null): string {
+  if (!value) {
+    return "No end date";
+  }
+
+  const date = value instanceof Date ? value : new Date(value);
+  if (Number.isNaN(date.getTime())) {
+    return "No end date";
+  }
+
+  return new Intl.DateTimeFormat("de-DE", {
+    day: "2-digit",
+    month: "2-digit",
+    year: "numeric",
+  }).format(date);
+}
+
+function formatTimeline(daysUntilEndDate?: number | null, timelineStatus?: string | null): string {
+  if (timelineStatus === "UNSCHEDULED" || daysUntilEndDate == null) {
+    return "No end date";
+  }
+
+  if (daysUntilEndDate < 0) {
+    return `${Math.abs(daysUntilEndDate)} days overdue`;
+  }
+
+  if (daysUntilEndDate === 0) {
+    return "Due today";
+  }
+
+  return `${daysUntilEndDate} days left`;
+}
+
+function formatLocation(location: {
+  countryCode?: string | null;
+  countryName?: string | null;
+  federalState?: string | null;
+  metroCityName?: string | null;
+}): string {
+  const parts = [
+    location.countryCode ?? location.countryName ?? null,
+    location.federalState ?? null,
+    location.metroCityName ?? null,
+  ].filter((part): part is string => Boolean(part));
+  return parts.length > 0 ? parts.join(" / ") : "No calendar context";
+}
+
 export function ProjectHealthWidget({ config, onConfigChange }: WidgetProps) {
+  const showDetails = config.showDetails === true;
   const { clients } = useWidgetFilterOptions();
 
   const filters = useMemo<WidgetFilter[]>(
@@ -87,10 +136,10 @@ export function ProjectHealthWidget({ config, onConfigChange }: WidgetProps) {
           <thead className="bg-gray-50 dark:bg-gray-800/50 sticky top-0">
             <tr>
               <th className="px-3 py-2 text-left font-medium text-gray-500 dark:text-gray-400">
-                Project <InfoTooltip content="Active projects scored across three health dimensions" />
+                Project <InfoTooltip content="Active projects scored across three health dimensions including visible budget, staffing, and timeline basis." />
               </th>
               <th className="px-3 py-2 text-center font-medium text-gray-500 dark:text-gray-400">
-                B / S / T <InfoTooltip content="Budget health (spent vs budget), Staffing health (filled vs total demands), Timeline health (within end date)" />
+                B / S / T <InfoTooltip content="Budget health (spent vs budget), Staffing health (filled vs total demanded headcount), Timeline health (end date and remaining horizon)." />
               </th>
               <th className="px-3 py-2 text-center font-medium text-gray-500 dark:text-gray-400">
                 Shoring <InfoTooltip content="Offshore staffing ratio: percentage of hours from non-onshore resources. Color indicates threshold status." />
@@ -103,26 +152,66 @@ export function ProjectHealthWidget({ config, onConfigChange }: WidgetProps) {
           <tbody className="divide-y divide-gray-100 dark:divide-gray-800">
             {rows.map((row) => (
               <tr key={row.shortCode} className="hover:bg-gray-50 dark:hover:bg-gray-800/30">
-                <td className="px-3 py-2 font-medium text-gray-900 dark:text-gray-100 max-w-[160px] truncate">
-                  <Link href={`/projects/${(row as any).id}`} className="hover:text-brand-600 dark:hover:text-brand-400 transition-colors">
-                    <span className="font-mono text-gray-500 dark:text-gray-400 mr-1">{row.shortCode}</span>
-                    {row.projectName}
+                <td className="px-3 py-2 text-gray-900 dark:text-gray-100 max-w-[320px]">
+                  <Link href={`/projects/${(row as any).id}`} className="block hover:text-brand-600 dark:hover:text-brand-400 transition-colors">
+                    <div className="truncate font-medium">
+                      <span className="font-mono text-gray-500 dark:text-gray-400 mr-1">{row.shortCode}</span>
+                      {row.projectName}
+                    </div>
                   </Link>
+                  {showDetails ? (
+                    <div className="mt-1 space-y-0.5 text-[11px] leading-4 text-gray-500 dark:text-gray-400">
+                      <div>
+                        Budget: {formatMoney(row.spentCents ?? 0)} spent
+                        {row.budgetCents != null ? ` / ${formatMoney(row.budgetCents)} budget` : " / no budget"}
+                        {row.remainingBudgetCents != null ? ` / ${formatMoney(row.remainingBudgetCents)} remaining` : ""}
+                      </div>
+                      <div>
+                        Staffing: {row.demandHeadcountFilled ?? 0}/{row.demandHeadcountTotal ?? 0} HC
+                        {typeof row.demandHeadcountOpen === "number" ? `, ${row.demandHeadcountOpen} open` : ""}
+                        {typeof row.demandRequirementCount === "number" ? ` across ${row.demandRequirementCount} demands` : ""}
+                      </div>
+                      <div>
+                        Timeline: {formatShortDate(row.plannedEndDate)} · {formatTimeline(row.daysUntilEndDate, row.timelineStatus)}
+                      </div>
+                      {(row.calendarLocations ?? []).length > 0 ? (
+                        <div>
+                          Calendar basis: {(row.calendarLocations ?? [])
+                            .slice(0, 2)
+                            .map((location) => `${formatLocation(location)} (${formatMoney(location.spentCents)} / ${location.assignmentCount} assign.)`)
+                            .join(" · ")}
+                          {(row.calendarLocations ?? []).length > 2
+                            ? ` · +${(row.calendarLocations ?? []).length - 2} more`
+                            : ""}
+                        </div>
+                      ) : null}
+                    </div>
+                  ) : null}
                 </td>
                 <td className="px-3 py-2">
-                  <div className="flex items-center justify-center gap-2">
-                    <span
-                      className={`inline-block w-3 h-3 rounded-full ${healthDot(row.budgetHealth)}`}
-                      title={`Budget: ${row.budgetHealth}%`}
-                    />
-                    <span
-                      className={`inline-block w-3 h-3 rounded-full ${healthDot(row.staffingHealth)}`}
-                      title={`Staffing: ${row.staffingHealth}%`}
-                    />
-                    <span
-                      className={`inline-block w-3 h-3 rounded-full ${healthDot(row.timelineHealth)}`}
-                      title={`Timeline: ${row.timelineHealth}%`}
-                    />
+                  <div className="flex flex-col items-center justify-center gap-1 text-[11px] text-gray-500 dark:text-gray-400">
+                    <div className="flex items-center justify-center gap-2">
+                      <span
+                        className={`inline-block w-3 h-3 rounded-full ${healthDot(row.budgetHealth)}`}
+                        title={`Budget: ${row.budgetHealth}%`}
+                      />
+                      <span
+                        className={`inline-block w-3 h-3 rounded-full ${healthDot(row.staffingHealth)}`}
+                        title={`Staffing: ${row.staffingHealth}%`}
+                      />
+                      <span
+                        className={`inline-block w-3 h-3 rounded-full ${healthDot(row.timelineHealth)}`}
+                        title={`Timeline: ${row.timelineHealth}%`}
+                      />
+                    </div>
+                    <div className="text-center tabular-nums">
+                      B {row.budgetUtilizationPercent ?? 0}% used
+                    </div>
+                    {showDetails ? (
+                      <div className="text-center tabular-nums">
+                        S {row.demandHeadcountFilled ?? 0}/{row.demandHeadcountTotal ?? 0} · T {formatTimeline(row.daysUntilEndDate, row.timelineStatus)}
+                      </div>
+                    ) : null}
                   </div>
                 </td>
                 <td className="px-3 py-2 text-center">
diff --git a/apps/web/src/components/dashboard/widgets/StatCardsWidget.tsx b/apps/web/src/components/dashboard/widgets/StatCardsWidget.tsx
index beab32b..1ad8163 100644
--- a/apps/web/src/components/dashboard/widgets/StatCardsWidget.tsx
+++ b/apps/web/src/components/dashboard/widgets/StatCardsWidget.tsx
@@ -19,6 +19,8 @@ function StatCard({
   value,
   suffix,
   sub,
+  details,
+  showDetails = false,
   info,
   accentColor,
   delay = 0,
@@ -28,6 +30,8 @@ function StatCard({
   value: number;
   suffix?: string;
   sub?: string;
+  details?: string[];
+  showDetails?: boolean;
   info?: React.ReactNode;
   accentColor?: "green" | "amber" | "red";
   delay?: number;
@@ -66,13 +70,37 @@ function StatCard({
           </div>
         )}
         {sub && <p className="mt-0.5 text-xs text-gray-400 dark:text-gray-500">{sub}</p>}
+        {showDetails && details && details.length > 0 ? (
+          <div className="mt-2 space-y-1 text-[11px] leading-4 text-gray-500 dark:text-gray-400">
+            {details.map((detail) => (
+              <p key={detail}>{detail}</p>
+            ))}
+          </div>
+        ) : null}
       </div>
     </FadeIn>
   );
 }
 
-// eslint-disable-next-line @typescript-eslint/no-unused-vars
-export function StatCardsWidget(_props: Partial<WidgetProps> = {}) {
+function formatShortDate(value?: string | Date | null): string {
+  if (!value) {
+    return "n/a";
+  }
+
+  const date = value instanceof Date ? value : new Date(value);
+  if (Number.isNaN(date.getTime())) {
+    return "n/a";
+  }
+
+  return new Intl.DateTimeFormat("de-DE", {
+    day: "2-digit",
+    month: "2-digit",
+    year: "numeric",
+  }).format(date);
+}
+
+export function StatCardsWidget(props: Partial<WidgetProps> = {}) {
+  const showDetails = props.config?.showDetails === true;
   const { data, isLoading } = trpc.dashboard.getOverview.useQuery(undefined, {
     staleTime: 60_000,
     placeholderData: (prev) => prev,
@@ -104,21 +132,33 @@ export function StatCardsWidget(_props: Partial<WidgetProps> = {}) {
       <StatCard
         label="Total Resources"
         value={data.totalResources}
-        sub={`${data.activeResources} active`}
-        info="All resources in the system. Sub-line shows active resources only."
+        sub={`${data.activeResources} active / ${data.inactiveResources ?? Math.max(data.totalResources - data.activeResources, 0)} inactive`}
+        details={[
+          "Basis: all resource master records",
+        ]}
+        showDetails={showDetails}
+        info="All resources in the system. Sub-line shows active versus inactive records."
         delay={0}
       />
       <StatCard
         label="Active Projects"
         value={data.activeProjects}
-        sub={`${data.totalProjects} total`}
+        sub={`${data.totalProjects} total / ${data.inactiveProjects ?? Math.max(data.totalProjects - data.activeProjects, 0)} non-active`}
+        details={[
+          "Basis: project status on the dashboard snapshot",
+        ]}
+        showDetails={showDetails}
         info="Projects with status ACTIVE. Total includes all statuses (DRAFT, ON_HOLD, COMPLETED, CANCELLED)."
         delay={0.05}
       />
       <StatCard
         label="Total Allocations"
         value={data.totalAllocations}
-        sub={`${data.activeAllocations} not cancelled`}
+        sub={`${data.activeAllocations} not cancelled / ${data.cancelledAllocations ?? Math.max(data.totalAllocations - data.activeAllocations, 0)} cancelled`}
+        details={[
+          "Basis: split allocation read model across explicit and legacy rows",
+        ]}
+        showDetails={showDetails}
         info="All allocation records ever created. 'Not cancelled' excludes allocations with status CANCELLED."
         delay={0.1}
       />
@@ -127,7 +167,13 @@ export function StatCardsWidget(_props: Partial<WidgetProps> = {}) {
         value={budgetPct}
         suffix="%"
         sub={`${formatMoney(data.budgetSummary.totalCostCents)} of ${formatMoney(data.budgetSummary.totalBudgetCents)}`}
-        info="Sum of costs across non-cancelled allocations divided by total project budgets. Cost = resource LCR × booked hours."
+        details={[
+          `Remaining: ${formatMoney(data.budgetBasis?.remainingBudgetCents ?? (data.budgetSummary.totalBudgetCents - data.budgetSummary.totalCostCents))}`,
+          `Basis: ${data.budgetBasis?.trackedAssignmentCount ?? 0} non-cancelled assignments across ${data.budgetBasis?.budgetedProjects ?? 0} budgeted projects`,
+          `Window: ${formatShortDate(data.budgetBasis?.windowStart)} - ${formatShortDate(data.budgetBasis?.windowEnd)}`,
+        ]}
+        showDetails={showDetails}
+        info="Sum of costs across non-cancelled allocations divided by total project budgets. Cost uses the effective allocation cost basis including holiday-adjusted working capacity where available."
         accentColor={budgetAccent}
         delay={0.15}
         ring={{ value: budgetPct, color: ACCENT_COLORS[budgetAccent] }}
diff --git a/apps/web/src/components/layout/AppShell.tsx b/apps/web/src/components/layout/AppShell.tsx
index b59989d..da31a9d 100644
--- a/apps/web/src/components/layout/AppShell.tsx
+++ b/apps/web/src/components/layout/AppShell.tsx
@@ -231,6 +231,7 @@ const adminNavEntries: AdminEntry[] = [
     ],
   },
   { href: "/admin/calculation-rules", label: "Calc. Rules", icon: <CalcRulesIcon /> },
+  { href: "/admin/vacations", label: "Vacations & Holidays", icon: <VacationIcon /> },
   { href: "/admin/users", label: "Users", icon: <UsersIcon /> },
   { href: "/admin/system-roles", label: "System Roles", icon: <SystemRolesIcon /> },
   { href: "/admin/settings", label: "Settings", icon: <SettingsIcon /> },
diff --git a/apps/web/src/components/notifications/NotificationBell.tsx b/apps/web/src/components/notifications/NotificationBell.tsx
index 9c37753..f45597d 100644
--- a/apps/web/src/components/notifications/NotificationBell.tsx
+++ b/apps/web/src/components/notifications/NotificationBell.tsx
@@ -1,11 +1,12 @@
 "use client";
 
-import { useCallback, useEffect, useRef, useState } from "react";
+import { useEffect, useRef, useState } from "react";
 import { createPortal } from "react-dom";
 import { useSession } from "next-auth/react";
 import Link from "next/link";
 import type { Route } from "next";
 import { motion, useAnimationControls } from "framer-motion";
+import { useAnchoredOverlay } from "~/hooks/useAnchoredOverlay.js";
 import { trpc } from "~/lib/trpc/client.js";
 
 function relativeTime(date: Date): string {
@@ -28,12 +29,16 @@ type TabKey = "all" | "tasks" | "reminders";
 export function NotificationBell() {
   const [open, setOpen] = useState(false);
   const [activeTab, setActiveTab] = useState<TabKey>("all");
-  const ref = useRef<HTMLDivElement>(null);
   const bellRef = useRef<HTMLButtonElement>(null);
-  const dropdownRef = useRef<HTMLDivElement>(null);
-  const [dropdownPos, setDropdownPos] = useState<{ top: number; left: number }>({ top: 0, left: 0 });
   const { data: session, status } = useSession();
   const isAuthenticated = status === "authenticated" && !!session?.user?.email;
+  const { panelRef, position, handleOpenChange } = useAnchoredOverlay<HTMLButtonElement>({
+    open,
+    onClose: () => setOpen(false),
+    side: "right",
+    crossAlign: "start",
+    triggerRef: bellRef,
+  });
 
   const badgeControls = useAnimationControls();
   const prevUnreadRef = useRef<number | null>(null);
@@ -96,39 +101,6 @@ export function NotificationBell() {
     },
   });
 
-  // Compute dropdown position when opening
-  const updatePosition = useCallback(() => {
-    if (!bellRef.current) return;
-    const rect = bellRef.current.getBoundingClientRect();
-    const panelHeight = 440; // approximate max height
-    let top = rect.top;
-    // If it would overflow the bottom, flip upward
-    if (top + panelHeight > window.innerHeight) {
-      top = Math.max(8, window.innerHeight - panelHeight - 8);
-    }
-    setDropdownPos({ top, left: rect.right + 8 });
-  }, []);
-
-  useEffect(() => {
-    if (open) updatePosition();
-  }, [open, updatePosition]);
-
-  // Close dropdown on outside click
-  useEffect(() => {
-    if (!open) return;
-    function handleClick(e: MouseEvent) {
-      const target = e.target as Node;
-      if (
-        ref.current && !ref.current.contains(target) &&
-        dropdownRef.current && !dropdownRef.current.contains(target)
-      ) {
-        setOpen(false);
-      }
-    }
-    document.addEventListener("mousedown", handleClick);
-    return () => document.removeEventListener("mousedown", handleClick);
-  }, [open]);
-
   function handleMarkAllRead() {
     if (!isAuthenticated) return;
     markRead.mutate({});
@@ -150,12 +122,18 @@ export function NotificationBell() {
   ];
 
   return (
-    <div ref={ref} className="relative">
+    <div className="relative">
       {/* Bell button */}
       <button
         ref={bellRef}
         type="button"
-        onClick={() => setOpen((v) => !v)}
+        onClick={() => {
+          setOpen((current) => {
+            const nextOpen = !current;
+            handleOpenChange(nextOpen);
+            return nextOpen;
+          });
+        }}
         className="relative p-2 text-gray-500 dark:text-gray-400 hover:text-gray-700 dark:hover:text-gray-200 hover:bg-gray-100 dark:hover:bg-gray-800 rounded-lg transition-colors"
         aria-label="Notifications"
       >
@@ -193,12 +171,12 @@ export function NotificationBell() {
       {/* Dropdown panel — rendered via portal to escape sidebar overflow */}
       {open && createPortal(
         <motion.div
-          ref={dropdownRef}
+          ref={panelRef}
           initial={{ opacity: 0, scaleY: 0.95, scaleX: 0.98 }}
           animate={{ opacity: 1, scaleY: 1, scaleX: 1 }}
           transition={{ duration: 0.15, ease: "easeOut" }}
           className="fixed w-96 bg-white dark:bg-gray-900 border border-gray-200 dark:border-gray-700 rounded-xl shadow-lg z-[9999] overflow-hidden origin-top"
-          style={{ top: dropdownPos.top, left: dropdownPos.left }}
+          style={{ top: position.top, left: position.left }}
         >
           {/* Header */}
           <div className="flex items-center justify-between px-4 py-3 border-b border-gray-100 dark:border-gray-800">
diff --git a/apps/web/src/components/reports/ReportBuilder.tsx b/apps/web/src/components/reports/ReportBuilder.tsx
index 83fdccb..46437f9 100644
--- a/apps/web/src/components/reports/ReportBuilder.tsx
+++ b/apps/web/src/components/reports/ReportBuilder.tsx
@@ -7,7 +7,7 @@ import { clsx } from "clsx";
 
 // ─── Types ──────────────────────────────────────────────────────────────────
 
-type EntityType = "resource" | "project" | "assignment";
+type EntityType = "resource" | "project" | "assignment" | "resource_month";
 type FilterOp = "eq" | "neq" | "gt" | "lt" | "gte" | "lte" | "contains" | "in";
 
 interface FilterRow {
@@ -17,10 +17,50 @@ interface FilterRow {
   value: string;
 }
 
+interface AvailableColumn {
+  key: string;
+  label: string;
+  dataType: "string" | "number" | "date" | "boolean";
+}
+
+interface TemplateConfig {
+  entity: EntityType;
+  columns: string[];
+  filters: Omit<FilterRow, "id">[];
+  groupBy?: string;
+  sortBy?: string;
+  sortDir?: "asc" | "desc";
+  periodMonth?: string;
+}
+
+interface ReportTemplateSummary {
+  id: string;
+  name: string;
+  description?: string | null;
+  entity: EntityType;
+  config: TemplateConfig;
+  isShared: boolean;
+  isOwner: boolean;
+  updatedAt: string | Date;
+}
+
+interface ReportBlueprint {
+  id: string;
+  label: string;
+  description: string;
+  entity: EntityType;
+  columns: string[];
+  groupBy?: string;
+  sortBy?: string;
+  sortDir?: "asc" | "desc";
+  templateName: string;
+}
+
 const ENTITY_OPTIONS: { value: EntityType; label: string }[] = [
   { value: "resource", label: "Resources" },
   { value: "project", label: "Projects" },
   { value: "assignment", label: "Assignments" },
+  { value: "resource_month", label: "Resource Months" },
 ];
 
 const OPERATOR_OPTIONS: { value: FilterOp; label: string }[] = [
@@ -36,10 +76,120 @@ const OPERATOR_OPTIONS: { value: FilterOp; label: string }[] = [
 
 const PAGE_SIZE = 50;
 
+const RESOURCE_MONTH_RECOMMENDED_COLUMNS = [
+  "displayName",
+  "eid",
+  "chapter",
+  "countryCode",
+  "countryName",
+  "federalState",
+  "metroCityName",
+  "monthlyBaseWorkingDays",
+  "monthlyEffectiveWorkingDays",
+  "monthlyBaseAvailableHours",
+  "monthlyPublicHolidayWorkdayCount",
+  "monthlyPublicHolidayHoursDeduction",
+  "monthlyAbsenceDayEquivalent",
+  "monthlyAbsenceHoursDeduction",
+  "monthlySahHours",
+  "monthlyChargeabilityTargetPct",
+  "monthlyTargetHours",
+  "monthlyActualBookedHours",
+  "monthlyExpectedBookedHours",
+  "monthlyActualChargeabilityPct",
+  "monthlyExpectedChargeabilityPct",
+  "monthlyUnassignedHours",
+] as const;
+
+const REPORT_BLUEPRINTS: ReportBlueprint[] = [
+  {
+    id: "resource-month-sah-transparency",
+    label: "SAH transparency",
+    description: "Explains how monthly SAH is reduced by holidays and absences per person.",
+    entity: "resource_month",
+    templateName: "Monthly SAH transparency",
+    columns: [
+      "displayName",
+      "eid",
+      "chapter",
+      "countryName",
+      "federalState",
+      "metroCityName",
+      "monthlyBaseWorkingDays",
+      "monthlyEffectiveWorkingDays",
+      "monthlyBaseAvailableHours",
+      "monthlyPublicHolidayWorkdayCount",
+      "monthlyPublicHolidayHoursDeduction",
+      "monthlyAbsenceDayEquivalent",
+      "monthlyAbsenceHoursDeduction",
+      "monthlySahHours",
+      "monthlyChargeabilityTargetPct",
+      "monthlyTargetHours",
+    ],
+    sortBy: "displayName",
+    sortDir: "asc",
+  },
+  {
+    id: "resource-month-chargeability-audit",
+    label: "Chargeability audit",
+    description: "Shows the full path from monthly SAH to booked, target and unassigned hours.",
+    entity: "resource_month",
+    templateName: "Monthly chargeability audit",
+    columns: [
+      "displayName",
+      "eid",
+      "chapter",
+      "countryName",
+      "federalState",
+      "metroCityName",
+      "monthlySahHours",
+      "monthlyChargeabilityTargetPct",
+      "monthlyTargetHours",
+      "monthlyActualBookedHours",
+      "monthlyExpectedBookedHours",
+      "monthlyActualChargeabilityPct",
+      "monthlyExpectedChargeabilityPct",
+      "monthlyUnassignedHours",
+      "lcrCents",
+      "currency",
+    ],
+    sortBy: "monthlyActualChargeabilityPct",
+    sortDir: "desc",
+  },
+  {
+    id: "resource-month-location-comparison",
+    label: "Location comparison",
+    description: "Compares holiday impact across country, state and city contexts for the same month.",
+    entity: "resource_month",
+    templateName: "Monthly holiday comparison by location",
+    columns: [
+      "displayName",
+      "chapter",
+      "countryName",
+      "federalState",
+      "metroCityName",
+      "monthlyBaseWorkingDays",
+      "monthlyPublicHolidayWorkdayCount",
+      "monthlyPublicHolidayHoursDeduction",
+      "monthlyAbsenceHoursDeduction",
+      "monthlySahHours",
+      "monthlyActualChargeabilityPct",
+    ],
+    groupBy: "federalState",
+    sortBy: "monthlyPublicHolidayHoursDeduction",
+    sortDir: "desc",
+  },
+];
+
 function generateId(): string {
   return Math.random().toString(36).slice(2, 10);
 }
 
+function getCurrentPeriodMonth(): string {
+  const now = new Date();
+  return `${now.getFullYear()}-${String(now.getMonth() + 1).padStart(2, "0")}`;
+}
+
 // ─── Component ──────────────────────────────────────────────────────────────
 
 export function ReportBuilder() {
@@ -50,6 +200,9 @@ export function ReportBuilder() {
   const [groupBy, setGroupBy] = useState<string>("");
   const [sortBy, setSortBy] = useState<string>("");
   const [sortDir, setSortDir] = useState<"asc" | "desc">("asc");
+  const [periodMonth, setPeriodMonth] = useState<string>(getCurrentPeriodMonth());
+  const [selectedTemplateId, setSelectedTemplateId] = useState<string>("");
+  const [templateName, setTemplateName] = useState<string>("");
   const [page, setPage] = useState(0);
   const [runQuery, setRunQuery] = useState(false);
 
@@ -59,7 +212,21 @@ export function ReportBuilder() {
     { placeholderData: keepPreviousData },
   );
 
-  const availableColumns = columnsQuery.data ?? [];
+  const availableColumns: AvailableColumn[] = columnsQuery.data ?? [];
+  const templatesQuery = trpc.report.listTemplates.useQuery();
+  const saveTemplateMutation = trpc.report.saveTemplate.useMutation({
+    onSuccess: async (result) => {
+      setSelectedTemplateId(result.id);
+      await templatesQuery.refetch();
+    },
+  });
+  const deleteTemplateMutation = trpc.report.deleteTemplate.useMutation({
+    onSuccess: async () => {
+      setSelectedTemplateId("");
+      setTemplateName("");
+      await templatesQuery.refetch();
+    },
+  });
 
   // Scalar columns (for filter/sort/group — only non-relation columns)
   const scalarColumns = useMemo(
@@ -76,12 +243,13 @@ export function ReportBuilder() {
       filters: filters
         .filter((f) => f.field && f.value)
         .map(({ field, op, value }) => ({ field, op, value })),
+      ...(entity === "resource_month" ? { periodMonth } : {}),
       ...(groupBy ? { groupBy } : {}),
       ...(sortBy ? { sortBy, sortDir } : {}),
       limit: PAGE_SIZE,
       offset: page * PAGE_SIZE,
     };
-  }, [runQuery, entity, selectedColumns, filters, groupBy, sortBy, sortDir, page]);
+  }, [runQuery, entity, selectedColumns, filters, groupBy, sortBy, sortDir, page, periodMonth]);
 
   // Fetch report data
   const reportQuery = trpc.report.getReportData.useQuery(
@@ -99,6 +267,40 @@ export function ReportBuilder() {
     setFilters([]);
     setGroupBy("");
     setSortBy("");
+    if (newEntity === "resource_month") {
+      setPeriodMonth((current) => current || getCurrentPeriodMonth());
+    }
+    setRunQuery(false);
+    setPage(0);
+  }, []);
+
+  const applyTemplate = useCallback((template: ReportTemplateSummary) => {
+    const config = template.config;
+    setSelectedTemplateId(template.id);
+    setTemplateName(template.name);
+    setEntity(config.entity);
+    setSelectedColumns(new Set(config.columns));
+    setFilters(config.filters.map((filter: Omit<FilterRow, "id">) => ({ id: generateId(), ...filter })));
+    setGroupBy(config.groupBy ?? "");
+    setSortBy(config.sortBy ?? "");
+    setSortDir(config.sortDir ?? "asc");
+    setPeriodMonth(config.periodMonth ?? getCurrentPeriodMonth());
+    setRunQuery(false);
+    setPage(0);
+  }, [templatesQuery.data]);
+
+  const applyBlueprint = useCallback((blueprint: ReportBlueprint) => {
+    setSelectedTemplateId("");
+    setTemplateName(blueprint.templateName);
+    setEntity(blueprint.entity);
+    setSelectedColumns(new Set(blueprint.columns));
+    setFilters([]);
+    setGroupBy(blueprint.groupBy ?? "");
+    setSortBy(blueprint.sortBy ?? "");
+    setSortDir(blueprint.sortDir ?? "asc");
+    if (blueprint.entity === "resource_month") {
+      setPeriodMonth((current) => current || getCurrentPeriodMonth());
+    }
     setRunQuery(false);
     setPage(0);
   }, []);
@@ -163,6 +365,7 @@ export function ReportBuilder() {
         filters: filters
           .filter((f) => f.field && f.value)
           .map(({ field, op, value }) => ({ field, op, value })),
+        ...(entity === "resource_month" ? { periodMonth } : {}),
         ...(groupBy ? { groupBy } : {}),
         ...(sortBy ? { sortBy, sortDir } : {}),
         limit: 5000,
@@ -179,7 +382,42 @@ export function ReportBuilder() {
     } catch {
       // Error handled by tRPC
     }
-  }, [entity, selectedColumns, filters, groupBy, sortBy, sortDir, exportMutation]);
+  }, [entity, selectedColumns, filters, groupBy, sortBy, sortDir, exportMutation, periodMonth]);
+
+  const handleSaveTemplate = useCallback(async () => {
+    if (!templateName.trim() || selectedColumns.size === 0) return;
+
+    await saveTemplateMutation.mutateAsync({
+      ...(selectedTemplateId ? { id: selectedTemplateId } : {}),
+      name: templateName.trim(),
+      config: {
+        entity,
+        columns: Array.from(selectedColumns),
+        filters: filters
+          .filter((filter) => filter.field && filter.value)
+          .map(({ field, op, value }) => ({ field, op, value })),
+        ...(entity === "resource_month" ? { periodMonth } : {}),
+        ...(groupBy ? { groupBy } : {}),
+        ...(sortBy ? { sortBy, sortDir } : {}),
+      },
+    });
+  }, [
+    entity,
+    filters,
+    groupBy,
+    periodMonth,
+    saveTemplateMutation,
+    selectedColumns,
+    selectedTemplateId,
+    sortBy,
+    sortDir,
+    templateName,
+  ]);
+
+  const handleDeleteTemplate = useCallback(async () => {
+    if (!selectedTemplateId) return;
+    await deleteTemplateMutation.mutateAsync({ id: selectedTemplateId });
+  }, [deleteTemplateMutation, selectedTemplateId]);
 
   // ─── Derived ──────────────────────────────────────────────────────────
 
@@ -188,6 +426,15 @@ export function ReportBuilder() {
   const outputColumns = reportQuery.data?.columns ?? [];
   const totalPages = Math.ceil(totalCount / PAGE_SIZE);
   const isLoading = reportQuery.isFetching;
+  const templates = templatesQuery.data ?? [];
+  const resourceMonthBlueprints = useMemo(
+    () => REPORT_BLUEPRINTS.filter((blueprint) => blueprint.entity === entity),
+    [entity],
+  );
+  const recommendedColumnSet = useMemo(
+    () => entity === "resource_month" ? new Set<string>(RESOURCE_MONTH_RECOMMENDED_COLUMNS) : new Set<string>(),
+    [entity],
+  );
 
   // Column label lookup
   const columnLabelMap = useMemo(() => {
@@ -212,6 +459,61 @@ export function ReportBuilder() {
 
       {/* Config Panel */}
       <div className="space-y-5 rounded-2xl border border-gray-200 bg-white p-6 shadow-sm dark:border-slate-800 dark:bg-slate-950">
+        <div className="grid gap-3 rounded-2xl border border-gray-200 bg-gray-50/70 p-4 dark:border-slate-800 dark:bg-slate-900/60 lg:grid-cols-[minmax(0,1fr)_220px_auto_auto]">
+          <div className="space-y-2">
+            <label className="block text-sm font-medium text-gray-700 dark:text-gray-300">
+              Template
+            </label>
+            <select
+              value={selectedTemplateId}
+              onChange={(e) => {
+                const nextId = e.target.value;
+                setSelectedTemplateId(nextId);
+                const template = templates.find((entry: ReportTemplateSummary) => entry.id === nextId);
+                if (template) {
+                  applyTemplate(template);
+                }
+              }}
+              className="w-full rounded-xl border border-gray-300 bg-white px-3 py-2 text-sm text-gray-700 focus:border-brand-500 focus:ring-brand-500 dark:border-slate-700 dark:bg-slate-950 dark:text-gray-300"
+            >
+              <option value="">Unsaved view</option>
+              {templates.map((template) => (
+                <option key={template.id} value={template.id}>
+                  {template.name}{template.isShared && !template.isOwner ? " · shared" : ""}
+                </option>
+              ))}
+            </select>
+          </div>
+          <div className="space-y-2">
+            <label className="block text-sm font-medium text-gray-700 dark:text-gray-300">
+              Template name
+            </label>
+            <input
+              type="text"
+              value={templateName}
+              onChange={(e) => setTemplateName(e.target.value)}
+              placeholder="Monthly SAH by location"
+              className="w-full rounded-xl border border-gray-300 bg-white px-3 py-2 text-sm text-gray-700 placeholder:text-gray-400 focus:border-brand-500 focus:ring-brand-500 dark:border-slate-700 dark:bg-slate-950 dark:text-gray-300"
+            />
+          </div>
+          <button
+            type="button"
+            onClick={() => void handleSaveTemplate()}
+            disabled={!templateName.trim() || selectedColumns.size === 0 || saveTemplateMutation.isPending}
+            className="self-end rounded-xl bg-brand-600 px-4 py-2 text-sm font-medium text-white transition-colors hover:bg-brand-700 disabled:cursor-not-allowed disabled:opacity-50"
+          >
+            {saveTemplateMutation.isPending ? "Saving..." : selectedTemplateId ? "Update template" : "Save template"}
+          </button>
+          <button
+            type="button"
+            onClick={() => void handleDeleteTemplate()}
+            disabled={!selectedTemplateId || deleteTemplateMutation.isPending}
+            className="self-end rounded-xl border border-gray-300 bg-white px-4 py-2 text-sm font-medium text-gray-700 transition-colors hover:bg-gray-50 disabled:cursor-not-allowed disabled:opacity-50 dark:border-slate-700 dark:bg-slate-950 dark:text-gray-300 dark:hover:bg-slate-900"
+          >
+            {deleteTemplateMutation.isPending ? "Deleting..." : "Delete"}
+          </button>
+        </div>
+
         {/* Entity Selector */}
         <div>
           <label className="mb-2 block text-sm font-medium text-gray-700 dark:text-gray-300">
@@ -234,6 +536,73 @@ export function ReportBuilder() {
               </button>
             ))}
           </div>
+          {entity === "resource_month" && (
+            <div className="mt-4 space-y-4 rounded-2xl border border-emerald-200 bg-emerald-50/70 p-4 dark:border-emerald-900/60 dark:bg-emerald-950/20">
+              <div className="flex flex-wrap items-end gap-4">
+                <div>
+                  <label className="mb-1 block text-sm font-medium text-emerald-900 dark:text-emerald-200">
+                    Period month
+                  </label>
+                  <input
+                    type="month"
+                    value={periodMonth}
+                    onChange={(e) => setPeriodMonth(e.target.value)}
+                    className="rounded-xl border border-emerald-300 bg-white px-3 py-2 text-sm text-gray-700 focus:border-emerald-500 focus:ring-emerald-500 dark:border-emerald-900 dark:bg-slate-950 dark:text-gray-300"
+                  />
+                </div>
+                <p className="max-w-2xl text-sm text-emerald-900/80 dark:text-emerald-200/80">
+                  Resource Months uses the CapaKraken holiday and absence logic directly. SAH, booked hours and chargeability are calculated per resource and month with country, state and city context.
+                </p>
+              </div>
+
+              <div className="grid gap-3 lg:grid-cols-3">
+                {resourceMonthBlueprints.map((blueprint) => (
+                  <button
+                    key={blueprint.id}
+                    type="button"
+                    onClick={() => applyBlueprint(blueprint)}
+                    className="rounded-2xl border border-emerald-200 bg-white/80 p-4 text-left transition hover:border-emerald-400 hover:bg-white dark:border-emerald-900/70 dark:bg-slate-950/60 dark:hover:border-emerald-700"
+                  >
+                    <div className="text-sm font-semibold text-emerald-950 dark:text-emerald-100">
+                      {blueprint.label}
+                    </div>
+                    <p className="mt-1 text-xs leading-5 text-emerald-900/75 dark:text-emerald-200/75">
+                      {blueprint.description}
+                    </p>
+                  </button>
+                ))}
+              </div>
+
+              <div className="rounded-2xl border border-emerald-200/80 bg-white/60 p-4 dark:border-emerald-900/60 dark:bg-slate-950/40">
+                <div className="text-sm font-medium text-emerald-950 dark:text-emerald-100">
+                  Recommended transparency columns
+                </div>
+                <div className="mt-2 flex flex-wrap gap-2">
+                  {RESOURCE_MONTH_RECOMMENDED_COLUMNS.map((column) => (
+                    <button
+                      key={column}
+                      type="button"
+                      onClick={() => toggleColumn(column)}
+                      className={clsx(
+                        "rounded-full border px-3 py-1 text-xs font-medium transition",
+                        selectedColumns.has(column)
+                          ? "border-emerald-500 bg-emerald-500 text-white"
+                          : "border-emerald-200 bg-white text-emerald-900 hover:border-emerald-400 dark:border-emerald-900 dark:bg-slate-950 dark:text-emerald-200 dark:hover:border-emerald-700",
+                      )}
+                    >
+                      {columnLabelMap.get(column) ?? column}
+                    </button>
+                  ))}
+                </div>
+                <p className="mt-3 text-xs text-emerald-900/75 dark:text-emerald-200/75">
+                  Formula reference: base available hours - holiday deduction - absence deduction = monthly SAH. Chargeability uses booked hours divided by monthly SAH.
+                </p>
+                <p className="mt-2 text-xs text-emerald-900/75 dark:text-emerald-200/75">
+                  Export recommendation: include both basis columns and computed metrics in the CSV. That keeps Excel as a review layer instead of rebuilding CapaKraken logic outside the product.
+                </p>
+              </div>
+            </div>
+          )}
         </div>
 
         {/* Column Picker */}
@@ -276,6 +645,11 @@ export function ReportBuilder() {
                     className="h-3.5 w-3.5 rounded border-gray-300 text-brand-600 focus:ring-brand-500 dark:border-slate-600"
                   />
                   <span className="text-gray-700 dark:text-gray-300">{col.label}</span>
+                  {recommendedColumnSet.has(col.key) && (
+                    <span className="rounded-full bg-emerald-100 px-1.5 py-0.5 text-[9px] font-semibold uppercase tracking-[0.14em] text-emerald-700 dark:bg-emerald-950/60 dark:text-emerald-300">
+                      Rec
+                    </span>
+                  )}
                   <span className="ml-auto text-[10px] uppercase tracking-wider text-gray-400 dark:text-gray-600">
                     {col.dataType}
                   </span>
@@ -428,13 +802,18 @@ export function ReportBuilder() {
         <div className="rounded-2xl border border-gray-200 bg-white shadow-sm dark:border-slate-800 dark:bg-slate-950">
           {/* Results Header */}
           <div className="flex items-center justify-between border-b border-gray-200 px-6 py-4 dark:border-slate-800">
-            <div className="flex items-center gap-3">
-              <h2 className="text-lg font-semibold text-gray-900 dark:text-gray-50">Results</h2>
-              {!isLoading && (
-                <span className="rounded-full bg-gray-100 px-2.5 py-0.5 text-xs font-medium text-gray-600 dark:bg-slate-800 dark:text-gray-400">
-                  {totalCount.toLocaleString()} row{totalCount !== 1 ? "s" : ""}
-                </span>
-              )}
+            <div className="space-y-1">
+              <div className="flex items-center gap-3">
+                <h2 className="text-lg font-semibold text-gray-900 dark:text-gray-50">Results</h2>
+                {!isLoading && (
+                  <span className="rounded-full bg-gray-100 px-2.5 py-0.5 text-xs font-medium text-gray-600 dark:bg-slate-800 dark:text-gray-400">
+                    {totalCount.toLocaleString()} row{totalCount !== 1 ? "s" : ""}
+                  </span>
+                )}
+              </div>
+              <p className="text-xs text-gray-500 dark:text-gray-400">
+                CSV exports include the selected basis columns and computed CapaKraken metrics exactly as shown here.
+              </p>
             </div>
             <button
               type="button"
diff --git a/apps/web/src/components/staffing/StaffingPanel.tsx b/apps/web/src/components/staffing/StaffingPanel.tsx
index 0d3e014..26ca15c 100644
--- a/apps/web/src/components/staffing/StaffingPanel.tsx
+++ b/apps/web/src/components/staffing/StaffingPanel.tsx
@@ -209,17 +209,74 @@ interface SuggestionLike {
   resourceName: string;
   eid: string;
   score: number;
+  valueScore?: number;
   scoreBreakdown: {
     skillScore: number;
     availabilityScore: number;
     costScore: number;
     utilizationScore: number;
+    total?: number;
   };
   matchedSkills: string[];
   missingSkills: string[];
   availabilityConflicts: string[];
   estimatedDailyCostCents: number;
   currentUtilization: number;
+  remainingHours?: number;
+  remainingHoursPerDay?: number;
+  baseAvailableHours?: number;
+  effectiveAvailableHours?: number;
+  holidayHoursDeduction?: number;
+  location?: {
+    countryCode: string | null;
+    countryName: string | null;
+    federalState: string | null;
+    metroCityName: string | null;
+    label: string;
+  };
+  capacity?: {
+    requestedHoursPerDay: number;
+    requestedHoursTotal: number;
+    baseWorkingDays: number;
+    effectiveWorkingDays: number;
+    baseAvailableHours: number;
+    effectiveAvailableHours: number;
+    bookedHours: number;
+    remainingHours: number;
+    remainingHoursPerDay: number;
+    holidayCount: number;
+    holidayWorkdayCount: number;
+    holidayHoursDeduction: number;
+    absenceDayEquivalent: number;
+    absenceHoursDeduction: number;
+  };
+  conflicts?: {
+    count: number;
+    conflictDays: string[];
+    details: Array<{
+      date: string;
+      baseHours: number;
+      effectiveHours: number;
+      allocatedHours: number;
+      remainingHours: number;
+      requestedHours: number;
+      shortageHours: number;
+      absenceFraction: number;
+      isHoliday: boolean;
+    }>;
+  };
+  ranking?: {
+    rank: number;
+    baseRank: number;
+    tieBreakerApplied: boolean;
+    tieBreakerReason: string | null;
+    model: string;
+    components: Array<{
+      key: string;
+      label: string;
+      score: number;
+    }>;
+  };
 }
 
 interface SuggestionCardProps {
@@ -231,10 +288,24 @@ interface SuggestionCardProps {
 }
 
 function SuggestionCard({ suggestion, rank, searchCriteria, onAssigned, onError }: SuggestionCardProps) {
-  const [expanded, setExpanded] = useState(false);
+  const [showDetails, setShowDetails] = useState(false);
+  const [showAssignForm, setShowAssignForm] = useState(false);
+  const locationLabel = suggestion.location?.label
+    || [suggestion.location?.countryCode, suggestion.location?.federalState, suggestion.location?.metroCityName]
+      .filter(Boolean)
+      .join(" / ")
+    || "No location";
+  const capacity = suggestion.capacity;
+  const conflicts = suggestion.conflicts;
+  const conflictCount = conflicts?.count ?? suggestion.availabilityConflicts.length;
+  const remainingHours = capacity?.remainingHours ?? suggestion.remainingHours ?? 0;
+  const remainingHoursPerDay = capacity?.remainingHoursPerDay ?? suggestion.remainingHoursPerDay ?? 0;
+  const baseAvailableHours = capacity?.baseAvailableHours ?? suggestion.baseAvailableHours ?? 0;
+  const effectiveAvailableHours = capacity?.effectiveAvailableHours ?? suggestion.effectiveAvailableHours ?? 0;
+  const holidayHoursDeduction = capacity?.holidayHoursDeduction ?? suggestion.holidayHoursDeduction ?? 0;
 
   return (
-    <div className="app-surface p-5">
+    <div data-suggestion className="app-surface p-5">
       <div className="flex flex-col gap-4 lg:flex-row lg:items-start lg:justify-between">
         <div className="flex items-center gap-4">
           <div className="flex h-12 w-12 items-center justify-center rounded-2xl bg-brand-100 font-display text-lg font-semibold text-brand-700 dark:bg-brand-900/40 dark:text-brand-200">
@@ -243,15 +314,23 @@ function SuggestionCard({ suggestion, rank, searchCriteria, onAssigned, onError
           <div>
             <div className="text-base font-semibold text-gray-900 dark:text-gray-100">{suggestion.resourceName}</div>
             <div className="text-sm text-gray-500">{suggestion.eid}</div>
+            <div className="mt-1 text-xs text-gray-500">{locationLabel}</div>
           </div>
         </div>
         <div className="flex items-start gap-3">
+          <Button
+            variant="ghost"
+            size="sm"
+            onClick={() => setShowDetails((prev) => !prev)}
+          >
+            {showDetails ? "Hide Details" : "Details"}
+          </Button>
           <Button
             variant="primary"
             size="sm"
-            onClick={() => setExpanded((prev) => !prev)}
+            onClick={() => setShowAssignForm((prev) => !prev)}
           >
-            {expanded ? "Cancel" : "Assign"}
+            {showAssignForm ? "Close Assign" : "Assign"}
           </Button>
           <div className="rounded-2xl border border-brand-200 bg-brand-50 px-4 py-3 text-right dark:border-brand-900/50 dark:bg-brand-900/20">
             <div className="text-[11px] font-semibold uppercase tracking-[0.18em] text-brand-700 dark:text-brand-200 inline-flex items-center gap-0.5">Match Score<InfoTooltip content="Composite score (0-100) blending skill fit, free capacity, cost efficiency, and current utilization." /></div>
@@ -260,13 +339,6 @@ function SuggestionCard({ suggestion, rank, searchCriteria, onAssigned, onError
         </div>
       </div>
 
-      <div className="mt-5 grid gap-3 sm:grid-cols-2 xl:grid-cols-4">
-        <ScoreBar label="Skills" value={suggestion.scoreBreakdown.skillScore} tooltip="Quality of skill overlap with the requested stack, weighted by proficiency level." />
-        <ScoreBar label="Availability" value={suggestion.scoreBreakdown.availabilityScore} tooltip="Free capacity during the selected period, accounting for existing bookings and vacations." />
-        <ScoreBar label="Cost" value={suggestion.scoreBreakdown.costScore} tooltip="Cost efficiency based on the resource's LCR relative to the team average." />
-        <ScoreBar label="Utilization" value={suggestion.scoreBreakdown.utilizationScore} tooltip="Current workload. Higher score means more capacity available (lower utilization)." />
-      </div>
-
       <div className="mt-4 flex flex-wrap gap-2">
         {suggestion.matchedSkills.map((skill) => (
           <span key={skill} className="rounded-full bg-green-50 px-2.5 py-1 text-xs font-medium text-green-700 dark:bg-green-950/30 dark:text-green-300">
@@ -280,24 +352,144 @@ function SuggestionCard({ suggestion, rank, searchCriteria, onAssigned, onError
         ))}
       </div>
 
+      <div className="mt-4 grid gap-3 sm:grid-cols-2 xl:grid-cols-4">
+        <StatCard
+          label="Free / Workday"
+          value={formatHours(remainingHoursPerDay)}
+          tone={remainingHoursPerDay >= searchCriteria.hoursPerDay ? "good" : "warn"}
+          helper={`${formatHours(remainingHours)} total in window`}
+        />
+        <StatCard
+          label="Capacity"
+          value={`${formatHours(effectiveAvailableHours)} effective`}
+          helper={`${formatHours(baseAvailableHours)} base`}
+        />
+        <StatCard
+          label="Holiday Deduction"
+          value={holidayHoursDeduction > 0 ? formatHours(holidayHoursDeduction) : "0h"}
+          tone={holidayHoursDeduction > 0 ? "warn" : "neutral"}
+          helper={capacity ? `${capacity.holidayWorkdayCount} affected workdays` : "No local holiday impact"}
+        />
+        <StatCard
+          label="Conflicts"
+          value={String(conflictCount)}
+          tone={conflictCount > 0 ? "warn" : "good"}
+          helper={conflictCount > 0 ? `${conflictCount} overloaded day${conflictCount === 1 ? "" : "s"}` : "No day-level overloads"}
+        />
+      </div>
+
       <div className="mt-4 flex flex-wrap items-center gap-4 text-xs text-gray-500">
         <span>LCR: {(suggestion.estimatedDailyCostCents / 100 / 8).toFixed(0)} EUR/h</span>
         <span>Utilization: {Math.round(suggestion.currentUtilization)}%</span>
-        {suggestion.availabilityConflicts.length > 0 && (
+        {suggestion.valueScore != null && (
+          <span>Value Score: {suggestion.valueScore}</span>
+        )}
+        {conflictCount > 0 && (
           <span className="font-medium text-amber-600 dark:text-amber-300">
-            {suggestion.availabilityConflicts.length} scheduling conflict{suggestion.availabilityConflicts.length === 1 ? "" : "s"}
+            {conflictCount} scheduling conflict{conflictCount === 1 ? "" : "s"}
           </span>
         )}
       </div>
 
-      {expanded && (
+      {showDetails && (
+        <div className="mt-5 space-y-4 rounded-2xl border border-gray-200 bg-gray-50/80 p-4 dark:border-gray-800 dark:bg-gray-950/40">
+          <div className="grid gap-3 sm:grid-cols-2 xl:grid-cols-4">
+            <ScoreBar label="Skills" value={suggestion.scoreBreakdown.skillScore} tooltip="Quality of skill overlap with the requested stack, weighted by proficiency level." />
+            <ScoreBar label="Availability" value={suggestion.scoreBreakdown.availabilityScore} tooltip="Free capacity during the selected period, accounting for existing bookings and vacations." />
+            <ScoreBar label="Cost" value={suggestion.scoreBreakdown.costScore} tooltip="Cost efficiency based on the resource's LCR relative to the team average." />
+            <ScoreBar label="Utilization" value={suggestion.scoreBreakdown.utilizationScore} tooltip="Current workload. Higher score means more capacity available (lower utilization)." />
+          </div>
+
+          <div className="grid gap-4 xl:grid-cols-[1.15fr_1fr]">
+            <div className="rounded-2xl border border-gray-200 bg-white p-4 dark:border-gray-800 dark:bg-gray-950/60">
+              <div className="text-[11px] font-semibold uppercase tracking-[0.18em] text-gray-500">Capacity Basis</div>
+              <div className="mt-3 grid gap-3 sm:grid-cols-2">
+                <MetricLine label="Requested load" value={`${formatHours(capacity?.requestedHoursPerDay ?? searchCriteria.hoursPerDay)} / day`} />
+                <MetricLine label="Requested total" value={formatHours(capacity?.requestedHoursTotal ?? 0)} />
+                <MetricLine label="Base working days" value={String(capacity?.baseWorkingDays ?? 0)} />
+                <MetricLine label="Effective working days" value={String(capacity?.effectiveWorkingDays ?? 0)} />
+                <MetricLine label="Base available hours" value={formatHours(baseAvailableHours)} />
+                <MetricLine label="Effective available hours" value={formatHours(effectiveAvailableHours)} />
+                <MetricLine label="Booked hours" value={formatHours(capacity?.bookedHours ?? 0)} />
+                <MetricLine label="Remaining hours" value={formatHours(remainingHours)} />
+                <MetricLine label="Holiday deduction" value={formatHours(holidayHoursDeduction)} />
+                <MetricLine label="Absence deduction" value={formatHours(capacity?.absenceHoursDeduction ?? 0)} />
+              </div>
+            </div>
+
+            <div className="space-y-4">
+              <div className="rounded-2xl border border-gray-200 bg-white p-4 dark:border-gray-800 dark:bg-gray-950/60">
+                <div className="text-[11px] font-semibold uppercase tracking-[0.18em] text-gray-500">Ranking Basis</div>
+                <p className="mt-2 text-sm text-gray-600 dark:text-gray-300">
+                  {suggestion.ranking?.model ?? "Composite ranking across skill fit, availability, cost, and utilization."}
+                </p>
+                <div className="mt-3 space-y-2 text-sm text-gray-600 dark:text-gray-300">
+                  {(suggestion.ranking?.components ?? []).map((component) => (
+                    <MetricLine key={component.key} label={component.label} value={`${component.score}`} />
+                  ))}
+                  {suggestion.ranking?.tieBreakerReason && (
+                    <div className="rounded-xl border border-amber-200 bg-amber-50 px-3 py-2 text-xs text-amber-800 dark:border-amber-900/50 dark:bg-amber-950/30 dark:text-amber-200">
+                      {suggestion.ranking.tieBreakerReason}
+                    </div>
+                  )}
+                </div>
+              </div>
+
+              <div className="rounded-2xl border border-gray-200 bg-white p-4 dark:border-gray-800 dark:bg-gray-950/60">
+                <div className="text-[11px] font-semibold uppercase tracking-[0.18em] text-gray-500">Location + Calendar</div>
+                <div className="mt-3 space-y-2 text-sm text-gray-600 dark:text-gray-300">
+                  <MetricLine label="Location" value={locationLabel} />
+                  <MetricLine label="Holiday dates" value={String(capacity?.holidayCount ?? 0)} />
+                  <MetricLine label="Holiday workdays" value={String(capacity?.holidayWorkdayCount ?? 0)} />
+                  <MetricLine label="Absence days" value={String(capacity?.absenceDayEquivalent ?? 0)} />
+                </div>
+              </div>
+            </div>
+          </div>
+
+          <div className="rounded-2xl border border-gray-200 bg-white p-4 dark:border-gray-800 dark:bg-gray-950/60">
+            <div className="flex items-center justify-between gap-3">
+              <div className="text-[11px] font-semibold uppercase tracking-[0.18em] text-gray-500">Conflict Check</div>
+              <div className="text-xs text-gray-500">
+                Requested {formatHours(searchCriteria.hoursPerDay)} / day between {searchCriteria.startDate} and {searchCriteria.endDate}
+              </div>
+            </div>
+            {conflictCount === 0 ? (
+              <p className="mt-3 text-sm text-green-700 dark:text-green-300">
+                No overloaded working days in the selected window.
+              </p>
+            ) : (
+              <div className="mt-3 space-y-2">
+                {(conflicts?.details ?? []).slice(0, 6).map((item) => (
+                  <div key={item.date} className="rounded-xl border border-amber-200 bg-amber-50/80 px-3 py-2 text-sm text-amber-900 dark:border-amber-900/50 dark:bg-amber-950/30 dark:text-amber-100">
+                    <div className="flex flex-wrap items-center justify-between gap-2">
+                      <span className="font-medium">{item.date}</span>
+                      <span>Short by {formatHours(item.shortageHours)}</span>
+                    </div>
+                    <div className="mt-1 text-xs">
+                      Base {formatHours(item.baseHours)} | Effective {formatHours(item.effectiveHours)} | Already booked {formatHours(item.allocatedHours)} | Remaining {formatHours(item.remainingHours)}
+                    </div>
+                  </div>
+                ))}
+                {conflictCount > 6 && (
+                  <p className="text-xs text-gray-500">
+                    +{conflictCount - 6} more conflict day{conflictCount - 6 === 1 ? "" : "s"}
+                  </p>
+                )}
+              </div>
+            )}
+          </div>
+        </div>
+      )}
+
+      {showAssignForm && (
         <AssignForm
           resourceId={suggestion.resourceId}
           resourceName={suggestion.resourceName}
           searchCriteria={searchCriteria}
           onAssigned={() => onAssigned(suggestion.resourceId, suggestion.resourceName)}
           onError={onError}
-          onCancel={() => setExpanded(false)}
+          onCancel={() => setShowAssignForm(false)}
         />
       )}
     </div>
@@ -499,3 +691,45 @@ function ScoreBar({ label, value, tooltip }: { label: string; value: number; too
     </div>
   );
 }
+
+function formatHours(value: number): string {
+  const rounded = Math.round(value * 10) / 10;
+  return `${rounded}h`;
+}
+
+function MetricLine({ label, value }: { label: string; value: string }) {
+  return (
+    <div className="flex items-center justify-between gap-3 border-b border-gray-100 pb-2 text-sm last:border-b-0 last:pb-0 dark:border-gray-800">
+      <span className="text-gray-500 dark:text-gray-400">{label}</span>
+      <span className="text-right font-medium text-gray-900 dark:text-gray-100">{value}</span>
+    </div>
+  );
+}
+
+function StatCard({
+  label,
+  value,
+  helper,
+  tone = "neutral",
+}: {
+  label: string;
+  value: string;
+  helper?: string;
+  tone?: "neutral" | "good" | "warn";
+}) {
+  const toneClass = tone === "good"
+    ? "border-green-200 bg-green-50/70 dark:border-green-900/40 dark:bg-green-950/20"
+    : tone === "warn"
+      ? "border-amber-200 bg-amber-50/70 dark:border-amber-900/40 dark:bg-amber-950/20"
+      : "border-gray-200 bg-gray-50/70 dark:border-gray-700 dark:bg-gray-900/40";
+
+  return (
+    <div className={`rounded-2xl border p-3 ${toneClass}`}>
+      <div className="text-[11px] font-semibold uppercase tracking-[0.16em] text-gray-500">{label}</div>
+      <div className="mt-2 text-lg font-semibold text-gray-900 dark:text-gray-100">{value}</div>
+      {helper && (
+        <div className="mt-1 text-xs text-gray-500 dark:text-gray-400">{helper}</div>
+      )}
+    </div>
+  );
+}
diff --git a/apps/web/src/components/timeline/AllocationPopover.tsx b/apps/web/src/components/timeline/AllocationPopover.tsx
index 653a665..96244e7 100644
--- a/apps/web/src/components/timeline/AllocationPopover.tsx
+++ b/apps/web/src/components/timeline/AllocationPopover.tsx
@@ -5,6 +5,7 @@ import { useEffect, useRef, useState } from "react";
 import type { AllocationLike, AllocationReadModel, Assignment } from "@capakraken/shared";
 import { trpc } from "~/lib/trpc/client.js";
 import { useInvalidateTimeline } from "~/hooks/useInvalidatePlanningViews.js";
+import { useViewportPopover } from "~/hooks/useViewportPopover.js";
 import { getPlanningEntryMutationId } from "~/lib/planningEntryIds.js";
 import { DateInput } from "~/components/ui/DateInput.js";
 
@@ -28,9 +29,14 @@ export function AllocationPopover({
   anchorX,
   anchorY,
 }: AllocationPopoverProps) {
-  const ref = useRef<HTMLDivElement>(null);
   const utils = trpc.useUtils();
   const invalidateTimeline = useInvalidateTimeline();
+  const { ref, style } = useViewportPopover({
+    anchor: { kind: "point", x: anchorX, y: anchorY },
+    width: 300,
+    estimatedHeight: 360,
+    onClose,
+  });
 
   const { data: allocationView, isLoading } = trpc.allocation.listView.useQuery(
     { projectId },
@@ -63,17 +69,6 @@ export function AllocationPopover({
     },
   });
 
-  // Close on outside click
-  useEffect(() => {
-    function handleClick(e: MouseEvent) {
-      if (ref.current && !ref.current.contains(e.target as Node)) {
-        onClose();
-      }
-    }
-    document.addEventListener("mousedown", handleClick);
-    return () => document.removeEventListener("mousedown", handleClick);
-  }, [onClose]);
-
   function toDateInput(d: Date): string {
     const y = d.getFullYear();
     const m = String(d.getMonth() + 1).padStart(2, "0");
@@ -93,18 +88,9 @@ export function AllocationPopover({
     });
   }
 
-  // Position popover so it stays on screen
-  const popoverStyle: React.CSSProperties = {
-    position: "fixed",
-    left: Math.min(anchorX, window.innerWidth - 320),
-    top: Math.min(anchorY + 8, window.innerHeight - 360),
-    zIndex: 50,
-    width: 300,
-  };
-
   if (isLoading || !allocation) {
     return (
-      <div ref={ref} style={popoverStyle} className="bg-white border border-gray-200 rounded-xl shadow-xl p-4 text-sm text-gray-500">
+      <div ref={ref} style={style} className="bg-white border border-gray-200 rounded-xl shadow-xl p-4 text-sm text-gray-500">
         Loading...
       </div>
     );
@@ -115,7 +101,7 @@ export function AllocationPopover({
   return (
     <div
       ref={ref}
-      style={popoverStyle}
+      style={style}
       className="bg-white border border-gray-200 rounded-xl shadow-xl overflow-hidden"
     >
       {/* Header */}
diff --git a/apps/web/src/components/timeline/DemandPopover.tsx b/apps/web/src/components/timeline/DemandPopover.tsx
index 18ba71c..42fe775 100644
--- a/apps/web/src/components/timeline/DemandPopover.tsx
+++ b/apps/web/src/components/timeline/DemandPopover.tsx
@@ -1,8 +1,8 @@
 "use client";
 
-import { useEffect, useRef } from "react";
 import type { TimelineDemandEntry } from "./TimelineContext.js";
 import { formatCents, formatDateLong } from "~/lib/format.js";
+import { useViewportPopover } from "~/hooks/useViewportPopover.js";
 
 interface DemandPopoverProps {
   demand: TimelineDemandEntry;
@@ -21,17 +21,12 @@ export function DemandPopover({
   anchorX,
   anchorY,
 }: DemandPopoverProps) {
-  const ref = useRef<HTMLDivElement>(null);
-
-  useEffect(() => {
-    function handleClick(e: MouseEvent) {
-      if (ref.current && !ref.current.contains(e.target as Node)) {
-        onClose();
-      }
-    }
-    document.addEventListener("mousedown", handleClick);
-    return () => document.removeEventListener("mousedown", handleClick);
-  }, [onClose]);
+  const { ref, style } = useViewportPopover({
+    anchor: { kind: "point", x: anchorX, y: anchorY },
+    width: 300,
+    estimatedHeight: 340,
+    onClose,
+  });
 
   const roleName = demand.roleEntity?.name ?? demand.role ?? "Unspecified";
   const roleColor = demand.roleEntity?.color ?? "#f59e0b";
@@ -41,18 +36,10 @@ export function DemandPopover({
   const totalHours = demand.hoursPerDay * days;
   const budgetCents = demand.dailyCostCents * days;
 
-  const popoverStyle: React.CSSProperties = {
-    position: "fixed",
-    left: Math.min(anchorX, window.innerWidth - 320),
-    top: Math.min(anchorY + 8, window.innerHeight - 340),
-    zIndex: 50,
-    width: 300,
-  };
-
   return (
     <div
       ref={ref}
-      style={popoverStyle}
+      style={style}
       className="bg-white dark:bg-gray-800 border border-gray-200 dark:border-gray-600 rounded-xl shadow-xl overflow-hidden"
     >
       {/* Header */}
diff --git a/apps/web/src/components/timeline/NewAllocationPopover.tsx b/apps/web/src/components/timeline/NewAllocationPopover.tsx
index 19876d9..c58e29b 100644
--- a/apps/web/src/components/timeline/NewAllocationPopover.tsx
+++ b/apps/web/src/components/timeline/NewAllocationPopover.tsx
@@ -5,6 +5,7 @@ import { useEffect, useRef, useState } from "react";
 import { AllocationStatus } from "@capakraken/shared";
 import { trpc } from "~/lib/trpc/client.js";
 import { useInvalidateTimeline } from "~/hooks/useInvalidatePlanningViews.js";
+import { useViewportPopover } from "~/hooks/useViewportPopover.js";
 import { DateInput } from "~/components/ui/DateInput.js";
 
 interface NewAllocationPopoverProps {
@@ -36,7 +37,12 @@ export function NewAllocationPopover({
   onClose,
   onCreated,
 }: NewAllocationPopoverProps) {
-  const ref = useRef<HTMLDivElement>(null);
+  const { ref, style } = useViewportPopover({
+    anchor: { kind: "point", x: anchorX - 10, y: anchorY },
+    width: 320,
+    estimatedHeight: 440,
+    onClose,
+  });
   const invalidateTimeline = useInvalidateTimeline();
 
   const [search, setSearch] = useState("");
@@ -67,17 +73,6 @@ export function NewAllocationPopover({
     },
   });
 
-  // Close on outside click
-  useEffect(() => {
-    function handleClick(e: MouseEvent) {
-      if (ref.current && !ref.current.contains(e.target as Node)) {
-        onClose();
-      }
-    }
-    document.addEventListener("mousedown", handleClick);
-    return () => document.removeEventListener("mousedown", handleClick);
-  }, [onClose]);
-
   function handleCreate() {
     if (!selectedProjectId) return;
     createMutation.mutate({
@@ -93,13 +88,10 @@ export function NewAllocationPopover({
 
   const canCreate = !!selectedProjectId && !!start && !!end && hoursPerDay > 0;
 
-  const left = Math.min(anchorX - 10, typeof window !== "undefined" ? window.innerWidth - 340 : anchorX);
-  const top = Math.min(anchorY + 8, typeof window !== "undefined" ? window.innerHeight - 440 : anchorY);
-
   return (
     <div
       ref={ref}
-      style={{ position: "fixed", left, top, zIndex: 60, width: 320 }}
+      style={style}
       className="bg-white dark:bg-gray-800 border border-gray-200 dark:border-gray-700 rounded-xl shadow-2xl dark:shadow-black/40 overflow-hidden"
     >
       {/* Header */}
diff --git a/apps/web/src/components/timeline/ResourceHoverCard.tsx b/apps/web/src/components/timeline/ResourceHoverCard.tsx
index cbc89f9..f69539e 100644
--- a/apps/web/src/components/timeline/ResourceHoverCard.tsx
+++ b/apps/web/src/components/timeline/ResourceHoverCard.tsx
@@ -1,9 +1,9 @@
 "use client";
 
-import { useEffect, useRef, useState } from "react";
 import { trpc } from "~/lib/trpc/client.js";
 import { formatCents } from "~/lib/format.js";
 import type { SkillEntry } from "@capakraken/shared";
+import { useViewportPopover } from "~/hooks/useViewportPopover.js";
 
 interface ResourceHoverCardProps {
   resourceId: string;
@@ -12,34 +12,20 @@ interface ResourceHoverCardProps {
 }
 
 export function ResourceHoverCard({ resourceId, anchorEl, onClose }: ResourceHoverCardProps) {
-  const ref = useRef<HTMLDivElement>(null);
-  const [pos, setPos] = useState({ left: 0, top: 0 });
+  const { ref, style } = useViewportPopover({
+    anchor: { kind: "element", element: anchorEl },
+    width: 280,
+    estimatedHeight: 320,
+    onClose,
+    side: "right",
+    ignoreElements: [anchorEl],
+  });
 
   const { data, isLoading } = trpc.resource.getHoverCard.useQuery(
     { id: resourceId },
     { staleTime: 60_000 },
   );
 
-  // Position relative to anchor element
-  useEffect(() => {
-    const rect = anchorEl.getBoundingClientRect();
-    setPos({
-      left: rect.right + 8,
-      top: Math.min(rect.top, window.innerHeight - 320),
-    });
-  }, [anchorEl]);
-
-  // Close on outside click
-  useEffect(() => {
-    function handleClick(e: MouseEvent) {
-      if (ref.current && !ref.current.contains(e.target as Node) && !anchorEl.contains(e.target as Node)) {
-        onClose();
-      }
-    }
-    document.addEventListener("mousedown", handleClick);
-    return () => document.removeEventListener("mousedown", handleClick);
-  }, [onClose, anchorEl]);
-
   const skills = (data?.skills ?? []) as unknown as SkillEntry[];
   const mainSkills = skills.filter((s) => s.isMainSkill);
   const topSkills = skills
@@ -47,19 +33,11 @@ export function ResourceHoverCard({ resourceId, anchorEl, onClose }: ResourceHov
     .sort((a, b) => b.proficiency - a.proficiency)
     .slice(0, 6);
 
-  const popoverStyle: React.CSSProperties = {
-    position: "fixed",
-    left: Math.min(pos.left, window.innerWidth - 300),
-    top: pos.top,
-    zIndex: 50,
-    width: 280,
-  };
-
   return (
     <div
       ref={ref}
       data-resource-hover-card="true"
-      style={popoverStyle}
+      style={style}
       className="bg-white dark:bg-gray-800 border border-gray-200 dark:border-gray-600 rounded-xl shadow-xl overflow-hidden"
       onMouseLeave={onClose}
     >
diff --git a/apps/web/src/components/timeline/TimelineContext.tsx b/apps/web/src/components/timeline/TimelineContext.tsx
index c03758c..c54892c 100644
--- a/apps/web/src/components/timeline/TimelineContext.tsx
+++ b/apps/web/src/components/timeline/TimelineContext.tsx
@@ -113,6 +113,16 @@ export type VacationEntry = {
   halfDayPart?: string | null;
 };
 
+export type HolidayOverlayEntry = {
+  id: string;
+  resourceId: string;
+  type: string;
+  status: string;
+  startDate: Date | string;
+  endDate: Date | string;
+  note?: string | null;
+};
+
 // ─── Context shape ──────────────────────────────────────────────────────────
 
 export interface TimelineContextValue {
@@ -314,9 +324,43 @@ export function TimelineProvider({
     { placeholderData: (prev) => prev, refetchOnWindowFocus: false, staleTime: 90_000 },
   );
 
+  const { data: holidayOverlayEntries = [] } = trpc.timeline.getHolidayOverlays.useQuery(
+    {
+      startDate: viewStart,
+      endDate: viewEnd,
+      ...(filters.clientIds.length > 0 ? { clientIds: filters.clientIds } : {}),
+      ...(filters.projectIds.length > 0 ? { projectIds: filters.projectIds } : {}),
+      ...(filters.chapters.length > 0 ? { chapters: filters.chapters } : {}),
+      ...(filters.eids.length > 0 ? { eids: filters.eids } : {}),
+      ...(filters.countryCodes.length > 0 ? { countryCodes: filters.countryCodes } : {}),
+    },
+    { placeholderData: (prev) => prev, refetchOnWindowFocus: false, staleTime: 90_000 },
+  );
+
   const vacationsByResource = useMemo(() => {
     const map = new Map<string, VacationEntry[]>();
-    for (const vacation of vacationEntries as VacationEntry[]) {
+    const mergedEntries = [...(vacationEntries as VacationEntry[])];
+    const existingKeys = new Set(
+      mergedEntries.map((vacation) => {
+        const start = new Date(vacation.startDate).toISOString().slice(0, 10);
+        const end = new Date(vacation.endDate).toISOString().slice(0, 10);
+        return `${vacation.resourceId}:${vacation.type}:${start}:${end}`;
+      }),
+    );
+
+    for (const holiday of holidayOverlayEntries as HolidayOverlayEntry[]) {
+      const start = new Date(holiday.startDate).toISOString().slice(0, 10);
+      const end = new Date(holiday.endDate).toISOString().slice(0, 10);
+      const key = `${holiday.resourceId}:${holiday.type}:${start}:${end}`;
+      if (existingKeys.has(key)) {
+        continue;
+      }
+
+      existingKeys.add(key);
+      mergedEntries.push(holiday as VacationEntry);
+    }
+
+    for (const vacation of mergedEntries) {
       const existing = map.get(vacation.resourceId);
       if (existing) {
         existing.push(vacation);
@@ -325,7 +369,7 @@ export function TimelineProvider({
       }
     }
     return map;
-  }, [vacationEntries]);
+  }, [holidayOverlayEntries, vacationEntries]);
 
   // When EID filter is active, explicitly fetch those resources.
   const { data: eidFilterData } = trpc.resource.list.useQuery(
diff --git a/apps/web/src/components/timeline/TimelineFilter.tsx b/apps/web/src/components/timeline/TimelineFilter.tsx
index 63ab1c4..13eaf15 100644
--- a/apps/web/src/components/timeline/TimelineFilter.tsx
+++ b/apps/web/src/components/timeline/TimelineFilter.tsx
@@ -2,7 +2,8 @@
 
 import { clsx } from "clsx";
 import { createPortal } from "react-dom";
-import { useCallback, useEffect, useRef, useState, type RefObject } from "react";
+import { useRef, useState, type RefObject } from "react";
+import { useAnchoredOverlay } from "~/hooks/useAnchoredOverlay.js";
 import { trpc } from "~/lib/trpc/client.js";
 
 export interface TimelineFilters {
@@ -159,55 +160,12 @@ export function TimelineFilter({
   isOpen,
   onClose,
 }: TimelineFilterProps) {
-  const panelRef = useRef<HTMLDivElement | null>(null);
-  const [panelPosition, setPanelPosition] = useState({ top: 0, left: 0 });
-
-  const updatePanelPosition = useCallback(() => {
-    const trigger = anchorRef.current;
-    if (!trigger) return;
-
-    const rect = trigger.getBoundingClientRect();
-    const panelWidth = panelRef.current?.offsetWidth ?? 320;
-    const viewportPadding = 16;
-    const maxLeft = window.innerWidth - panelWidth - viewportPadding;
-
-    setPanelPosition({
-      top: rect.bottom + 8,
-      left: Math.max(viewportPadding, Math.min(rect.right - panelWidth, maxLeft)),
-    });
-  }, [anchorRef]);
-
-  useEffect(() => {
-    if (!isOpen) return;
-
-    updatePanelPosition();
-    const rafId = window.requestAnimationFrame(updatePanelPosition);
-    const handlePointerDown = (event: MouseEvent) => {
-      const target = event.target as Node;
-      if (anchorRef.current?.contains(target) || panelRef.current?.contains(target)) {
-        return;
-      }
-      onClose();
-    };
-    const handleEscape = (event: KeyboardEvent) => {
-      if (event.key === "Escape") {
-        onClose();
-      }
-    };
-
-    window.addEventListener("resize", updatePanelPosition);
-    window.addEventListener("scroll", updatePanelPosition, true);
-    window.addEventListener("mousedown", handlePointerDown);
-    window.addEventListener("keydown", handleEscape);
-
-    return () => {
-      window.cancelAnimationFrame(rafId);
-      window.removeEventListener("resize", updatePanelPosition);
-      window.removeEventListener("scroll", updatePanelPosition, true);
-      window.removeEventListener("mousedown", handlePointerDown);
-      window.removeEventListener("keydown", handleEscape);
-    };
-  }, [anchorRef, isOpen, onClose, updatePanelPosition]);
+  const { panelRef, position } = useAnchoredOverlay<HTMLDivElement>({
+    open: isOpen,
+    onClose,
+    align: "end",
+    triggerRef: anchorRef,
+  });
 
   if (!isOpen) return null;
 
@@ -221,7 +179,7 @@ export function TimelineFilter({
   return createPortal(
     <div
       ref={panelRef}
-      style={{ position: "fixed", top: panelPosition.top, left: panelPosition.left }}
+      style={{ position: "fixed", top: position.top, left: position.left }}
       className="z-[9998] w-80 rounded-2xl border border-gray-200 bg-white p-4 shadow-xl dark:border-gray-700 dark:bg-gray-900"
     >
       <div className="mb-4 flex items-center justify-between">
diff --git a/apps/web/src/components/timeline/TimelineProjectPanel.tsx b/apps/web/src/components/timeline/TimelineProjectPanel.tsx
index e6caa68..d67515f 100644
--- a/apps/web/src/components/timeline/TimelineProjectPanel.tsx
+++ b/apps/web/src/components/timeline/TimelineProjectPanel.tsx
@@ -188,8 +188,10 @@ function TimelineProjectPanelInner({
   } | null>(null);
   const heatmapTooltipRef = useRef<HTMLDivElement | null>(null);
   const vacationTooltipRef = useRef<HTMLDivElement | null>(null);
+  const demandTooltipRef = useRef<HTMLDivElement | null>(null);
   const heatmapTooltipPosRef = useRef({ left: 0, top: 0 });
   const vacationTooltipPosRef = useRef({ left: 0, top: 0 });
+  const demandTooltipPosRef = useRef({ left: 0, top: 0 });
 
   const [heatmapHover, setHeatmapHover] = useState<{
     date: Date;
@@ -206,6 +208,22 @@ function TimelineProjectPanelInner({
     approvedBy?: { name?: string | null; email: string } | null;
     approvedAt?: Date | string | null;
   }>(null);
+  const [demandHover, setDemandHover] = useState<null | {
+    roleName: string;
+    roleColor: string;
+    projectName: string;
+    projectShortCode?: string | null;
+    requestedHeadcount: number;
+    unfilledHeadcount: number;
+    startDate: Date | string;
+    endDate: Date | string;
+    hoursPerDay: number;
+    totalHours: number;
+    percentage?: number;
+    status?: string;
+    totalCostCents?: number;
+    dailyCostCents?: number;
+  }>(null);
 
   const { resourceHeatmapById, resourceTotalHoursById } = useMemo(() => {
     const dateIndexByTime = new Map<number, number>();
@@ -472,6 +490,7 @@ function TimelineProjectPanelInner({
       vacationHoverRafRef.current = requestAnimationFrame(() => {
         vacationHoverRafRef.current = null;
         const date = xToDate(clientX, rect);
+        date.setHours(0, 0, 0, 0);
         const time = date.getTime();
         const resourceVacations = vacationsByResource.get(resourceId) ?? [];
         const hit =
@@ -507,18 +526,58 @@ function TimelineProjectPanelInner({
 
     const shouldClearHeatmap = lastHeatmapDayRef.current !== -1;
     const shouldClearVacation = hoveredVacationKeyRef.current !== null;
+    const shouldClearDemand = demandHover !== null;
 
     lastHeatmapDayRef.current = -1;
     lastHeatmapResourceRef.current = null;
     hoveredVacationKeyRef.current = null;
 
-    if (shouldClearHeatmap || shouldClearVacation) {
+    if (shouldClearHeatmap || shouldClearVacation || shouldClearDemand) {
       startTransition(() => {
         if (shouldClearHeatmap) setHeatmapHover(null);
         if (shouldClearVacation) setVacationHover(null);
+        if (shouldClearDemand) setDemandHover(null);
       });
     }
-  }, []);
+  }, [demandHover]);
+
+  const handleDemandHoverMove = useCallback(
+    (e: React.MouseEvent, demand: TimelineDemandEntry) => {
+      demandTooltipPosRef.current = { left: e.clientX + 16, top: e.clientY - 36 };
+      if (demandTooltipRef.current) {
+        demandTooltipRef.current.style.left = `${demandTooltipPosRef.current.left}px`;
+        demandTooltipRef.current.style.top = `${demandTooltipPosRef.current.top}px`;
+      }
+
+      const startDate = new Date(demand.startDate);
+      const endDate = new Date(demand.endDate);
+      const days = Math.max(1, Math.round((endDate.getTime() - startDate.getTime()) / 86_400_000) + 1);
+
+      startTransition(() => {
+        setDemandHover({
+          roleName: demand.roleEntity?.name ?? demand.role ?? "Open demand",
+          roleColor: demand.roleEntity?.color ?? "#f59e0b",
+          projectName: demand.project.name,
+          projectShortCode: demand.project.shortCode,
+          requestedHeadcount: demand.requestedHeadcount,
+          unfilledHeadcount: demand.unfilledHeadcount,
+          startDate: demand.startDate,
+          endDate: demand.endDate,
+          hoursPerDay: demand.hoursPerDay,
+          totalHours: demand.hoursPerDay * days,
+          percentage: demand.percentage,
+          status: demand.status,
+          ...(demand.dailyCostCents > 0
+            ? {
+                totalCostCents: demand.dailyCostCents * days,
+                dailyCostCents: demand.dailyCostCents,
+              }
+            : {}),
+        });
+      });
+    },
+    [],
+  );
 
   useEffect(
     () => () => {
@@ -672,6 +731,8 @@ function TimelineProjectPanelInner({
                 onAllocMouseDown,
                 onAllocTouchStart,
                 onAllocationContextMenu,
+                handleDemandHoverMove,
+                clearHoverTooltips,
                 multiSelectState,
                 allocDragState,
               )
@@ -699,6 +760,9 @@ function TimelineProjectPanelInner({
                 </div>
 
                 <div
+                  data-testid="timeline-project-resource-row-canvas"
+                  data-project-id={row.project.id}
+                  data-resource-id={row.resource.id}
                   className="relative overflow-hidden touch-none"
                   style={{
                     width: totalCanvasWidth,
@@ -792,8 +856,11 @@ function TimelineProjectPanelInner({
         heatmapTooltipPos={heatmapTooltipPosRef.current}
         vacationTooltipRef={vacationTooltipRef}
         vacationTooltipPos={vacationTooltipPosRef.current}
+        demandTooltipRef={demandTooltipRef}
+        demandTooltipPos={demandTooltipPosRef.current}
         heatmapHover={heatmapHover}
         vacationHover={vacationHover}
+        demandHover={demandHover}
       />
     </div>
   );
@@ -852,6 +919,8 @@ function renderOpenDemandRow(
     anchorX: number,
     anchorY: number,
   ) => void,
+  onDemandHoverMove: (e: React.MouseEvent, demand: TimelineDemandEntry) => void,
+  onClearHoverTooltips: () => void,
   multiSelectState: MultiSelectState,
   allocDragState: AllocDragState,
 ) {
@@ -889,6 +958,7 @@ function renderOpenDemandRow(
       <div
         className="relative overflow-hidden bg-amber-50 touch-none dark:bg-slate-950"
         style={{ width: totalCanvasWidth, height: rowHeight }}
+        onMouseLeave={onClearHoverTooltips}
       >
         {rowGridLines}
         <div className="pointer-events-none absolute inset-x-0 inset-y-0 border-y border-dashed border-amber-200/70 dark:border-amber-800/80" />
@@ -962,7 +1032,6 @@ function renderOpenDemandRow(
                   : "hover:ring-2 hover:ring-amber-400 hover:ring-offset-1",
                 multiSelectState.selectedAllocationIds.includes(alloc.id) && "ring-2 ring-sky-500 ring-offset-1 z-20",
               )}
-              title={`${roleName}${headcount > 1 ? ` x${headcount}` : ""} · ${alloc.hoursPerDay}h/day · ${formatDateLong(allocStart)} – ${formatDateLong(allocEnd)}`}
               style={{
                 left: left + 2,
                 width: width - 4,
@@ -986,6 +1055,7 @@ function renderOpenDemandRow(
                   e.clientY,
                 );
               }}
+              onMouseMove={(e) => onDemandHoverMove(e, alloc)}
             >
               {/* Left resize handle */}
               <div
diff --git a/apps/web/src/components/timeline/TimelineQuickFilters.tsx b/apps/web/src/components/timeline/TimelineQuickFilters.tsx
index 7c16c1f..25f980a 100644
--- a/apps/web/src/components/timeline/TimelineQuickFilters.tsx
+++ b/apps/web/src/components/timeline/TimelineQuickFilters.tsx
@@ -1,8 +1,9 @@
 "use client";
 
 import { createPortal } from "react-dom";
-import { useCallback, useEffect, useMemo, useRef, useState, type ReactNode } from "react";
+import { useMemo, useState, type ReactNode } from "react";
 import { InfoTooltip } from "~/components/ui/InfoTooltip.js";
+import { useAnchoredOverlay } from "~/hooks/useAnchoredOverlay.js";
 import { trpc } from "~/lib/trpc/client.js";
 import type { TimelineFilters } from "./TimelineFilter.js";
 
@@ -20,68 +21,22 @@ function TimelineFilterDropdown({
   tooltipContent?: ReactNode;
 }) {
   const [isOpen, setIsOpen] = useState(false);
-  const dropdownRef = useRef<HTMLDivElement | null>(null);
-  const panelRef = useRef<HTMLDivElement | null>(null);
-  const [panelPosition, setPanelPosition] = useState({ top: 0, left: 0, minWidth: 0 });
-
-  const updatePanelPosition = useCallback(() => {
-    const trigger = dropdownRef.current;
-    if (!trigger) return;
-
-    const rect = trigger.getBoundingClientRect();
-    const panelWidth = panelRef.current?.offsetWidth ?? rect.width;
-    const viewportPadding = 16;
-    const maxLeft = Math.max(viewportPadding, window.innerWidth - panelWidth - viewportPadding);
-
-    setPanelPosition({
-      top: rect.bottom + 8,
-      left: Math.min(Math.max(rect.left, viewportPadding), maxLeft),
-      minWidth: rect.width,
-    });
-  }, []);
-
-  useEffect(() => {
-    function handlePointerDown(event: MouseEvent) {
-      const target = event.target as Node;
-      if (dropdownRef.current?.contains(target) || panelRef.current?.contains(target)) {
-        return;
-      }
-      setIsOpen(false);
-    }
-
-    document.addEventListener("mousedown", handlePointerDown);
-    return () => document.removeEventListener("mousedown", handlePointerDown);
-  }, []);
-
-  useEffect(() => {
-    if (!isOpen) return;
-
-    updatePanelPosition();
-    const rafId = window.requestAnimationFrame(updatePanelPosition);
-    const handleEscape = (event: KeyboardEvent) => {
-      if (event.key === "Escape") {
-        setIsOpen(false);
-      }
-    };
-
-    window.addEventListener("resize", updatePanelPosition);
-    window.addEventListener("scroll", updatePanelPosition, true);
-    window.addEventListener("keydown", handleEscape);
-
-    return () => {
-      window.cancelAnimationFrame(rafId);
-      window.removeEventListener("resize", updatePanelPosition);
-      window.removeEventListener("scroll", updatePanelPosition, true);
-      window.removeEventListener("keydown", handleEscape);
-    };
-  }, [isOpen, updatePanelPosition]);
+  const { triggerRef, panelRef, position, handleOpenChange } = useAnchoredOverlay<HTMLDivElement>({
+    open: isOpen,
+    onClose: () => setIsOpen(false),
+    matchTriggerWidth: true,
+  });
 
   return (
-    <div ref={dropdownRef} className="relative">
+    <div ref={triggerRef} className="relative">
       <div className="flex items-center gap-2">
         <button
           type="button"
-          onClick={() => setIsOpen((current) => !current)}
+          onClick={() => {
+            const nextOpen = !isOpen;
+            handleOpenChange(nextOpen);
+            setIsOpen(nextOpen);
+          }}
           className={`inline-flex items-center justify-between gap-3 rounded-xl border border-gray-300 bg-white px-3 py-2 text-sm text-gray-700 shadow-sm transition hover:border-gray-400 hover:bg-gray-50 dark:border-gray-600 dark:bg-gray-900 dark:text-gray-200 dark:hover:bg-gray-800 ${buttonClassName}`}
         >
           <span className="text-left">{label}</span>
@@ -95,9 +50,9 @@ function TimelineFilterDropdown({
             ref={panelRef}
             style={{
               position: "fixed",
-              top: panelPosition.top,
-              left: panelPosition.left,
-              minWidth: panelPosition.minWidth,
+              top: position.top,
+              left: position.left,
+              minWidth: position.minWidth,
             }}
             className={`z-[9998] rounded-2xl border border-gray-200 bg-white p-3 shadow-xl dark:border-gray-700 dark:bg-gray-900 ${widthClassName}`}
           >
diff --git a/apps/web/src/components/timeline/TimelineResourcePanel.tsx b/apps/web/src/components/timeline/TimelineResourcePanel.tsx
index 4e3a175..7a4c60d 100644
--- a/apps/web/src/components/timeline/TimelineResourcePanel.tsx
+++ b/apps/web/src/components/timeline/TimelineResourcePanel.tsx
@@ -359,6 +359,7 @@ function TimelineResourcePanelInner({
       vacationHoverRafRef.current = requestAnimationFrame(() => {
         vacationHoverRafRef.current = null;
         const date = xToDate(clientX, rect);
+        date.setHours(0, 0, 0, 0);
         const t = date.getTime();
         const resourceVacations = vacationsByResource.get(resourceId) ?? [];
         const hit =
@@ -494,6 +495,10 @@ function TimelineResourcePanelInner({
 
               {/* Row canvas */}
               <div
+                data-testid="timeline-resource-row-canvas"
+                data-resource-id={resource.id}
+                data-resource-eid={resource.eid}
+                data-resource-name={resource.displayName}
                 className="relative overflow-hidden touch-none"
                 style={{ width: totalCanvasWidth, height: rowHeight, touchAction: "none" }}
                 onMouseDown={(e) => {
@@ -542,10 +547,11 @@ function TimelineResourcePanelInner({
                       onAllocationContextMenu,
                       multiSelectState,
                     )}
-                {renderVacationBlocks(
-                  vacationBlocksByResource.get(resource.id) ?? [],
-                  rowHeight,
-                )}
+                {filters.showVacations &&
+                  renderVacationBlocks(
+                    vacationBlocksByResource.get(resource.id) ?? [],
+                    rowHeight,
+                  )}
                 {displayMode === "strip" && renderLoadGraph(allocs, dates, CELL_WIDTH)}
                 {displayMode === "heatmap" &&
                   renderHeatmapOverlay(allocs, dates, CELL_WIDTH, heatmapScheme)}
diff --git a/apps/web/src/components/timeline/TimelineTooltip.tsx b/apps/web/src/components/timeline/TimelineTooltip.tsx
index 3281755..54abdce 100644
--- a/apps/web/src/components/timeline/TimelineTooltip.tsx
+++ b/apps/web/src/components/timeline/TimelineTooltip.tsx
@@ -1,6 +1,13 @@
 "use client";
 
-import { formatDateLong } from "~/lib/format.js";
+import { formatCents, formatDateLong } from "~/lib/format.js";
+
+function getVacationTitle(vacation: VacationHoverData): string {
+  if (vacation.type === "PUBLIC_HOLIDAY" && vacation.note) {
+    return vacation.note;
+  }
+  return vacation.type.replaceAll("_", " ");
+}
 
 export type HeatmapHoverData = {
   date: Date;
@@ -30,6 +37,23 @@ export type VacationHoverData = {
   approvedAt?: Date | string | null;
 };
 
+export type DemandHoverData = {
+  roleName: string;
+  roleColor: string;
+  projectName: string;
+  projectShortCode?: string | null;
+  requestedHeadcount: number;
+  unfilledHeadcount: number;
+  startDate: Date | string;
+  endDate: Date | string;
+  hoursPerDay: number;
+  totalHours: number;
+  percentage?: number;
+  status?: string;
+  totalCostCents?: number;
+  dailyCostCents?: number;
+};
+
 interface TimelineTooltipProps {
   heatmapTooltipRef: React.RefObject<HTMLDivElement | null>;
   heatmapTooltipPos: { left: number; top: number };
@@ -37,6 +61,9 @@ interface TimelineTooltipProps {
   vacationTooltipPos: { left: number; top: number };
   heatmapHover: HeatmapHoverData | null;
   vacationHover: VacationHoverData | null;
+  demandTooltipRef?: React.RefObject<HTMLDivElement | null>;
+  demandTooltipPos?: { left: number; top: number };
+  demandHover?: DemandHoverData | null;
 }
 
 export function TimelineTooltip({
@@ -46,7 +73,87 @@ export function TimelineTooltip({
   vacationTooltipPos,
   heatmapHover,
   vacationHover,
+  demandTooltipRef,
+  demandTooltipPos,
+  demandHover,
 }: TimelineTooltipProps) {
+  const vacationTitle = vacationHover ? getVacationTitle(vacationHover) : null;
+
+  if (demandHover && demandTooltipRef && demandTooltipPos) {
+    return (
+      <div
+        ref={demandTooltipRef}
+        style={{
+          left: demandTooltipPos.left,
+          top: demandTooltipPos.top,
+          backgroundColor: "rgba(3, 7, 18, 0.96)",
+        }}
+        className="fixed z-40 max-w-sm pointer-events-none rounded-xl border border-gray-800 bg-gray-950/96 px-3 py-2 text-xs text-white shadow-2xl"
+      >
+        <div className="flex items-start justify-between gap-3">
+          <div className="min-w-0">
+            <div className="flex items-center gap-1.5">
+              <span
+                className="inline-block h-2 w-2 rounded-full flex-shrink-0"
+                style={{ backgroundColor: demandHover.roleColor }}
+              />
+              <span className="truncate font-semibold">{demandHover.roleName}</span>
+            </div>
+            <div className="truncate text-[11px] text-gray-400">
+              {demandHover.projectShortCode ? `${demandHover.projectShortCode} · ` : ""}
+              {demandHover.projectName}
+            </div>
+          </div>
+          {demandHover.status ? (
+            <span className="text-[10px] uppercase tracking-wide text-amber-300">
+              {demandHover.status}
+            </span>
+          ) : null}
+        </div>
+
+        <div className="mt-2 grid grid-cols-2 gap-x-4 gap-y-1.5 text-[11px]">
+          <div>
+            <div className="text-gray-500">Requested</div>
+            <div className="font-medium text-gray-100">{demandHover.requestedHeadcount}</div>
+          </div>
+          <div>
+            <div className="text-gray-500">Open</div>
+            <div className="font-medium text-amber-300">{demandHover.unfilledHeadcount}</div>
+          </div>
+          <div>
+            <div className="text-gray-500">Range</div>
+            <div className="font-medium text-gray-100">
+              {formatDateLong(demandHover.startDate)} to {formatDateLong(demandHover.endDate)}
+            </div>
+          </div>
+          <div>
+            <div className="text-gray-500">Load</div>
+            <div className="font-medium text-gray-100">
+              {demandHover.hoursPerDay}h/day · {demandHover.totalHours}h
+            </div>
+          </div>
+          {typeof demandHover.percentage === "number" && demandHover.percentage > 0 ? (
+            <div>
+              <div className="text-gray-500">Allocation</div>
+              <div className="font-medium text-gray-100">{demandHover.percentage}%</div>
+            </div>
+          ) : null}
+          {typeof demandHover.totalCostCents === "number" && demandHover.totalCostCents > 0 ? (
+            <div>
+              <div className="text-gray-500">Cost</div>
+              <div className="font-medium text-gray-100">
+                {formatCents(demandHover.totalCostCents)} EUR
+                {typeof demandHover.dailyCostCents === "number" && demandHover.dailyCostCents > 0
+                  ? ` · ${formatCents(demandHover.dailyCostCents)}/d`
+                  : ""}
+              </div>
+            </div>
+          ) : null}
+        </div>
+      </div>
+    );
+  }
+
   // When both are active, render a single merged tooltip using the heatmap position
   if (heatmapHover && vacationHover) {
     return (
@@ -114,14 +221,12 @@ export function TimelineTooltip({
         <div className="mt-2 pt-2 border-t border-amber-700/40">
           <div className="flex items-center gap-1.5">
             <span className="inline-block w-2 h-2 rounded-full bg-amber-500 flex-shrink-0" />
-            <span className="font-semibold text-amber-300">
-              {vacationHover.type.replaceAll("_", " ")}
-            </span>
+            <span className="font-semibold text-amber-300">{vacationTitle}</span>
           </div>
           <div className="mt-0.5 text-[11px] text-amber-200/80">
             {formatDateLong(vacationHover.startDate)} to {formatDateLong(vacationHover.endDate)}
           </div>
-          {vacationHover.note ? (
+          {vacationHover.note && vacationHover.type !== "PUBLIC_HOLIDAY" ? (
             <div className="mt-1 text-[11px] text-amber-200/60">{vacationHover.note}</div>
           ) : null}
         </div>
@@ -200,11 +305,11 @@ export function TimelineTooltip({
         }}
         className="fixed z-40 max-w-xs pointer-events-none rounded-xl border border-amber-700/50 bg-amber-950/95 px-3 py-2 text-xs text-amber-50 shadow-2xl"
       >
-        <div className="font-semibold">{vacationHover.type.replaceAll("_", " ")}</div>
+        <div className="font-semibold">{vacationTitle}</div>
         <div className="mt-1 text-[11px] text-amber-100/90">
           {formatDateLong(vacationHover.startDate)} to {formatDateLong(vacationHover.endDate)}
         </div>
-        {vacationHover.note ? (
+        {vacationHover.note && vacationHover.type !== "PUBLIC_HOLIDAY" ? (
           <div className="mt-2 text-[11px] text-amber-100/80">{vacationHover.note}</div>
         ) : null}
       </div>
diff --git a/apps/web/src/components/timeline/renderHelpers.tsx b/apps/web/src/components/timeline/renderHelpers.tsx
index 23ed8fe..1988f9d 100644
--- a/apps/web/src/components/timeline/renderHelpers.tsx
+++ b/apps/web/src/components/timeline/renderHelpers.tsx
@@ -35,6 +35,11 @@ export function renderVacationBlocks(blocks: VacationBlockInfo[], rowHeight: num
     return (
       <div
         key={`vac-${v.id}`}
+        data-testid="timeline-vacation-block"
+        data-vacation-id={v.id}
+        data-vacation-type={v.type}
+        data-vacation-status={v.status}
+        data-vacation-note={v.note ?? ""}
         className={clsx(
           "absolute z-[5] flex items-end px-1 pb-0.5 overflow-hidden pointer-events-none",
           colorClass,
diff --git a/apps/web/src/components/ui/ColumnTogglePanel.tsx b/apps/web/src/components/ui/ColumnTogglePanel.tsx
index 1334a35..4faa70f 100644
--- a/apps/web/src/components/ui/ColumnTogglePanel.tsx
+++ b/apps/web/src/components/ui/ColumnTogglePanel.tsx
@@ -1,7 +1,9 @@
 "use client";
 
-import { useState, useRef, useEffect, useCallback } from "react";
+import { createPortal } from "react-dom";
+import { useState, useRef, useCallback } from "react";
 import type { ColumnDef } from "@capakraken/shared";
+import { useAnchoredOverlay } from "~/hooks/useAnchoredOverlay.js";
 
 interface ColumnTogglePanelProps {
   allColumns: ColumnDef[];
@@ -17,18 +19,11 @@ export function ColumnTogglePanel({
   defaultKeys,
 }: ColumnTogglePanelProps) {
   const [open, setOpen] = useState(false);
-  const panelRef = useRef<HTMLDivElement>(null);
-
-  useEffect(() => {
-    if (!open) return;
-    function handleClick(e: MouseEvent) {
-      if (panelRef.current && !panelRef.current.contains(e.target as Node)) {
-        setOpen(false);
-      }
-    }
-    document.addEventListener("mousedown", handleClick);
-    return () => document.removeEventListener("mousedown", handleClick);
-  }, [open]);
+  const { triggerRef, panelRef, position, handleOpenChange } = useAnchoredOverlay<HTMLButtonElement>({
+    open,
+    onClose: () => setOpen(false),
+    align: "end",
+  });
 
   const dragKey = useRef<string | null>(null);
 
@@ -59,11 +54,20 @@ export function ColumnTogglePanel({
   const builtins = allColumns.filter((c) => !c.isCustom);
   const customs  = allColumns.filter((c) =>  c.isCustom);
 
+  const handleToggleOpen = useCallback(() => {
+    setOpen((current) => {
+      const nextOpen = !current;
+      handleOpenChange(nextOpen);
+      return nextOpen;
+    });
+  }, [handleOpenChange]);
+
   return (
-    <div className="relative" ref={panelRef}>
+    <div className="relative">
       <button
+        ref={triggerRef}
         type="button"
-        onClick={() => setOpen((o) => !o)}
+        onClick={handleToggleOpen}
         title="Toggle columns"
         className={`p-1.5 rounded-lg border text-sm transition-colors ${
           open
@@ -80,83 +84,107 @@ export function ColumnTogglePanel({
         </svg>
       </button>
 
-      {open && (
-        <div className="absolute right-0 top-full mt-1 z-50 w-52 bg-white border border-gray-200 rounded-xl shadow-xl py-2">
-          <div className="px-3 pb-1 flex items-center justify-between">
-            <span className="text-xs font-semibold text-gray-500 uppercase tracking-wide">Columns</span>
-            <button
-              type="button"
-              onClick={reset}
-              className="text-xs text-brand-600 hover:text-brand-800"
-            >
-              Reset
-            </button>
-          </div>
+      {open &&
+        createPortal(
+          <div
+            ref={panelRef}
+            className="fixed z-[9998] w-52 rounded-xl border border-gray-200 bg-white py-2 shadow-xl dark:border-gray-700 dark:bg-gray-900"
+            style={{ top: position.top, left: position.left }}
+          >
+            <div className="flex items-center justify-between px-3 pb-1">
+              <span className="text-xs font-semibold uppercase tracking-wide text-gray-500">
+                Columns
+              </span>
+              <button
+                type="button"
+                onClick={reset}
+                className="text-xs text-brand-600 hover:text-brand-800"
+              >
+                Reset
+              </button>
+            </div>
 
-          <div className="max-h-72 overflow-y-auto">
-            {builtins.map((col) => {
-              const isVisible = visibleKeys.includes(col.key);
-              return (
-                <div
-                  key={col.key}
-                  draggable={col.hideable && isVisible}
-                  onDragStart={() => { dragKey.current = col.key; }}
-                  onDragOver={(e) => { e.preventDefault(); }}
-                  onDrop={() => { if (dragKey.current) reorder(dragKey.current, col.key); dragKey.current = null; }}
-                  className={`flex items-center gap-2 px-3 py-1.5 hover:bg-gray-50 ${
-                    !col.hideable ? "opacity-50" : "cursor-grab"
-                  }`}
-                >
-                  {col.hideable && isVisible && (
-                    <span className="text-gray-300 text-xs select-none">⠿</span>
-                  )}
-                  <label className="flex items-center gap-2 flex-1 cursor-pointer">
-                    <input
-                      type="checkbox"
-                      checked={isVisible}
-                      onChange={() => toggle(col.key)}
-                      disabled={!col.hideable}
-                      className="rounded border-gray-300 text-brand-600 focus:ring-brand-500"
-                    />
-                    <span className="text-sm text-gray-700">{col.label}</span>
-                  </label>
-                </div>
-              );
-            })}
+            <div className="max-h-72 overflow-y-auto">
+              {builtins.map((col) => {
+                const isVisible = visibleKeys.includes(col.key);
+                return (
+                  <div
+                    key={col.key}
+                    draggable={col.hideable && isVisible}
+                    onDragStart={() => {
+                      dragKey.current = col.key;
+                    }}
+                    onDragOver={(event) => {
+                      event.preventDefault();
+                    }}
+                    onDrop={() => {
+                      if (dragKey.current) reorder(dragKey.current, col.key);
+                      dragKey.current = null;
+                    }}
+                    className={`flex items-center gap-2 px-3 py-1.5 hover:bg-gray-50 dark:hover:bg-gray-800 ${
+                      !col.hideable ? "opacity-50" : "cursor-grab"
+                    }`}
+                  >
+                    {col.hideable && isVisible && (
+                      <span className="select-none text-xs text-gray-300">⠿</span>
+                    )}
+                    <label className="flex flex-1 cursor-pointer items-center gap-2">
+                      <input
+                        type="checkbox"
+                        checked={isVisible}
+                        onChange={() => toggle(col.key)}
+                        disabled={!col.hideable}
+                        className="rounded border-gray-300 text-brand-600 focus:ring-brand-500"
+                      />
+                      <span className="text-sm text-gray-700 dark:text-gray-200">{col.label}</span>
+                    </label>
+                  </div>
+                );
+              })}
 
-            {customs.length > 0 && (
-              <>
-                <div className="my-1 border-t border-gray-100" />
-                <p className="px-3 py-1 text-xs text-gray-400 font-medium">Custom Fields</p>
-                {customs.map((col) => {
-                  const isVisible = visibleKeys.includes(col.key);
-                  return (
-                    <div
-                      key={col.key}
-                      draggable={isVisible}
-                      onDragStart={() => { dragKey.current = col.key; }}
-                      onDragOver={(e) => { e.preventDefault(); }}
-                      onDrop={() => { if (dragKey.current) reorder(dragKey.current, col.key); dragKey.current = null; }}
-                      className="flex items-center gap-2 px-3 py-1.5 hover:bg-gray-50 cursor-grab"
-                    >
-                      {isVisible && <span className="text-gray-300 text-xs select-none">⠿</span>}
-                      <label className="flex items-center gap-2 flex-1 cursor-pointer">
-                        <input
-                          type="checkbox"
-                          checked={isVisible}
-                          onChange={() => toggle(col.key)}
-                          className="rounded border-gray-300 text-brand-600 focus:ring-brand-500"
-                        />
-                        <span className="text-sm text-gray-700">{col.label}</span>
-                      </label>
-                    </div>
-                  );
-                })}
-              </>
-            )}
-          </div>
-        </div>
-      )}
+              {customs.length > 0 && (
+                <>
+                  <div className="my-1 border-t border-gray-100 dark:border-gray-800" />
+                  <p className="px-3 py-1 text-xs font-medium text-gray-400">Custom Fields</p>
+                  {customs.map((col) => {
+                    const isVisible = visibleKeys.includes(col.key);
+                    return (
+                      <div
+                        key={col.key}
+                        draggable={isVisible}
+                        onDragStart={() => {
+                          dragKey.current = col.key;
+                        }}
+                        onDragOver={(event) => {
+                          event.preventDefault();
+                        }}
+                        onDrop={() => {
+                          if (dragKey.current) reorder(dragKey.current, col.key);
+                          dragKey.current = null;
+                        }}
+                        className="flex cursor-grab items-center gap-2 px-3 py-1.5 hover:bg-gray-50 dark:hover:bg-gray-800"
+                      >
+                        {isVisible && <span className="select-none text-xs text-gray-300">⠿</span>}
+                        <label className="flex flex-1 cursor-pointer items-center gap-2">
+                          <input
+                            type="checkbox"
+                            checked={isVisible}
+                            onChange={() => toggle(col.key)}
+                            className="rounded border-gray-300 text-brand-600 focus:ring-brand-500"
+                          />
+                          <span className="text-sm text-gray-700 dark:text-gray-200">
+                            {col.label}
+                          </span>
+                        </label>
+                      </div>
+                    );
+                  })}
+                </>
+              )}
+            </div>
+          </div>,
+          document.body,
+        )}
     </div>
   );
 }
diff --git a/apps/web/src/components/vacations/HolidayCalendarEditor.tsx b/apps/web/src/components/vacations/HolidayCalendarEditor.tsx
new file mode 100644
index 0000000..ed6db9a
--- /dev/null
+++ b/apps/web/src/components/vacations/HolidayCalendarEditor.tsx
@@ -0,0 +1,865 @@
+"use client";
+
+import { useEffect, useMemo, useState } from "react";
+import { trpc } from "~/lib/trpc/client.js";
+
+type ScopeType = "COUNTRY" | "STATE" | "CITY";
+
+type CalendarRow = {
+  id: string;
+  name: string;
+  scopeType: ScopeType;
+  stateCode: string | null;
+  metroCityId: string | null;
+  isActive: boolean;
+  priority: number;
+  country: { id: string; code: string; name: string };
+  metroCity: { id: string; name: string } | null;
+  entries: Array<{
+    id: string;
+    date: string | Date;
+    name: string;
+    isRecurringAnnual: boolean;
+    source: string | null;
+  }>;
+  _count?: { entries: number };
+};
+
+type CountryRow = {
+  id: string;
+  code: string;
+  name: string;
+  metroCities: { id: string; name: string }[];
+};
+
+const SCOPE_LABELS: Record<ScopeType, string> = {
+  COUNTRY: "Land",
+  STATE: "Bundesland/Region",
+  CITY: "Stadt",
+};
+
+function formatDate(value: string | Date): string {
+  return new Date(value).toISOString().slice(0, 10);
+}
+
+export function HolidayCalendarEditor() {
+  const utils = trpc.useUtils();
+  const [selectedCalendarId, setSelectedCalendarId] = useState<string | null>(null);
+  const [scopeType, setScopeType] = useState<ScopeType>("COUNTRY");
+  const [countryId, setCountryId] = useState("");
+  const [stateCode, setStateCode] = useState("");
+  const [metroCityId, setMetroCityId] = useState("");
+  const [name, setName] = useState("");
+  const [priority, setPriority] = useState(0);
+  const [entryDate, setEntryDate] = useState("");
+  const [entryName, setEntryName] = useState("");
+  const [entryRecurring, setEntryRecurring] = useState(false);
+  const [entrySource, setEntrySource] = useState("");
+  const [previewYear, setPreviewYear] = useState(new Date().getFullYear());
+  const [error, setError] = useState<string | null>(null);
+  const [calendarDraft, setCalendarDraft] = useState({
+    name: "",
+    priority: 0,
+    stateCode: "",
+    metroCityId: "",
+    isActive: true,
+  });
+  const [editingEntryId, setEditingEntryId] = useState<string | null>(null);
+  const [entryDraft, setEntryDraft] = useState({
+    date: "",
+    name: "",
+    isRecurringAnnual: false,
+    source: "",
+  });
+
+  const { data: countries } = trpc.country.list.useQuery();
+  const { data: calendars } = trpc.holidayCalendar.listCalendars.useQuery({ includeInactive: true });
+
+  const selectedCalendar = ((calendars ?? []) as unknown as CalendarRow[]).find((calendar) => calendar.id === selectedCalendarId) ?? null;
+
+  const selectedCountry = useMemo(() => {
+    const rows = (countries ?? []) as unknown as CountryRow[];
+    return rows.find((country) => country.id === countryId) ?? null;
+  }, [countries, countryId]);
+
+  const selectedCalendarCountry = useMemo(() => {
+    const rows = (countries ?? []) as unknown as CountryRow[];
+    return rows.find((country) => country.id === selectedCalendar?.country.id) ?? null;
+  }, [countries, selectedCalendar]);
+
+  const previewQuery = trpc.holidayCalendar.previewResolvedHolidays.useQuery(
+    {
+      countryId: selectedCalendar?.country.id ?? countryId,
+      year: previewYear,
+      ...(selectedCalendar?.stateCode ? { stateCode: selectedCalendar.stateCode } : {}),
+      ...(selectedCalendar?.metroCityId ? { metroCityId: selectedCalendar.metroCityId } : {}),
+    },
+    {
+      enabled: Boolean(selectedCalendar?.country.id ?? countryId),
+      staleTime: 30_000,
+    },
+  );
+
+  const invalidate = async () => {
+    await Promise.all([
+      utils.holidayCalendar.listCalendars.invalidate(),
+      utils.holidayCalendar.getCalendarById.invalidate(),
+      utils.holidayCalendar.previewResolvedHolidays.invalidate(),
+    ]);
+  };
+
+  const createCalendar = trpc.holidayCalendar.createCalendar.useMutation({
+    onSuccess: async (calendar) => {
+      await invalidate();
+      setSelectedCalendarId(calendar.id);
+      setName("");
+      setStateCode("");
+      setMetroCityId("");
+      setPriority(0);
+      setError(null);
+    },
+    onError: (mutationError) => setError(mutationError.message),
+  });
+
+  const updateCalendar = trpc.holidayCalendar.updateCalendar.useMutation({
+    onSuccess: async () => {
+      await invalidate();
+      setError(null);
+    },
+    onError: (mutationError) => setError(mutationError.message),
+  });
+
+  const deleteCalendar = trpc.holidayCalendar.deleteCalendar.useMutation({
+    onSuccess: async () => {
+      await invalidate();
+      setSelectedCalendarId(null);
+      setError(null);
+    },
+    onError: (mutationError) => setError(mutationError.message),
+  });
+
+  const createEntry = trpc.holidayCalendar.createEntry.useMutation({
+    onSuccess: async () => {
+      await invalidate();
+      setEntryDate("");
+      setEntryName("");
+      setEntryRecurring(false);
+      setEntrySource("");
+      setError(null);
+    },
+    onError: (mutationError) => setError(mutationError.message),
+  });
+
+  const updateEntry = trpc.holidayCalendar.updateEntry.useMutation({
+    onSuccess: async () => {
+      await invalidate();
+      setEditingEntryId(null);
+      setError(null);
+    },
+    onError: (mutationError) => setError(mutationError.message),
+  });
+
+  const deleteEntry = trpc.holidayCalendar.deleteEntry.useMutation({
+    onSuccess: async () => {
+      await invalidate();
+      setError(null);
+    },
+    onError: (mutationError) => setError(mutationError.message),
+  });
+
+  const countryRows = (countries ?? []) as unknown as CountryRow[];
+  const calendarRows = (calendars ?? []) as unknown as CalendarRow[];
+  const isCreateScopeValid = scopeType === "COUNTRY"
+    ? Boolean(countryId && name.trim())
+    : scopeType === "STATE"
+      ? Boolean(countryId && name.trim() && stateCode.trim())
+      : Boolean(countryId && name.trim() && metroCityId);
+  const isCalendarDirty = selectedCalendar !== null && (
+    calendarDraft.name !== selectedCalendar.name
+    || calendarDraft.priority !== selectedCalendar.priority
+    || calendarDraft.isActive !== selectedCalendar.isActive
+    || calendarDraft.stateCode !== (selectedCalendar.stateCode ?? "")
+    || calendarDraft.metroCityId !== (selectedCalendar.metroCityId ?? "")
+  );
+
+  useEffect(() => {
+    if (!selectedCalendar) {
+      setCalendarDraft({
+        name: "",
+        priority: 0,
+        stateCode: "",
+        metroCityId: "",
+        isActive: true,
+      });
+      return;
+    }
+
+    setCalendarDraft({
+      name: selectedCalendar.name,
+      priority: selectedCalendar.priority,
+      stateCode: selectedCalendar.stateCode ?? "",
+      metroCityId: selectedCalendar.metroCityId ?? "",
+      isActive: selectedCalendar.isActive,
+    });
+    setEditingEntryId(null);
+  }, [selectedCalendar]);
+
+  function handleCreateCalendar(e: React.FormEvent) {
+    e.preventDefault();
+    setError(null);
+    if (!isCreateScopeValid) {
+      setError("Bitte alle Pflichtfelder fuer den gewaehlten Scope ausfuellen.");
+      return;
+    }
+    createCalendar.mutate({
+      name: name.trim(),
+      scopeType,
+      countryId,
+      ...(scopeType === "STATE" && stateCode.trim() ? { stateCode: stateCode.trim().toUpperCase() } : {}),
+      ...(scopeType === "CITY" && metroCityId ? { metroCityId } : {}),
+      priority,
+      isActive: true,
+    });
+  }
+
+  function handleAddEntry(e: React.FormEvent) {
+    e.preventDefault();
+    if (!selectedCalendarId) return;
+    if (!entryDate || !entryName.trim()) {
+      setError("Datum und Feiertagsname sind erforderlich.");
+      return;
+    }
+    createEntry.mutate({
+      holidayCalendarId: selectedCalendarId,
+      date: new Date(`${entryDate}T00:00:00.000Z`),
+      name: entryName.trim(),
+      isRecurringAnnual: entryRecurring,
+      ...(entrySource.trim() ? { source: entrySource.trim() } : {}),
+    });
+  }
+
+  function resetCalendarDraft() {
+    if (!selectedCalendar) {
+      return;
+    }
+
+    setCalendarDraft({
+      name: selectedCalendar.name,
+      priority: selectedCalendar.priority,
+      stateCode: selectedCalendar.stateCode ?? "",
+      metroCityId: selectedCalendar.metroCityId ?? "",
+      isActive: selectedCalendar.isActive,
+    });
+  }
+
+  function handleUpdateCalendar(e: React.FormEvent) {
+    e.preventDefault();
+    if (!selectedCalendar) {
+      return;
+    }
+
+    setError(null);
+    const normalizedStateCode = calendarDraft.stateCode.trim().toUpperCase();
+    if (selectedCalendar.scopeType === "STATE" && !normalizedStateCode) {
+      setError("State-Kalender benoetigen einen Regionscode.");
+      return;
+    }
+    if (selectedCalendar.scopeType === "CITY" && !calendarDraft.metroCityId) {
+      setError("City-Kalender benoetigen eine Stadtzuordnung.");
+      return;
+    }
+
+    updateCalendar.mutate({
+      id: selectedCalendar.id,
+      data: {
+        name: calendarDraft.name.trim(),
+        priority: calendarDraft.priority,
+        isActive: calendarDraft.isActive,
+        ...(selectedCalendar.scopeType === "STATE" ? { stateCode: normalizedStateCode } : {}),
+        ...(selectedCalendar.scopeType === "CITY" ? { metroCityId: calendarDraft.metroCityId } : {}),
+      },
+    });
+  }
+
+  function startEditingEntry(entry: CalendarRow["entries"][number]) {
+    setEditingEntryId(entry.id);
+    setEntryDraft({
+      date: formatDate(entry.date),
+      name: entry.name,
+      isRecurringAnnual: entry.isRecurringAnnual,
+      source: entry.source ?? "",
+    });
+  }
+
+  function handleUpdateEntry(entryId: string) {
+    if (!entryDraft.date || !entryDraft.name.trim()) {
+      setError("Ein Feiertagseintrag braucht Datum und Name.");
+      return;
+    }
+
+    setError(null);
+    updateEntry.mutate({
+      id: entryId,
+      data: {
+        date: new Date(`${entryDraft.date}T00:00:00.000Z`),
+        name: entryDraft.name.trim(),
+        isRecurringAnnual: entryDraft.isRecurringAnnual,
+        source: entryDraft.source.trim() || null,
+      },
+    });
+  }
+
+  function handleDeleteCalendar(calendar: CalendarRow) {
+    if (deleteCalendar.isPending) {
+      return;
+    }
+
+    const confirmed = globalThis.confirm(
+      `Feiertagskalender "${calendar.name}" wirklich loeschen? Alle Eintraege gehen dabei verloren.`,
+    );
+
+    if (!confirmed) {
+      return;
+    }
+
+    setError(null);
+    deleteCalendar.mutate({ id: calendar.id });
+  }
+
+  function handleDeleteEntry(entry: CalendarRow["entries"][number]) {
+    if (deleteEntry.isPending) {
+      return;
+    }
+
+    const confirmed = globalThis.confirm(
+      `Feiertag "${entry.name}" am ${formatDate(entry.date)} wirklich entfernen?`,
+    );
+
+    if (!confirmed) {
+      return;
+    }
+
+    setError(null);
+    deleteEntry.mutate({ id: entry.id });
+  }
+
+  return (
+    <div
+      data-testid="holiday-calendar-editor"
+      className="rounded-xl border border-gray-200 dark:border-gray-700 bg-white dark:bg-gray-800 p-5 space-y-5"
+    >
+      <div>
+        <h3 className="text-sm font-semibold text-gray-800 dark:text-gray-100">Holiday Calendar Editor</h3>
+        <p className="text-xs text-gray-500 dark:text-gray-400">
+          Pflege Feiertagskalender pro Land, Bundesland/Region oder Stadt. Die Vorschau zeigt den effektiv aufgeloesten Kalender fuer den gewaelten Scope.
+        </p>
+      </div>
+
+      {error && (
+        <div className="rounded-lg border border-red-200 bg-red-50 px-3 py-2 text-sm text-red-700 dark:border-red-800 dark:bg-red-950/30 dark:text-red-300">
+          {error}
+        </div>
+      )}
+
+      <div className="grid gap-5 lg:grid-cols-[1.1fr_1.4fr]">
+        <form onSubmit={handleCreateCalendar} className="space-y-4 rounded-xl border border-gray-200 dark:border-gray-700 p-4">
+          <div className="grid gap-3 md:grid-cols-2">
+            <label className="text-sm text-gray-600 dark:text-gray-300">
+              <span className="mb-1 block text-xs font-medium uppercase tracking-wide text-gray-500 dark:text-gray-400">Name</span>
+              <input
+                data-testid="holiday-calendar-name-input"
+                value={name}
+                onChange={(e) => setName(e.target.value)}
+                className="w-full rounded-lg border border-gray-300 bg-white px-3 py-2 text-sm dark:border-gray-600 dark:bg-gray-900 dark:text-gray-100"
+                placeholder="Bayern Feiertage"
+                required
+              />
+            </label>
+
+            <label className="text-sm text-gray-600 dark:text-gray-300">
+              <span className="mb-1 block text-xs font-medium uppercase tracking-wide text-gray-500 dark:text-gray-400">Scope</span>
+              <select
+                data-testid="holiday-calendar-scope-select"
+                value={scopeType}
+                onChange={(e) => setScopeType(e.target.value as ScopeType)}
+                className="w-full rounded-lg border border-gray-300 bg-white px-3 py-2 text-sm dark:border-gray-600 dark:bg-gray-900 dark:text-gray-100"
+              >
+                {Object.entries(SCOPE_LABELS).map(([value, label]) => (
+                  <option key={value} value={value}>{label}</option>
+                ))}
+              </select>
+            </label>
+          </div>
+
+          <div className="grid gap-3 md:grid-cols-2">
+            <label className="text-sm text-gray-600 dark:text-gray-300">
+              <span className="mb-1 block text-xs font-medium uppercase tracking-wide text-gray-500 dark:text-gray-400">Land</span>
+              <select
+                data-testid="holiday-calendar-country-select"
+                value={countryId}
+                onChange={(e) => {
+                  setCountryId(e.target.value);
+                  setMetroCityId("");
+                }}
+                className="w-full rounded-lg border border-gray-300 bg-white px-3 py-2 text-sm dark:border-gray-600 dark:bg-gray-900 dark:text-gray-100"
+                required
+              >
+                <option value="">Land waehlen</option>
+                {countryRows.map((country) => (
+                  <option key={country.id} value={country.id}>{country.name} ({country.code})</option>
+                ))}
+              </select>
+            </label>
+
+            <label className="text-sm text-gray-600 dark:text-gray-300">
+              <span className="mb-1 block text-xs font-medium uppercase tracking-wide text-gray-500 dark:text-gray-400">Prioritaet</span>
+              <input
+                data-testid="holiday-calendar-priority-input"
+                type="number"
+                value={priority}
+                onChange={(e) => setPriority(parseInt(e.target.value, 10) || 0)}
+                className="w-full rounded-lg border border-gray-300 bg-white px-3 py-2 text-sm dark:border-gray-600 dark:bg-gray-900 dark:text-gray-100"
+              />
+            </label>
+          </div>
+
+          {scopeType === "STATE" && (
+            <label className="text-sm text-gray-600 dark:text-gray-300">
+              <span className="mb-1 block text-xs font-medium uppercase tracking-wide text-gray-500 dark:text-gray-400">Bundesland/Region Code</span>
+              <input
+                data-testid="holiday-calendar-state-input"
+                value={stateCode}
+                onChange={(e) => setStateCode(e.target.value.toUpperCase())}
+                className="w-full rounded-lg border border-gray-300 bg-white px-3 py-2 text-sm dark:border-gray-600 dark:bg-gray-900 dark:text-gray-100"
+                placeholder="BY"
+                required
+              />
+            </label>
+          )}
+
+          {scopeType === "CITY" && (
+            <label className="text-sm text-gray-600 dark:text-gray-300">
+              <span className="mb-1 block text-xs font-medium uppercase tracking-wide text-gray-500 dark:text-gray-400">Stadt</span>
+              <select
+                data-testid="holiday-calendar-city-select"
+                value={metroCityId}
+                onChange={(e) => setMetroCityId(e.target.value)}
+                className="w-full rounded-lg border border-gray-300 bg-white px-3 py-2 text-sm dark:border-gray-600 dark:bg-gray-900 dark:text-gray-100"
+                required
+              >
+                <option value="">Stadt waehlen</option>
+                {(selectedCountry?.metroCities ?? []).map((city) => (
+                  <option key={city.id} value={city.id}>{city.name}</option>
+                ))}
+              </select>
+            </label>
+          )}
+
+          <button
+            data-testid="holiday-calendar-create-button"
+            type="submit"
+            disabled={createCalendar.isPending || !isCreateScopeValid}
+            className="rounded-lg bg-brand-600 px-4 py-2 text-sm font-medium text-white hover:bg-brand-700 disabled:opacity-50"
+          >
+            {createCalendar.isPending ? "Speichert..." : "Kalender anlegen"}
+          </button>
+        </form>
+
+        <div className="space-y-4">
+          <div className="rounded-xl border border-gray-200 dark:border-gray-700 overflow-hidden">
+            <table className="w-full text-sm">
+              <thead className="bg-gray-50 dark:bg-gray-900/60">
+                <tr>
+                  <th className="px-3 py-2 text-left text-xs font-medium uppercase tracking-wide text-gray-500">Kalender</th>
+                  <th className="px-3 py-2 text-left text-xs font-medium uppercase tracking-wide text-gray-500">Scope</th>
+                  <th className="px-3 py-2 text-left text-xs font-medium uppercase tracking-wide text-gray-500">Zuordnung</th>
+                  <th className="px-3 py-2 text-right text-xs font-medium uppercase tracking-wide text-gray-500">Eintraege</th>
+                </tr>
+              </thead>
+              <tbody>
+                {calendarRows.length === 0 && (
+                  <tr>
+                    <td colSpan={4} className="px-3 py-6 text-center text-sm text-gray-400">Noch keine Feiertagskalender vorhanden.</td>
+                  </tr>
+                )}
+                {calendarRows.map((calendar) => (
+                  <tr
+                    key={calendar.id}
+                    data-testid={`holiday-calendar-row-${calendar.id}`}
+                    className={`cursor-pointer border-t border-gray-200 dark:border-gray-700 ${selectedCalendarId === calendar.id ? "bg-brand-50 dark:bg-brand-950/20" : "hover:bg-gray-50 dark:hover:bg-gray-900/40"}`}
+                    onClick={() => setSelectedCalendarId(calendar.id)}
+                  >
+                    <td className="px-3 py-2">
+                      <div className="font-medium text-gray-900 dark:text-gray-100">{calendar.name}</div>
+                      <div className="text-xs text-gray-500">{calendar.country.name}</div>
+                    </td>
+                    <td className="px-3 py-2 text-gray-700 dark:text-gray-300">{SCOPE_LABELS[calendar.scopeType]}</td>
+                    <td className="px-3 py-2 text-gray-600 dark:text-gray-400">
+                      {calendar.scopeType === "COUNTRY" && calendar.country.code}
+                      {calendar.scopeType === "STATE" && calendar.stateCode}
+                      {calendar.scopeType === "CITY" && calendar.metroCity?.name}
+                    </td>
+                    <td className="px-3 py-2 text-right text-gray-600 dark:text-gray-400">{calendar._count?.entries ?? calendar.entries.length}</td>
+                  </tr>
+                ))}
+              </tbody>
+            </table>
+          </div>
+
+          {selectedCalendar && (
+            <div className="grid gap-4 xl:grid-cols-[1.15fr_0.85fr]">
+              <div className="space-y-4 rounded-xl border border-gray-200 dark:border-gray-700 p-4">
+                <div className="flex items-start justify-between gap-3">
+                  <div>
+                    <h4 className="text-sm font-semibold text-gray-900 dark:text-gray-100">{selectedCalendar.name}</h4>
+                    <p className="text-xs text-gray-500 dark:text-gray-400">
+                      {SCOPE_LABELS[selectedCalendar.scopeType]} · {selectedCalendar.country.name}
+                      {selectedCalendar.stateCode ? ` · ${selectedCalendar.stateCode}` : ""}
+                      {selectedCalendar.metroCity?.name ? ` · ${selectedCalendar.metroCity.name}` : ""}
+                    </p>
+                  </div>
+                  <div className="flex gap-2">
+                    <button
+                      data-testid="holiday-calendar-toggle-active-button"
+                      type="button"
+                      onClick={() => updateCalendar.mutate({
+                        id: selectedCalendar.id,
+                        data: { isActive: !selectedCalendar.isActive },
+                      })}
+                      className="rounded-lg border border-gray-300 px-3 py-1.5 text-xs font-medium text-gray-700 hover:bg-gray-50 dark:border-gray-600 dark:text-gray-200 dark:hover:bg-gray-900"
+                    >
+                      {selectedCalendar.isActive ? "Deaktivieren" : "Aktivieren"}
+                    </button>
+                    <button
+                      data-testid="holiday-calendar-delete-button"
+                      type="button"
+                      onClick={() => handleDeleteCalendar(selectedCalendar)}
+                      disabled={deleteCalendar.isPending}
+                      className="rounded-lg border border-red-300 px-3 py-1.5 text-xs font-medium text-red-700 hover:bg-red-50 dark:border-red-700 dark:text-red-300 dark:hover:bg-red-950/30"
+                    >
+                      Loeschen
+                    </button>
+                  </div>
+                </div>
+
+                <form onSubmit={handleUpdateCalendar} className="grid gap-3 md:grid-cols-2 rounded-xl border border-gray-200 dark:border-gray-700 p-4">
+                  <label className="text-sm text-gray-600 dark:text-gray-300">
+                    <span className="mb-1 block text-xs font-medium uppercase tracking-wide text-gray-500 dark:text-gray-400">Kalendername</span>
+                    <input
+                      data-testid="holiday-calendar-draft-name-input"
+                      value={calendarDraft.name}
+                      onChange={(e) => setCalendarDraft((current) => ({ ...current, name: e.target.value }))}
+                      className="w-full rounded-lg border border-gray-300 bg-white px-3 py-2 text-sm dark:border-gray-600 dark:bg-gray-900 dark:text-gray-100"
+                      required
+                    />
+                  </label>
+
+                  <label className="text-sm text-gray-600 dark:text-gray-300">
+                    <span className="mb-1 block text-xs font-medium uppercase tracking-wide text-gray-500 dark:text-gray-400">Prioritaet</span>
+                    <input
+                      data-testid="holiday-calendar-draft-priority-input"
+                      type="number"
+                      value={calendarDraft.priority}
+                      onChange={(e) => setCalendarDraft((current) => ({
+                        ...current,
+                        priority: parseInt(e.target.value, 10) || 0,
+                      }))}
+                      className="w-full rounded-lg border border-gray-300 bg-white px-3 py-2 text-sm dark:border-gray-600 dark:bg-gray-900 dark:text-gray-100"
+                    />
+                  </label>
+
+                  {selectedCalendar.scopeType === "STATE" && (
+                    <label className="text-sm text-gray-600 dark:text-gray-300">
+                      <span className="mb-1 block text-xs font-medium uppercase tracking-wide text-gray-500 dark:text-gray-400">Bundesland/Region Code</span>
+                      <input
+                        data-testid="holiday-calendar-draft-state-input"
+                        value={calendarDraft.stateCode}
+                        onChange={(e) => setCalendarDraft((current) => ({
+                          ...current,
+                          stateCode: e.target.value.toUpperCase(),
+                        }))}
+                        className="w-full rounded-lg border border-gray-300 bg-white px-3 py-2 text-sm dark:border-gray-600 dark:bg-gray-900 dark:text-gray-100"
+                        placeholder="BY"
+                        required
+                      />
+                    </label>
+                  )}
+
+                  {selectedCalendar.scopeType === "CITY" && (
+                    <label className="text-sm text-gray-600 dark:text-gray-300">
+                      <span className="mb-1 block text-xs font-medium uppercase tracking-wide text-gray-500 dark:text-gray-400">Stadt</span>
+                      <select
+                        data-testid="holiday-calendar-draft-city-select"
+                        value={calendarDraft.metroCityId}
+                        onChange={(e) => setCalendarDraft((current) => ({
+                          ...current,
+                          metroCityId: e.target.value,
+                        }))}
+                        className="w-full rounded-lg border border-gray-300 bg-white px-3 py-2 text-sm dark:border-gray-600 dark:bg-gray-900 dark:text-gray-100"
+                        required
+                      >
+                        <option value="">Stadt waehlen</option>
+                        {(selectedCalendarCountry?.metroCities ?? []).map((city) => (
+                          <option key={city.id} value={city.id}>{city.name}</option>
+                        ))}
+                      </select>
+                    </label>
+                  )}
+
+                  <label className="flex items-center gap-2 text-sm text-gray-600 dark:text-gray-300">
+                    <input
+                      type="checkbox"
+                      checked={calendarDraft.isActive}
+                      onChange={(e) => setCalendarDraft((current) => ({
+                        ...current,
+                        isActive: e.target.checked,
+                      }))}
+                      className="rounded border-gray-300 dark:border-gray-600"
+                    />
+                    Kalender aktiv
+                  </label>
+
+                  <div className="flex items-end justify-end gap-2 md:col-span-2">
+                    <button
+                      data-testid="holiday-calendar-reset-button"
+                      type="button"
+                      onClick={resetCalendarDraft}
+                      disabled={!isCalendarDirty || updateCalendar.isPending}
+                      className="rounded-lg border border-gray-300 px-4 py-2 text-sm font-medium text-gray-700 hover:bg-gray-50 disabled:opacity-50 dark:border-gray-600 dark:text-gray-200 dark:hover:bg-gray-900"
+                    >
+                      Zuruecksetzen
+                    </button>
+                    <button
+                      data-testid="holiday-calendar-save-button"
+                      type="submit"
+                      disabled={!isCalendarDirty || updateCalendar.isPending}
+                      className="rounded-lg bg-brand-600 px-4 py-2 text-sm font-medium text-white hover:bg-brand-700 disabled:opacity-50"
+                    >
+                      {updateCalendar.isPending ? "Speichert..." : "Kalender speichern"}
+                    </button>
+                  </div>
+                </form>
+
+                <form onSubmit={handleAddEntry} className="grid gap-3 md:grid-cols-[1fr_1.25fr_1fr_auto]">
+                  <label className="text-sm text-gray-600 dark:text-gray-300">
+                    <span className="mb-1 block text-xs font-medium uppercase tracking-wide text-gray-500 dark:text-gray-400">Datum</span>
+                    <input
+                      data-testid="holiday-entry-date-input"
+                      type="date"
+                      value={entryDate}
+                      onChange={(e) => setEntryDate(e.target.value)}
+                      className="w-full rounded-lg border border-gray-300 bg-white px-3 py-2 text-sm dark:border-gray-600 dark:bg-gray-900 dark:text-gray-100"
+                      required
+                    />
+                  </label>
+                  <label className="text-sm text-gray-600 dark:text-gray-300">
+                    <span className="mb-1 block text-xs font-medium uppercase tracking-wide text-gray-500 dark:text-gray-400">Feiertagsname</span>
+                    <input
+                      data-testid="holiday-entry-name-input"
+                      value={entryName}
+                      onChange={(e) => setEntryName(e.target.value)}
+                      className="w-full rounded-lg border border-gray-300 bg-white px-3 py-2 text-sm dark:border-gray-600 dark:bg-gray-900 dark:text-gray-100"
+                      placeholder="Augsburger Friedensfest"
+                      required
+                    />
+                  </label>
+                  <label className="text-sm text-gray-600 dark:text-gray-300">
+                    <span className="mb-1 block text-xs font-medium uppercase tracking-wide text-gray-500 dark:text-gray-400">Quelle</span>
+                    <input
+                      data-testid="holiday-entry-source-input"
+                      value={entrySource}
+                      onChange={(e) => setEntrySource(e.target.value)}
+                      className="w-full rounded-lg border border-gray-300 bg-white px-3 py-2 text-sm dark:border-gray-600 dark:bg-gray-900 dark:text-gray-100"
+                      placeholder="Kommunale Satzung"
+                    />
+                  </label>
+                  <button
+                    data-testid="holiday-entry-create-button"
+                    type="submit"
+                    disabled={createEntry.isPending || !entryDate || !entryName.trim()}
+                    className="self-end rounded-lg bg-brand-600 px-4 py-2 text-sm font-medium text-white hover:bg-brand-700 disabled:opacity-50"
+                  >
+                    Hinzufuegen
+                  </button>
+                </form>
+
+                <label className="flex items-center gap-2 text-sm text-gray-600 dark:text-gray-300">
+                  <input
+                    data-testid="holiday-entry-recurring-checkbox"
+                    type="checkbox"
+                    checked={entryRecurring}
+                    onChange={(e) => setEntryRecurring(e.target.checked)}
+                    className="rounded border-gray-300 dark:border-gray-600"
+                  />
+                  Jaehrlich wiederkehrend
+                </label>
+
+                <div className="overflow-hidden rounded-xl border border-gray-200 dark:border-gray-700">
+                  <table className="w-full text-sm">
+                    <thead className="bg-gray-50 dark:bg-gray-900/60">
+                      <tr>
+                        <th className="px-3 py-2 text-left text-xs font-medium uppercase tracking-wide text-gray-500">Datum</th>
+                        <th className="px-3 py-2 text-left text-xs font-medium uppercase tracking-wide text-gray-500">Name</th>
+                        <th className="px-3 py-2 text-left text-xs font-medium uppercase tracking-wide text-gray-500">Typ</th>
+                        <th className="px-3 py-2 text-left text-xs font-medium uppercase tracking-wide text-gray-500">Quelle</th>
+                        <th className="px-3 py-2 text-right text-xs font-medium uppercase tracking-wide text-gray-500">Aktion</th>
+                      </tr>
+                    </thead>
+                    <tbody>
+                      {selectedCalendar.entries.length === 0 && (
+                        <tr>
+                          <td colSpan={5} className="px-3 py-6 text-center text-sm text-gray-400">Keine Eintraege vorhanden.</td>
+                        </tr>
+                      )}
+                      {selectedCalendar.entries.map((entry) => (
+                        <tr key={entry.id} className="border-t border-gray-200 dark:border-gray-700">
+                          <td className="px-3 py-2 text-gray-700 dark:text-gray-300">
+                            {editingEntryId === entry.id ? (
+                              <input
+                                data-testid={`holiday-entry-edit-date-${entry.id}`}
+                                type="date"
+                                value={entryDraft.date}
+                                onChange={(e) => setEntryDraft((current) => ({ ...current, date: e.target.value }))}
+                                className="w-full rounded-lg border border-gray-300 bg-white px-2 py-1.5 text-sm dark:border-gray-600 dark:bg-gray-900 dark:text-gray-100"
+                              />
+                            ) : formatDate(entry.date)}
+                          </td>
+                          <td className="px-3 py-2 text-gray-900 dark:text-gray-100">
+                            {editingEntryId === entry.id ? (
+                              <input
+                                data-testid={`holiday-entry-edit-name-${entry.id}`}
+                                value={entryDraft.name}
+                                onChange={(e) => setEntryDraft((current) => ({ ...current, name: e.target.value }))}
+                                className="w-full rounded-lg border border-gray-300 bg-white px-2 py-1.5 text-sm dark:border-gray-600 dark:bg-gray-900 dark:text-gray-100"
+                              />
+                            ) : entry.name}
+                          </td>
+                          <td className="px-3 py-2 text-gray-600 dark:text-gray-400">
+                            {editingEntryId === entry.id ? (
+                              <label className="flex items-center gap-2">
+                                <input
+                                  data-testid={`holiday-entry-edit-recurring-${entry.id}`}
+                                  type="checkbox"
+                                  checked={entryDraft.isRecurringAnnual}
+                                  onChange={(e) => setEntryDraft((current) => ({
+                                    ...current,
+                                    isRecurringAnnual: e.target.checked,
+                                  }))}
+                                  className="rounded border-gray-300 dark:border-gray-600"
+                                />
+                                Jaehrlich
+                              </label>
+                            ) : entry.isRecurringAnnual ? "jaehrlich" : "fix"}
+                          </td>
+                          <td className="px-3 py-2 text-gray-600 dark:text-gray-400">
+                            {editingEntryId === entry.id ? (
+                              <input
+                                data-testid={`holiday-entry-edit-source-${entry.id}`}
+                                value={entryDraft.source}
+                                onChange={(e) => setEntryDraft((current) => ({ ...current, source: e.target.value }))}
+                                className="w-full rounded-lg border border-gray-300 bg-white px-2 py-1.5 text-sm dark:border-gray-600 dark:bg-gray-900 dark:text-gray-100"
+                                placeholder="Quelle"
+                              />
+                            ) : entry.source ?? "System/ohne Quelle"}
+                          </td>
+                          <td className="px-3 py-2 text-right">
+                            <div className="flex justify-end gap-3">
+                              {editingEntryId === entry.id ? (
+                                <>
+                                  <button
+                                    data-testid={`holiday-entry-save-${entry.id}`}
+                                    type="button"
+                                    onClick={() => handleUpdateEntry(entry.id)}
+                                    disabled={updateEntry.isPending || !entryDraft.date || !entryDraft.name.trim()}
+                                    className="text-xs font-medium text-brand-600 hover:text-brand-700 disabled:opacity-50"
+                                  >
+                                    Speichern
+                                  </button>
+                                  <button
+                                    data-testid={`holiday-entry-cancel-${entry.id}`}
+                                    type="button"
+                                    onClick={() => setEditingEntryId(null)}
+                                    disabled={updateEntry.isPending}
+                                    className="text-xs font-medium text-gray-500 hover:text-gray-700 disabled:opacity-50"
+                                  >
+                                    Abbrechen
+                                  </button>
+                                </>
+                              ) : (
+                                <button
+                                  data-testid={`holiday-entry-edit-${entry.id}`}
+                                  type="button"
+                                  onClick={() => startEditingEntry(entry)}
+                                  className="text-xs font-medium text-brand-600 hover:text-brand-700"
+                                >
+                                  Bearbeiten
+                                </button>
+                              )}
+                              <button
+                                data-testid={`holiday-entry-delete-${entry.id}`}
+                                type="button"
+                                onClick={() => handleDeleteEntry(entry)}
+                                disabled={deleteEntry.isPending}
+                                className="text-xs font-medium text-red-600 hover:text-red-700"
+                              >
+                                Entfernen
+                              </button>
+                            </div>
+                          </td>
+                        </tr>
+                      ))}
+                    </tbody>
+                  </table>
+                </div>
+              </div>
+
+              <div className="space-y-3 rounded-xl border border-gray-200 dark:border-gray-700 p-4">
+                <div className="flex items-center justify-between gap-3">
+                  <div>
+                    <h4 className="text-sm font-semibold text-gray-900 dark:text-gray-100">Vorschau</h4>
+                    <p className="text-xs text-gray-500 dark:text-gray-400">Effektiv aufgeloeste Feiertage fuer den gewaehlten Scope.</p>
+                  </div>
+                  <input
+                    data-testid="holiday-preview-year-input"
+                    type="number"
+                    value={previewYear}
+                    onChange={(e) => setPreviewYear(parseInt(e.target.value, 10) || new Date().getFullYear())}
+                    className="w-24 rounded-lg border border-gray-300 bg-white px-3 py-2 text-sm dark:border-gray-600 dark:bg-gray-900 dark:text-gray-100"
+                  />
+                </div>
+
+                <div className="max-h-80 overflow-auto rounded-lg border border-gray-200 dark:border-gray-700">
+                  <table data-testid="holiday-preview-table" className="w-full text-sm">
+                    <thead className="bg-gray-50 dark:bg-gray-900/60">
+                      <tr>
+                        <th className="px-3 py-2 text-left text-xs font-medium uppercase tracking-wide text-gray-500">Datum</th>
+                        <th className="px-3 py-2 text-left text-xs font-medium uppercase tracking-wide text-gray-500">Name</th>
+                        <th className="px-3 py-2 text-left text-xs font-medium uppercase tracking-wide text-gray-500">Quelle</th>
+                      </tr>
+                    </thead>
+                    <tbody>
+                      {(previewQuery.data ?? []).length === 0 && (
+                        <tr>
+                          <td colSpan={3} className="px-3 py-6 text-center text-sm text-gray-400">
+                            {previewQuery.isLoading ? "Laedt Vorschau..." : "Keine Feiertage fuer diese Auswahl vorhanden."}
+                          </td>
+                        </tr>
+                      )}
+                      {(previewQuery.data ?? []).map((entry) => (
+                        <tr key={`${entry.date}-${entry.name}`} className="border-t border-gray-200 dark:border-gray-700">
+                          <td className="px-3 py-2 text-gray-700 dark:text-gray-300">{entry.date}</td>
+                          <td className="px-3 py-2 text-gray-900 dark:text-gray-100">{entry.name}</td>
+                          <td className="px-3 py-2 text-gray-600 dark:text-gray-400">{entry.calendarName}</td>
+                        </tr>
+                      ))}
+                    </tbody>
+                  </table>
+                </div>
+              </div>
+            </div>
+          )}
+        </div>
+      </div>
+    </div>
+  );
+}
diff --git a/apps/web/src/components/vacations/VacationClient.tsx b/apps/web/src/components/vacations/VacationClient.tsx
index 66c3879..c053104 100644
--- a/apps/web/src/components/vacations/VacationClient.tsx
+++ b/apps/web/src/components/vacations/VacationClient.tsx
@@ -1,6 +1,7 @@
 "use client";
 
 import { useState, useCallback } from "react";
+import Link from "next/link";
 import { VacationStatus, VacationType } from "@capakraken/shared";
 import { trpc } from "~/lib/trpc/client.js";
 import { VacationModal } from "./VacationModal.js";
@@ -137,6 +138,13 @@ export function VacationClient() {
         <div>
           <h1 className="text-2xl font-bold text-gray-900 dark:text-gray-100">Vacations</h1>
           <p className="text-sm text-gray-500 dark:text-gray-400 mt-1">Manage vacation requests and approvals</p>
+          <p className="mt-2 text-xs text-gray-500 dark:text-gray-400">
+            Regional public holidays are maintained in{" "}
+            <Link href="/admin/vacations" className="font-medium text-brand-700 hover:text-brand-800 dark:text-brand-400 dark:hover:text-brand-300">
+              Holiday Calendars
+            </Link>
+            .
+          </p>
         </div>
         <button
           type="button"
diff --git a/apps/web/src/components/vacations/VacationModal.tsx b/apps/web/src/components/vacations/VacationModal.tsx
index f4b2d7f..e015b33 100644
--- a/apps/web/src/components/vacations/VacationModal.tsx
+++ b/apps/web/src/components/vacations/VacationModal.tsx
@@ -10,6 +10,34 @@ import { InfoTooltip } from "~/components/ui/InfoTooltip.js";
 import { VACATION_TYPE_LABELS } from "~/lib/status-styles.js";
 
 const VACATION_TYPES = Object.values(VacationType);
+const REQUESTABLE_VACATION_TYPES = VACATION_TYPES.filter((type) => type !== VacationType.PUBLIC_HOLIDAY);
+
+const HOLIDAY_SOURCE_LABELS = {
+  CALENDAR: "Calendar",
+  LEGACY_PUBLIC_HOLIDAY: "Legacy import",
+  CALENDAR_AND_LEGACY: "Calendar + legacy",
+} as const;
+
+type VacationPreviewData = {
+  requestedDays: number;
+  effectiveDays: number;
+  deductedDays: number;
+  publicHolidayDates: string[];
+  holidayDetails: Array<{
+    date: string;
+    source: string;
+  }>;
+  holidayContext: {
+    countryCode: string | null;
+    countryName: string | null;
+    federalState: string | null;
+    metroCityName: string | null;
+    sources: {
+      hasCalendarHolidays: boolean;
+      hasLegacyPublicHolidayEntries: boolean;
+    };
+  };
+};
 
 interface VacationModalProps {
   resourceId?: string;
@@ -17,13 +45,34 @@ interface VacationModalProps {
   onSuccess: () => void;
 }
 
-function toDateInputValue(date: Date | string | null | undefined): string {
-  if (!date) return "";
-  const d = typeof date === "string" ? new Date(date) : date;
-  const y = d.getFullYear();
-  const m = String(d.getMonth() + 1).padStart(2, "0");
-  const day = String(d.getDate()).padStart(2, "0");
-  return `${y}-${m}-${day}`;
+function toUtcInputDate(value: string): Date {
+  return new Date(`${value}T00:00:00.000Z`);
+}
+
+function buildHolidayBasisLabel(preview: VacationPreviewData): string[] {
+  const parts = [];
+
+  if (preview.holidayContext.countryName || preview.holidayContext.countryCode) {
+    parts.push(preview.holidayContext.countryName ?? preview.holidayContext.countryCode ?? "");
+  }
+
+  if (preview.holidayContext.federalState) {
+    parts.push(preview.holidayContext.federalState);
+  }
+
+  if (preview.holidayContext.metroCityName) {
+    parts.push(preview.holidayContext.metroCityName);
+  }
+
+  return parts.filter(Boolean);
+}
+
+function getHolidaySourceLabel(source: string): string {
+  if (source in HOLIDAY_SOURCE_LABELS) {
+    return HOLIDAY_SOURCE_LABELS[source as keyof typeof HOLIDAY_SOURCE_LABELS];
+  }
+
+  return source;
 }
 
 export function VacationModal({ resourceId: initialResourceId, onClose, onSuccess }: VacationModalProps) {
@@ -70,6 +119,24 @@ export function VacationModal({ resourceId: initialResourceId, onClose, onSucces
     { enabled: !!resourceId && !!startDate && !!endDate, staleTime: 10_000 },
   );
 
+  const previewQuery = trpc.vacation.previewRequest.useQuery(
+    {
+      resourceId,
+      type,
+      startDate: toUtcInputDate(debouncedStart || "1970-01-01"),
+      endDate: toUtcInputDate(debouncedEnd || "1970-01-01"),
+      ...(isHalfDay ? { isHalfDay: true } : {}),
+    },
+    {
+      enabled:
+        !!resourceId
+        && !!debouncedStart
+        && !!debouncedEnd
+        && (!isHalfDay || debouncedStart === debouncedEnd),
+      staleTime: 10_000,
+    },
+  );
+
   const utils = trpc.useUtils();
 
   const createMutation = trpc.vacation.create.useMutation({
@@ -166,7 +233,7 @@ export function VacationModal({ resourceId: initialResourceId, onClose, onSucces
           {/* Type */}
           <div>
             <label htmlFor="vac-type" className={labelClass}>
-              Type <span className="text-red-500">*</span><InfoTooltip content="ANNUAL = paid leave (deducted from entitlement) · SICK = sick leave · PUBLIC_HOLIDAY = national/regional holiday · OTHER = special leave." />
+              Type <span className="text-red-500">*</span><InfoTooltip content="ANNUAL = paid leave (deducted from entitlement) · SICK = sick leave · OTHER = special leave. Public holidays come from Holiday Calendars and are excluded automatically." />
             </label>
             <select
               id="vac-type"
@@ -174,7 +241,7 @@ export function VacationModal({ resourceId: initialResourceId, onClose, onSucces
               onChange={(e) => setType(e.target.value as VacationType)}
               className={inputClass}
             >
-              {VACATION_TYPES.map((t) => (
+              {REQUESTABLE_VACATION_TYPES.map((t) => (
                 <option key={t} value={t}>
                   {VACATION_TYPE_LABELS[t]}
                 </option>
@@ -282,6 +349,81 @@ export function VacationModal({ resourceId: initialResourceId, onClose, onSucces
             </div>
           )}
 
+          {!!resourceId && !!startDate && !!endDate && (
+            <div
+              data-testid="vacation-preview-card"
+              className="rounded-lg border border-emerald-200 bg-emerald-50 px-4 py-3 text-sm text-emerald-900"
+            >
+              <div className="flex items-center justify-between gap-3">
+                <strong>Leave preview</strong>
+                {previewQuery.isLoading && (
+                  <span className="text-xs text-emerald-700">Calculating…</span>
+                )}
+              </div>
+
+              {previewQuery.data && (
+                <div className="mt-2 space-y-2">
+                  <div className="grid grid-cols-3 gap-2 text-xs sm:text-sm">
+                    <div className="rounded-md bg-white/70 px-3 py-2">
+                      <div className="text-emerald-700">Requested</div>
+                      <div data-testid="vacation-preview-requested-days" className="font-semibold">
+                        {previewQuery.data.requestedDays}
+                      </div>
+                    </div>
+                    <div className="rounded-md bg-white/70 px-3 py-2">
+                      <div className="text-emerald-700">Effective</div>
+                      <div data-testid="vacation-preview-effective-days" className="font-semibold">
+                        {previewQuery.data.effectiveDays}
+                      </div>
+                    </div>
+                    <div className="rounded-md bg-white/70 px-3 py-2">
+                      <div className="text-emerald-700">Deducted</div>
+                      <div data-testid="vacation-preview-deducted-days" className="font-semibold">
+                        {previewQuery.data.deductedDays}
+                      </div>
+                    </div>
+                  </div>
+
+                  {buildHolidayBasisLabel(previewQuery.data).length > 0 && (
+                    <div data-testid="vacation-preview-holiday-basis" className="rounded-md bg-white/70 px-3 py-2 text-xs sm:text-sm">
+                      <span className="font-medium">Holiday basis:</span>{" "}
+                      {buildHolidayBasisLabel(previewQuery.data).join(" / ")}
+                    </div>
+                  )}
+
+                  {(previewQuery.data.holidayContext.sources.hasCalendarHolidays || previewQuery.data.holidayContext.sources.hasLegacyPublicHolidayEntries) && (
+                    <div data-testid="vacation-preview-holiday-sources" className="rounded-md bg-white/70 px-3 py-2 text-xs sm:text-sm">
+                      <span className="font-medium">Sources:</span>{" "}
+                      {[
+                        previewQuery.data.holidayContext.sources.hasCalendarHolidays ? "Holiday Calendar" : null,
+                        previewQuery.data.holidayContext.sources.hasLegacyPublicHolidayEntries ? "Legacy public holiday entries" : null,
+                      ].filter(Boolean).join(" + ")}
+                    </div>
+                  )}
+
+                  {previewQuery.data.publicHolidayDates.length > 0 && (
+                    <div data-testid="vacation-preview-public-holidays" className="text-xs sm:text-sm">
+                      <span className="font-medium">Excluded public holidays:</span>{" "}
+                      {previewQuery.data.holidayDetails.map((holiday) => `${holiday.date} (${getHolidaySourceLabel(holiday.source)})`).join(", ")}
+                    </div>
+                  )}
+
+                  {previewQuery.data.requestedDays !== previewQuery.data.deductedDays && (
+                    <div className="text-xs sm:text-sm text-emerald-800">
+                      Public holidays in the selected range are excluded from deducted leave days.
+                    </div>
+                  )}
+                </div>
+              )}
+
+              {previewQuery.error && (
+                <div className="mt-2 text-xs text-red-700">
+                  {previewQuery.error.message}
+                </div>
+              )}
+            </div>
+          )}
+
           {/* Note */}
           <div>
             <label htmlFor="vac-note" className={labelClass}>
diff --git a/apps/web/src/hooks/useAnchoredOverlay.ts b/apps/web/src/hooks/useAnchoredOverlay.ts
new file mode 100644
index 0000000..a1db5c9
--- /dev/null
+++ b/apps/web/src/hooks/useAnchoredOverlay.ts
@@ -0,0 +1,155 @@
+import { useCallback, useEffect, useRef, useState, type RefObject } from "react";
+
+type HorizontalAlign = "start" | "end" | "center";
+type VerticalAlign = "start" | "end" | "center";
+type OverlaySide = "bottom" | "right";
+
+interface UseAnchoredOverlayOptions<TTrigger extends HTMLElement> {
+  open: boolean;
+  onClose: () => void;
+  offset?: number;
+  viewportPadding?: number;
+  side?: OverlaySide;
+  align?: HorizontalAlign;
+  crossAlign?: VerticalAlign;
+  matchTriggerWidth?: boolean;
+  triggerRef?: RefObject<TTrigger | null>;
+}
+
+interface OverlayPosition {
+  top: number;
+  left: number;
+  minWidth?: number;
+}
+
+export function useAnchoredOverlay<TTrigger extends HTMLElement = HTMLElement>({
+  open,
+  onClose,
+  offset = 8,
+  viewportPadding = 16,
+  side = "bottom",
+  align = "start",
+  crossAlign = "start",
+  matchTriggerWidth = false,
+  triggerRef: externalTriggerRef,
+}: UseAnchoredOverlayOptions<TTrigger>) {
+  const internalTriggerRef = useRef<TTrigger | null>(null);
+  const triggerRef = externalTriggerRef ?? internalTriggerRef;
+  const panelRef = useRef<HTMLDivElement | null>(null);
+  const [position, setPosition] = useState<OverlayPosition>({ top: 0, left: 0 });
+
+  const updatePosition = useCallback(() => {
+    const trigger = triggerRef.current;
+    if (!trigger) {
+      return;
+    }
+
+    const rect = trigger.getBoundingClientRect();
+    const panelWidth = panelRef.current?.offsetWidth ?? rect.width;
+    const panelHeight = panelRef.current?.offsetHeight ?? 0;
+
+    let nextTop = rect.bottom + offset;
+    let nextLeft = rect.left;
+
+    if (side === "right") {
+      nextLeft = rect.right + offset;
+      if (crossAlign === "center") {
+        nextTop = rect.top + rect.height / 2 - panelHeight / 2;
+      } else if (crossAlign === "end") {
+        nextTop = rect.bottom - panelHeight;
+      } else {
+        nextTop = rect.top;
+      }
+    } else {
+      if (align === "end") {
+        nextLeft = rect.right - panelWidth;
+      } else if (align === "center") {
+        nextLeft = rect.left + rect.width / 2 - panelWidth / 2;
+      }
+
+      nextTop = rect.bottom + offset;
+      const nextBottom = nextTop + panelHeight;
+      const flippedTop = rect.top - panelHeight - offset;
+      if (panelHeight > 0 && nextBottom > window.innerHeight - viewportPadding && flippedTop >= viewportPadding) {
+        nextTop = flippedTop;
+      }
+    }
+
+    const boundedLeft = Math.min(
+      Math.max(nextLeft, viewportPadding),
+      Math.max(viewportPadding, window.innerWidth - panelWidth - viewportPadding),
+    );
+    const boundedTop = Math.min(
+      Math.max(nextTop, viewportPadding),
+      Math.max(viewportPadding, window.innerHeight - panelHeight - viewportPadding),
+    );
+
+    setPosition({
+      top: boundedTop,
+      left: boundedLeft,
+      ...(matchTriggerWidth ? { minWidth: rect.width } : {}),
+    });
+  }, [align, crossAlign, matchTriggerWidth, offset, side, triggerRef, viewportPadding]);
+
+  useEffect(() => {
+    if (!open) {
+      return;
+    }
+
+    function handlePointerDown(event: MouseEvent) {
+      const target = event.target as Node;
+      if (triggerRef.current?.contains(target) || panelRef.current?.contains(target)) {
+        return;
+      }
+      onClose();
+    }
+
+    function handleEscape(event: KeyboardEvent) {
+      if (event.key === "Escape") {
+        onClose();
+      }
+    }
+
+    document.addEventListener("mousedown", handlePointerDown);
+    window.addEventListener("keydown", handleEscape);
+
+    return () => {
+      document.removeEventListener("mousedown", handlePointerDown);
+      window.removeEventListener("keydown", handleEscape);
+    };
+  }, [onClose, open]);
+
+  useEffect(() => {
+    if (!open) {
+      return;
+    }
+
+    updatePosition();
+    const rafId = window.requestAnimationFrame(updatePosition);
+
+    window.addEventListener("resize", updatePosition);
+    window.addEventListener("scroll", updatePosition, true);
+
+    return () => {
+      window.cancelAnimationFrame(rafId);
+      window.removeEventListener("resize", updatePosition);
+      window.removeEventListener("scroll", updatePosition, true);
+    };
+  }, [open, updatePosition]);
+
+  const handleOpenChange = useCallback((nextOpen: boolean) => {
+    if (nextOpen) {
+      updatePosition();
+      return;
+    }
+    onClose();
+  }, [onClose, updatePosition]);
+
+  return {
+    triggerRef,
+    panelRef,
+    position,
+    updatePosition,
+    handleOpenChange,
+  };
+}
diff --git a/apps/web/src/hooks/useViewportPopover.ts b/apps/web/src/hooks/useViewportPopover.ts
new file mode 100644
index 0000000..49e5b6b
--- /dev/null
+++ b/apps/web/src/hooks/useViewportPopover.ts
@@ -0,0 +1,110 @@
+import { useEffect, useMemo, useRef, type CSSProperties } from "react";
+
+type PopoverAnchor =
+  | { kind: "point"; x: number; y: number }
+  | { kind: "element"; element: HTMLElement };
+
+type PopoverSide = "bottom" | "right";
+type PopoverAlign = "start" | "end" | "center";
+
+interface UseViewportPopoverOptions {
+  anchor: PopoverAnchor;
+  width: number;
+  estimatedHeight: number;
+  onClose: () => void;
+  side?: PopoverSide;
+  align?: PopoverAlign;
+  offset?: number;
+  viewportPadding?: number;
+  ignoreElements?: Array<HTMLElement | null>;
+}
+
+export function useViewportPopover({
+  anchor,
+  width,
+  estimatedHeight,
+  onClose,
+  side = "bottom",
+  align = "start",
+  offset = 8,
+  viewportPadding = 16,
+  ignoreElements = [],
+}: UseViewportPopoverOptions) {
+  const ref = useRef<HTMLDivElement>(null);
+
+  useEffect(() => {
+    function handlePointerDown(event: MouseEvent) {
+      const target = event.target as Node;
+      if (ref.current?.contains(target)) {
+        return;
+      }
+      if (ignoreElements.some((element) => element?.contains(target))) {
+        return;
+      }
+      onClose();
+    }
+
+    function handleEscape(event: KeyboardEvent) {
+      if (event.key === "Escape") {
+        onClose();
+      }
+    }
+
+    document.addEventListener("mousedown", handlePointerDown);
+    window.addEventListener("keydown", handleEscape);
+
+    return () => {
+      document.removeEventListener("mousedown", handlePointerDown);
+      window.removeEventListener("keydown", handleEscape);
+    };
+  }, [ignoreElements, onClose]);
+
+  const style = useMemo<CSSProperties>(() => {
+    let left = 0;
+    let top = 0;
+
+    if (anchor.kind === "element") {
+      const rect = anchor.element.getBoundingClientRect();
+      if (side === "right") {
+        left = rect.right + offset;
+        if (align === "end") {
+          top = rect.bottom - estimatedHeight;
+        } else if (align === "center") {
+          top = rect.top + rect.height / 2 - estimatedHeight / 2;
+        } else {
+          top = rect.top;
+        }
+      } else {
+        left = rect.left;
+        if (align === "end") {
+          left = rect.right - width;
+        } else if (align === "center") {
+          left = rect.left + rect.width / 2 - width / 2;
+        }
+        top = rect.bottom + offset;
+      }
+    } else {
+      left = anchor.x;
+      top = anchor.y + offset;
+
+      if (align === "end") {
+        left = anchor.x - width;
+      } else if (align === "center") {
+        left = anchor.x - width / 2;
+      }
+    }
+
+    const maxLeft = Math.max(viewportPadding, window.innerWidth - width - viewportPadding);
+    const maxTop = Math.max(viewportPadding, window.innerHeight - estimatedHeight - viewportPadding);
+
+    return {
+      position: "fixed",
+      left: Math.min(Math.max(left, viewportPadding), maxLeft),
+      top: Math.min(Math.max(top, viewportPadding), maxTop),
+      width,
+      zIndex: 60,
+    };
+  }, [align, anchor, estimatedHeight, offset, side, viewportPadding, width]);
+
+  return { ref, style };
+}
diff --git a/apps/web/src/server/auth.ts b/apps/web/src/server/auth.ts
index e51a636..a7a8b41 100644
--- a/apps/web/src/server/auth.ts
+++ b/apps/web/src/server/auth.ts
@@ -1,6 +1,6 @@
 import { prisma } from "@capakraken/db";
 import { authRateLimiter } from "@capakraken/api/middleware/rate-limit";
-import { createAuditEntry } from "@capakraken/api";
+import { createAuditEntry } from "@capakraken/api/lib/audit";
 import { logger } from "@capakraken/api/lib/logger";
 import NextAuth, { type NextAuthConfig } from "next-auth";
 import Credentials from "next-auth/providers/credentials";
@@ -27,9 +27,12 @@ const authConfig = {
         if (!parsed.success) return null;
 
         const { email, password, totp } = parsed.data;
+        const isE2eTestMode = process.env["E2E_TEST_MODE"] === "true";
 
         // Rate limit: 5 login attempts per 15 minutes per email
-        const rateLimitResult = authRateLimiter(email.toLowerCase());
+        const rateLimitResult = isE2eTestMode
+          ? { allowed: true }
+          : authRateLimiter(email.toLowerCase());
         if (!rateLimitResult.allowed) {
           // Audit failed login (rate limited)
           void createAuditEntry({
diff --git a/apps/web/tsconfig.json b/apps/web/tsconfig.json
index cc87008..eae1cbe 100644
--- a/apps/web/tsconfig.json
+++ b/apps/web/tsconfig.json
@@ -16,10 +16,11 @@
     "isolatedModules": true
   },
   "include": [
-    "next-env.d.ts",
     "**/*.ts",
     "**/*.tsx",
-    ".next/types/**/*.ts"
+    ".next/types/**/*.ts",
+    "next-env.d.ts",
+    ".next-e2e/types/**/*.ts"
   ],
   "exclude": [
     "node_modules"
diff --git a/docker-compose.prod.yml b/docker-compose.prod.yml
index 9207698..a17ee4d 100644
--- a/docker-compose.prod.yml
+++ b/docker-compose.prod.yml
@@ -1,3 +1,5 @@
+name: capakraken-prod
+
 services:
   postgres:
     image: postgres:16-alpine
@@ -66,4 +68,6 @@ services:
 
 volumes:
   capakraken_prod_pgdata:
+    name: capakraken_prod_pgdata
   capakraken_prod_redis:
+    name: capakraken_prod_redis
diff --git a/docker-compose.yml b/docker-compose.yml
index a4af6bf..7947e02 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,3 +1,5 @@
+name: capakraken
+
 services:
   postgres:
     image: postgres:16-alpine
@@ -69,7 +71,7 @@ services:
   postgres-test:
     image: postgres:16-alpine
     ports:
-      - "5434:5432"
+      - "${POSTGRES_TEST_PORT:-5434}:5432"
     environment:
       POSTGRES_DB: capakraken_test
       POSTGRES_USER: capakraken
@@ -81,3 +83,4 @@ services:
 
 volumes:
   capakraken_pgdata:
+    name: capakraken_pgdata
diff --git a/docs/assistant-capability-gap-analysis.md b/docs/assistant-capability-gap-analysis.md
new file mode 100644
index 0000000..f517de6
--- /dev/null
+++ b/docs/assistant-capability-gap-analysis.md
@@ -0,0 +1,492 @@
+# Assistant Capability Gap Analysis
+
+## Zielbild
+
+Der AI Assistant soll grundsaetzlich alles lesen und ausfuehren koennen, was ein eingeloggter Nutzer gemaess seiner Rolle, Permission-Overrides und Objekt-Sichtbarkeit auch kann. Er darf weder weniger fachlich relevante Informationen sehen als die UI noch mehr Rechte erhalten als der Nutzer selbst.
+
+## Ist-Zustand
+
+Der Assistant ist bereits relativ breit aufgestellt:
+
+- Er haengt an `packages/api/src/router/assistant.ts`.
+- Er exponiert aktuell 88 Function-Calling-Tools aus `packages/api/src/router/assistant-tools.ts`.
+- Er deckt viele Kernbereiche bereits ab: Ressourcen, Projekte, Allokationen, Urlaub, Feiertagsabfragen, Staffing, Demand, Dashboard, einfache Insights, Kommentare, Notifications, Tasks, Reporting, Szenario-Simulation und Navigation.
+
+Trotzdem ist die Paritaet zur eigentlichen App/API noch nicht erreicht. Die groessten Luecken liegen nicht bei "gar nichts vorhanden", sondern bei:
+
+- fehlenden Admin- und Konfigurationsfaehigkeiten,
+- fehlenden tiefen Fach-Readmodels,
+- inkonsistentem Permission-Gating,
+- fehlender serverseitiger Absicherung fuer schreibende AI-Aktionen,
+- und einigen objektbezogenen Sichtbarkeitsfehlern.
+
+## Architektur des Assistants
+
+### Routing und Tool-Aufruf
+
+- `assistant.chat` baut den System Prompt, filtert die verfuegbaren Tools und laesst das Modell Tools aufrufen.
+- Der eigentliche Datenzugriff liegt fast komplett in `executeTool(...)` und den `executors` in `packages/api/src/router/assistant-tools.ts`.
+
+### Permission-Gating
+
+Es gibt aktuell vier Permission-/Scope-Ebenen:
+
+1. Tool-Sichtbarkeit vor dem Modellaufruf in `assistant.ts`
+- `TOOL_PERMISSION_MAP` blendet bestimmte Schreib-Tools aus.
+- `COST_TOOLS` blendet kostenrelevante Tools ohne `viewCosts` aus.
+
+2. Laufzeit-Guards in einzelnen Tool-Executors
+- Viele Mutationen nutzen `assertPermission(...)`.
+
+3. Objekt-/Ownership-Checks in einzelnen Tools
+- Beispiel: `update_task_status` und `execute_task_action` pruefen, ob das Task dem Nutzer gehoert.
+
+4. Normale DB-/TRPC-Semantik der zugrunde liegenden Queries
+- Diese ist aber im Assistant nicht automatisch identisch mit den eigentlichen Routern, weil die Assistant-Tools oft eigene DB-Queries verwenden.
+
+## Assistant Capability Matrix
+
+### Bereits gut abgedeckt
+
+- Ressourcen lesen und teilweise verwalten
+- Projekte lesen und teilweise verwalten
+- Allokationen lesen sowie erstellen/stornieren/status aendern
+- Vacation-Grundfaelle: erstellen, genehmigen, ablehnen, stornieren, Balance, Overlap, Pending Approvals
+- Feiertage aufgeloest nach Region oder Ressource lesen
+- Staffing/Demand-Grundfaelle
+- Dashboard-Detailabfragen auf grober Ebene
+- Basis-Insights
+- Kommentare lesen/anlegen/resolve
+- Notifications und Tasks in Grundzuegen
+- Szenario-Simulation read-only
+- Navigation in die UI
+
+### Teilweise abgedeckt
+
+- Timeline: nur indirekt ueber Navigation und Allokations-Basisabfragen
+- Estimates: nur Suche, Detail und Anlegen, aber kein voller Lifecycle
+- Reports: `run_report` ist flexibel, deckt aber nicht die spezialisierten Report-/Analyse-Readmodels ab
+- Audit/History: nur einfache History-Abfragen, keine volle Audit-API
+- Notification/Tasking: Kernfaelle vorhanden, aber keine volle Reminder-/Task-/Notification-Paritaet
+- Country-/Location-Stammdaten: nur lesend und auch dort nur flach
+- Insights: Summary-Ebene vorhanden, Drilldowns fehlen
+
+### Vollstaendig fehlend oder fachlich nicht ausreichend
+
+- Holiday-Calendar-Admin und Editor-Funktionen
+- Computation Graph fuer vollstaendige Herleitungen
+- Chargeability Report Readmodel
+- Webhook-Administration
+- System Settings / AI / SMTP / Image-Provider Administration
+- System Role Config Administration
+- Import/Export-Flows
+- User Self-Service und Preferences
+- Country- und Metro-City-Administration
+- Volle Timeline-Readmodels und Timeline-Mutationen
+- Voller Estimate-Lifecycle
+- Dispo-/Import-spezifische Flows
+
+## Kritische Inkonsistenzen und Risiken
+
+### P0: Human-in-the-Loop nur im Prompt, nicht serverseitig erzwungen
+
+Der System Prompt fordert bestaetigte Freigabe vor jeder schreibenden Aktion. Technisch wird das aber nicht serverseitig erzwungen. Wenn das Modell direkt ein Mutation-Tool aufruft, wird es ausgefuehrt.
+
+Betroffene Stellen:
+
+- `packages/api/src/router/assistant.ts`
+- `packages/api/src/router/assistant-tools.ts`
+
+Konsequenz:
+
+- Die wichtigste Governance-Regel ist aktuell nur Prompt-Disziplin, keine technische Policy.
+
+### P0: Notification-Scoping im Assistant ist fachlich/sicherheitsseitig falsch
+
+Die dedizierte `notificationRouter` scoped strikt auf den aktuellen Nutzer. Die Assistant-Tools tun das in `list_notifications` und `mark_notification_read` nicht.
+
+Assistant-Verhalten:
+
+- `list_notifications` listet Notifications ohne `userId`-Filter.
+- `mark_notification_read` markiert per ID ohne Ownership-Check.
+
+Konsequenz:
+
+- Der Assistant kann Informationen sehen oder veraendern, die der Nutzer in der normalen Notification-UI nicht sehen duerfte.
+
+### P0: `list_users` ist als admin-only beschrieben, aber nicht effektiv admin-only
+
+Der Tool-Text sagt "Requires admin permission", aber es gibt weder einen Eintrag in `TOOL_PERMISSION_MAP` noch einen `assertPermission(...)` im Executor.
+
+Konsequenz:
+
+- Jeder Nutzer mit Assistant-Zugriff kann potenziell die User-Liste lesen, obwohl die normale App dies ueber `userRouter.list` nur Admins gibt.
+
+### P1: Permission-Beschreibungen und technische Guards sind nicht konsistent
+
+Beispiele:
+
+- `create_estimate`
+  - Beschreibung: "Requires manageEstimates permission"
+  - Technik: `TOOL_PERMISSION_MAP` und Executor verlangen `manageProjects`
+
+- `create_org_unit` / `update_org_unit`
+  - Beschreibung: "Requires admin permission"
+  - Technik: `manageResources`
+
+- `send_broadcast`
+  - Beschreibung: "Requires manager permission"
+  - Technik: `manageProjects`
+
+Konsequenz:
+
+- Der Assistant ist fuer Nutzer und fuer uns selbst schwer vorhersehbar.
+- Ein sauberer Rechteabgleich "User kann X in UI, also Assistant auch" ist dadurch nicht belastbar.
+
+### P1: Nicht alle Assistant-Mutationen sind als Mutation-Typ sauber nachverfolgbar
+
+`MUTATION_TOOLS` dient dem Logging von AI-Mutationen. Nicht jede schreibende Aktion ist dort gleich gut abgebildet.
+
+Beispiel:
+
+- `mark_notification_read` aendert Daten, ist aber nicht in `MUTATION_TOOLS`.
+
+Konsequenz:
+
+- Luecken im AI-spezifischen Audit-Trail.
+
+## Was der Assistant heute noch nicht "weiss"
+
+Die folgende Liste meint: Informationen, die in App/API bereits existieren oder fuer Nutzer sichtbar sind, aber im Assistant heute gar nicht oder nicht in gleichwertiger Tiefe/Struktur verfuegbar sind.
+
+### Feiertage und Kalender
+
+- Vollstaendige Holiday-Calendar-Stammdaten:
+  - Kalender-Liste mit Scope, Prioritaet, Aktiv-Status, Entry-Count
+  - einzelne Kalender inklusive aller Entries
+  - Preview der aufgeloesten Feiertage fuer geplante Kalenderaenderungen
+- Editierkontext des Holiday-Editors:
+  - was global, state-spezifisch oder city-spezifisch konfiguriert ist
+  - welche Kalender sich gegenseitig ueberschreiben oder ergaenzen
+
+Aktuell im Assistant vorhanden:
+
+- aufgeloeste Feiertage nach Region oder Ressource
+
+Fehlend:
+
+- die eigentlichen Kalenderobjekte und deren Pflegekontext
+
+### Timeline und Disposition
+
+- Vollstaendiges Timeline-Readmodel:
+  - `getEntriesView`
+  - Projekt-/Demand-/Assignment-Kontext in derselben Struktur wie die UI
+  - Holiday-Overlays der Timeline
+  - Projektkontext fuer Drag/Shift/Panel-Interaktionen
+- Timeline-spezifische Vorschau-/Validierungsdaten:
+  - `previewShift`
+  - genaue Konflikte, Kosten-Delta, Auswirkungen vor Commit
+- Batch- und Inline-Operationen der Timeline:
+  - `updateAllocationInline`
+  - `quickAssign`
+  - `batchQuickAssign`
+  - `batchShiftAllocations`
+  - `applyShift`
+- Dispo-spezifische Import-/Workbook-Flows
+
+Konsequenz:
+
+- Der Assistant kann heute nicht denselben Timeline-Arbeitsmodus wie ein Nutzer in der UI abbilden.
+
+### Transparenz, Herleitungen und Berechnungsgraphen
+
+- Vollstaendige Computation-Graph-Daten fuer Resource- und Project-Views:
+  - Herleitungsfaktoren
+  - Formeln
+  - Holiday-/State-/City-Kontext pro Berechnung
+  - Node/Link-Zusammenhaenge
+- Spezialisierter Chargeability Report:
+  - Monatsreihen
+  - Org-Unit-, Management-Level- und Country-Filter
+  - Gruppenaggregate und Luecken zum Target
+
+Konsequenz:
+
+- Der Assistant kann zwar Teilantworten zu Chargeability/Budget geben, aber noch nicht dieselbe Erklaerungstiefe wie die spezialisierten Analyseansichten.
+
+### Audit, Verlauf und Governance
+
+- Vollstaendige Audit-API:
+  - paginierte Listen
+  - Detailansicht mit voller `changes`-Struktur
+  - Timeline-View
+  - Activity Summary
+
+Aktuell im Assistant vorhanden:
+
+- vereinfachte History-Suche (`query_change_history`)
+- Entity-History (`get_entity_timeline`)
+
+Fehlend:
+
+- die vollstaendige Governance-/Revisionstiefe der Audit-Oberflaeche
+
+### Admin- und Systemkonfiguration
+
+- System Settings:
+  - AI-Provider-Konfiguration
+  - SMTP-Konfiguration
+  - Image-Provider-Konfiguration
+  - Score Weights / Sichtbarkeiten
+  - Vacation Defaults
+  - Timeline Undo Settings
+  - Connection Tests
+- System Role Config:
+  - Rollenlabels
+  - Beschreibungen
+  - Farben
+  - Default-Permissions
+- Webhooks:
+  - Liste, Detail, Create, Update, Delete, Test
+
+Konsequenz:
+
+- Ein Admin kann in der UI deutlich mehr Systemsteuerung als der Assistant.
+
+### User Self-Service
+
+- `user.me`
+- Dashboard-Layout lesen/speichern
+- Favorite Projects lesen/toggeln
+- Column Preferences lesen/speichern
+- MFA / TOTP aktivieren, pruefen, Status lesen
+- einige Nutzerverwaltungsaktionen aus `userRouter`
+
+Konsequenz:
+
+- Der Assistant kennt den Nutzerkontext nur oberflaechlich, aber nicht dessen persoenliche Einstellungen und Self-Service-Moeglichkeiten.
+
+### Stammdaten fuer Laender und Orte
+
+- Country-Details inklusive `scheduleRules`
+- Metro-City-Verwaltung
+- Country-/City-CRUD
+
+Aktuell im Assistant vorhanden:
+
+- `list_countries` mit relativ flachem Output
+
+Fehlend:
+
+- volle fachliche Pflege und die tieferen Standortregeln, die fuer Feiertage, SAH und Forecasts relevant sind
+
+### Estimate-Lifecycle und Fachobjekte unterhalb des Estimates
+
+- volle Estimate-Listen-/Detail-Paritaet
+- Versionen, Scope Items, Demand Lines, Locking, Freigaben, weiterfuehrende Mutationen
+
+Aktuell im Assistant vorhanden:
+
+- Suche
+- Baseline-Detail
+- Anlegen
+
+Fehlend:
+
+- der eigentliche Arbeitsprozess auf Estimate-Ebene
+
+### Notifications, Tasks und Reminder
+
+Vorhanden:
+
+- Listen, Task-Detail, Statuswechsel, Reminder anlegen, Task fuer User anlegen, Broadcast senden
+
+Fehlend:
+
+- Reminder-Liste
+- Reminder-Update/Delete
+- Unread Count
+- Task Counts
+- generische Notification-Erstellung mit derselben Tiefe wie `notificationRouter`
+
+## Capability Gaps nach Router
+
+### Komplett fehlende Router-Paritaet
+
+- `holidayCalendar`
+- `importExport`
+- `chargeabilityReport`
+- `computationGraph`
+- `settings`
+- `systemRoleConfig`
+- `webhook`
+- `dispo`
+
+### Deutlich unvollstaendige Router-Paritaet
+
+- `timeline`
+- `vacation`
+- `estimate`
+- `notification`
+- `user`
+- `country`
+- `auditLog`
+- `insights`
+- `scenario`
+- `resource`
+- `project`
+- `comment`
+
+### Nahe an brauchbarer Grundabdeckung, aber nicht vollstaendig
+
+- `resource`
+- `project`
+- `staffing`
+- `report`
+- `dashboard`
+
+## System Prompt: offensichtliche Uebertreibungen / Irrefuehrungen
+
+Der Prompt suggeriert an mehreren Stellen mehr Paritaet, als technisch heute vorhanden ist.
+
+### Problematische Aussagen
+
+- "Urlaub, Feiertage" ist fuer Leseabfragen ok, aber nicht fuer Holiday-Calendar-Administration.
+- "Notifications anzeigen" stimmt nur eingeschraenkt, weil das Assistant-Tooling aktuell nicht sauber auf den aktuellen Nutzer scoped.
+- "Dashboard-Details abrufen" stimmt nur fuer einen Teil der Dashboard-/Analysewelt.
+- "Den User zu relevanten Seiten navigieren" stimmt, ersetzt aber keine echte Daten-/Aktionsparitaet in Timeline, Holiday Editor oder Admin-Bereichen.
+- "Ressourcenplanung und Projektmanagement" klingt umfassender, als die reale Tool-Abdeckung in spezialisierten Subsystemen ist.
+
+### Wichtigste Prompt-Luecke
+
+Die Human-in-the-Loop-Regel wird als harte Pflicht formuliert, ist technisch aber nicht hart erzwungen.
+
+## Was getan werden muss, damit der Assistant wirklich dieselben Nutzerfaehigkeiten hat
+
+### P0: Sicherheits- und Governance-Hardening
+
+1. Serverseitige Confirm-Policy fuer alle schreibenden Assistant-Tools einziehen.
+- Schreibende Tool-Calls duerfen ohne bestaetigten Confirmation-Token nicht ausgefuehrt werden.
+- Diese Policy darf nicht nur im Prompt stehen.
+
+2. Assistant-Tools auf denselben Objekt-Scope wie die eigentlichen Router bringen.
+- Besonders:
+  - Notifications
+  - Tasks
+  - User-Liste
+  - alle personenbezogenen oder sensitiven Admin-Daten
+
+3. Permission-Quellen vereinheitlichen.
+- Ein zentraler Capability-/Policy-Registry sollte festlegen:
+  - welches Tool welche Permission braucht,
+  - ob Objekt-Ownership gilt,
+  - ob `viewCosts` zusaetzlich erforderlich ist,
+  - ob Human Confirmation erforderlich ist.
+
+### P1: Fachliche Paritaet fuer die wichtigsten Nutzer-Workflows
+
+1. Holiday-Calendar-Assistant-Strang bauen
+- `list_holiday_calendars`
+- `get_holiday_calendar`
+- `create_holiday_calendar`
+- `update_holiday_calendar`
+- `delete_holiday_calendar`
+- `create_holiday_entry`
+- `update_holiday_entry`
+- `delete_holiday_entry`
+- `preview_resolved_holidays`
+
+2. Timeline-Assistant-Strang bauen
+- Read:
+  - `get_timeline_entries_view`
+  - `get_timeline_holiday_overlays`
+  - `get_timeline_project_context`
+  - `preview_project_shift`
+- Write:
+  - `update_allocation_inline`
+  - `apply_project_shift`
+  - `quick_assign`
+  - `batch_quick_assign`
+  - `batch_shift_allocations`
+
+3. Analyse-/Transparenz-Paritaet bauen
+- `get_chargeability_report`
+- `get_resource_computation_graph`
+- `get_project_computation_graph`
+
+### P2: Admin- und Stammdaten-Paritaet
+
+1. Settings-Admin-Tools
+- lesen
+- aktualisieren
+- Connection Tests
+
+2. SystemRoleConfig-Tools
+- listen
+- update
+
+3. Country-/City-Tools
+- Country-Detail
+- Country-Create/Update
+- City-Create/Update/Delete
+
+4. Webhook-Tools
+- list/get/create/update/delete/test
+
+### P3: Self-Service- und Workflow-Paritaet
+
+1. User-Tools
+- `get_me`
+- Dashboard-Layout lesen/schreiben
+- Favoriten lesen/toggeln
+- Column Preferences lesen/schreiben
+- MFA-Status / TOTP-Flows
+
+2. Notification-/Reminder-Paritaet
+- Reminder listen/update/delete
+- unreadCount
+- taskCounts
+
+3. Estimate-Lifecycle vertiefen
+- Versionen
+- Scope Items
+- Demand Lines
+- Status-/Locking-/Approval-Flows
+
+## Empfohlene Umsetzungsreihenfolge
+
+### Stream A: Safety / Policy
+
+- serverseitige Confirmation-Gates
+- Ownership-/Permission-Fixes
+- Mutation-Audit vervollstaendigen
+
+### Stream B: Holiday + Timeline Parity
+
+- Holiday-Calendar-Editor-Tools
+- Timeline-Readmodels
+- Timeline-Shift-/Assign-Aktionen
+
+### Stream C: Explainability / Analytics
+
+- Chargeability Report
+- Computation Graph
+- Audit Summary
+
+### Stream D: Admin / Ops
+
+- Settings
+- System Role Config
+- Webhooks
+- Import/Export
+
+## Kurzfazit
+
+Der Assistant ist bereits breit genug, um viele operative Fragen und Standardaktionen abzudecken. Er ist aber noch nicht in dem Zustand, dass man sagen kann: "Alles, was der Nutzer kann, kann auch der Assistant."
+
+Die drei groessten Blocker dafuer sind:
+
+1. fehlende serverseitige Absicherung fuer schreibende AI-Aktionen,
+2. unvollstaendige fachliche Paritaet in Holiday/Timeline/Analytics/Admin-Bereichen,
+3. inkonsistente oder zu schwache Permission- und Ownership-Pruefungen in einzelnen Tools.
diff --git a/docs/holiday-calendar-implementation-plan.md b/docs/holiday-calendar-implementation-plan.md
new file mode 100644
index 0000000..87b6aa7
--- /dev/null
+++ b/docs/holiday-calendar-implementation-plan.md
@@ -0,0 +1,393 @@
+# Holiday Calendar Implementation Plan
+
+## Ziel
+
+Planarchy soll standortabhaengige Feiertage fachlich korrekt berechnen koennen, sodass zwei Personen im selben Land, aber in unterschiedlichen Regionen oder Staedten, unterschiedliche `SAH` und damit unterschiedliche Chargeability erhalten koennen.
+
+Die Feiertagsaufloesung soll kuenftig diese Prioritaet haben:
+
+1. `metroCity`
+2. `federalState` / Region
+3. `country`
+
+Manuelle, ressourcenspezifische `PUBLIC_HOLIDAY`-Eintraege bleiben weiterhin moeglich und ueberschreiben bzw. ergaenzen den Kalender.
+
+## Ist-Zustand
+
+Aktuell existieren drei getrennte Mechanismen:
+
+1. Statisch codierte Feiertage in `packages/shared/src/constants/publicHolidays.ts`
+2. Batch-/Auto-Import von `PUBLIC_HOLIDAY`-Vacations
+3. Laufzeitberechnung von `SAH` bzw. Chargeability aus Land/Bundesland
+
+Die zentralen Luecken:
+
+- Es gibt kein Holiday-Stammdatenmodell in der Datenbank.
+- Es gibt keinen Editor fuer Feiertagskalender.
+- `metroCity` wird fuer Feiertage nicht ausgewertet.
+- Die aktuelle Logik ist faktisch auf Deutschland plus `federalState` zugeschnitten.
+- Feiertagswissen ist doppelt vorhanden: statische Kalenderlogik plus importierte `Vacation`-Datensaetze.
+
+## Zielarchitektur
+
+### 1. Holiday Calendar als Stammdatenmodell
+
+Neue Stammdatenobjekte:
+
+- `HolidayCalendar`
+- `HolidayCalendarEntry`
+
+`HolidayCalendar` beschreibt den Gueltigkeitsbereich eines Kalenders:
+
+- `scopeType`: `COUNTRY | STATE | CITY`
+- `countryId`
+- optional `stateCode`
+- optional `metroCityId`
+- `name`
+- `isActive`
+- optional `priority`
+
+`HolidayCalendarEntry` beschreibt den einzelnen Feiertag:
+
+- `holidayCalendarId`
+- `date`
+- `name`
+- optional `isRecurringAnnual`
+- optional `source`
+
+Fachregel:
+
+- Pro Scope soll es genau einen aktiven Kalender geben.
+- Die effektiven Feiertage eines Mitarbeiters ergeben sich aus Merge mit Prioritaet `country < state < city`.
+- Gleiche Daten auf engerem Scope ueberschreiben denselben Tag vom breiteren Scope.
+
+### 2. Laufzeit-Resolver statt statischer Sonderlogik
+
+Neue gemeinsame Backend-Komponente:
+
+- `resolveResourceHolidayCalendar(...)`
+
+Aufgaben:
+
+- liest Kalenderdaten fuer `countryId`, `federalState`, `metroCityId`
+- ermittelt die effektiven Feiertage fuer einen Zeitraum
+- merged diese mit expliziten `Vacation`-Eintraegen vom Typ `PUBLIC_HOLIDAY`
+- liefert:
+  - `publicHolidayStrings`
+  - `absenceDays`
+  - optional Debug-Metadaten zur Herkunft eines Feiertags
+
+Diese Komponente wird die einzige Quelle fuer Feiertagslogik in:
+
+- Chargeability Report
+- Chargeability Alerts
+- Computation Graph
+- ggf. weitere SAH-/Allocation-Pfade
+
+### 3. Import und Editor werden auf Stammdaten umgestellt
+
+Der heutige Batch-/Auto-Import darf nicht die Primarlogik fuer Feiertage bleiben.
+
+Zielbild:
+
+- Stammdatenkalender sind die Quelle der Wahrheit.
+- Optionaler Import in `Vacation` bleibt nur als Kompatibilitaets- oder Exportfunktion.
+- Bestehende `PUBLIC_HOLIDAY`-Vacations werden fuer Uebergangszeit weiter beruecksichtigt.
+
+## Datenmodell
+
+### Prisma-Erweiterungen
+
+Neue Modelle:
+
+```prisma
+model HolidayCalendar {
+  id          String   @id @default(cuid())
+  name        String
+  scopeType   HolidayCalendarScope
+  countryId   String
+  stateCode   String?
+  metroCityId String?
+  isActive    Boolean  @default(true)
+  priority    Int      @default(0)
+  createdAt   DateTime @default(now())
+  updatedAt   DateTime @updatedAt
+
+  country     Country  @relation(fields: [countryId], references: [id])
+  metroCity   MetroCity? @relation(fields: [metroCityId], references: [id])
+  entries     HolidayCalendarEntry[]
+
+  @@index([countryId, scopeType])
+  @@index([metroCityId])
+}
+
+model HolidayCalendarEntry {
+  id                String   @id @default(cuid())
+  holidayCalendarId String
+  date              DateTime @db.Date
+  name              String
+  isRecurringAnnual Boolean  @default(false)
+  source            String?
+  createdAt         DateTime @default(now())
+  updatedAt         DateTime @updatedAt
+
+  holidayCalendar   HolidayCalendar @relation(fields: [holidayCalendarId], references: [id], onDelete: Cascade)
+
+  @@unique([holidayCalendarId, date, name])
+  @@index([date])
+}
+```
+
+Neues Enum:
+
+```prisma
+enum HolidayCalendarScope {
+  COUNTRY
+  STATE
+  CITY
+}
+```
+
+### Integritaetsregeln
+
+- `STATE` verlangt `stateCode`.
+- `CITY` verlangt `metroCityId`.
+- `CITY` und `STATE` muessen zum selben `countryId` passen.
+- Ein `CITY`-Kalender darf nur fuer eine `MetroCity` des angegebenen Landes existieren.
+
+Diese Regeln werden teils im Schema, teils in Router-Validierung erzwungen.
+
+## API- und Backend-Pakete
+
+### Paket A: Schema und Datenzugriff
+
+Dateien:
+
+- `packages/db/prisma/schema.prisma`
+- neue Migration
+- ggf. `packages/shared/src/types/*`
+- ggf. `packages/shared/src/schemas/*`
+
+Ergebnis:
+
+- Holiday-Calendar-Datenmodell ist vorhanden
+- Zod-/Shared-Typen fuer CRUD sind definiert
+
+### Paket B: Holiday Calendar Router
+
+Neue oder erweiterte API:
+
+- `packages/api/src/router/holiday-calendar.ts`
+- Router in `packages/api/src/index.ts`
+
+Operationen:
+
+- `listCalendars`
+- `getCalendarById`
+- `createCalendar`
+- `updateCalendar`
+- `deleteCalendar`
+- `createEntry`
+- `updateEntry`
+- `deleteEntry`
+- optional `previewResolvedHolidays`
+
+### Paket C: Gemeinsamer Resolver
+
+Dateien:
+
+- `packages/api/src/lib/holiday-resolver.ts`
+- bestehende Hilfen in `packages/api/src/lib/holiday-availability.ts` refactoren oder ersetzen
+
+Ergebnis:
+
+- einheitliche Feiertagsaufloesung fuer alle Backend-Pfade
+- keine neue statische Sonderlogik in Routern
+
+### Paket D: Integration in Berechnungen
+
+Betroffene Stellen:
+
+- `packages/api/src/router/chargeability-report.ts`
+- `packages/api/src/lib/chargeability-alerts.ts`
+- `packages/api/src/router/computation-graph.ts`
+- weitere `calculateSAH`-Aufrufer mit Feiertagsbezug
+
+Abnahme:
+
+- dieselbe Ressource liefert je nach `metroCity` / `federalState` unterschiedliche `SAH`
+- gleiche Eingaben erzeugen in allen Reports denselben Feiertagseffekt
+
+### Paket E: UI / Admin
+
+Betroffene Stellen:
+
+- neue Admin-Seite oder Erweiterung im Country-Admin
+- Wiederverwendung moeglicher Muster aus:
+  - `apps/web/src/components/admin/CountriesClient.tsx`
+  - `apps/web/src/components/vacations/PublicHolidayBatch.tsx`
+  - vorhandene Modal-/Table-Komponenten
+
+Ziel:
+
+- Kalender pro Land / Bundesland / Stadt anlegen und bearbeiten
+- Eintraege pro Jahr pflegen
+- Aufloesung fuer eine Beispiel-Ressource optional vorschauen
+
+### Paket F: Kompatibilitaet / Migration
+
+Uebergangsstrategie:
+
+1. Bestehende `PUBLIC_HOLIDAY`-Vacations bleiben gueltig.
+2. Neuer Resolver nutzt zuerst Stammdatenkalender plus manuelle Overrides.
+3. Batch-/Auto-Import wird als Legacy-Funktion markiert.
+4. Spaeter kann entschieden werden, ob Import nur noch Materialisierung fuer Sonderfaelle ist.
+
+## Fachliche Aufloesungsregeln
+
+### Prioritaet
+
+1. Manuelle ressourcenspezifische `PUBLIC_HOLIDAY`-Vacation
+2. `CITY`-Kalender
+3. `STATE`-Kalender
+4. `COUNTRY`-Kalender
+
+### Merge-Regeln
+
+- Gleiches Datum mehrfach:
+  - engster Scope gewinnt fuer Anzeige/Quelle
+  - fuer `SAH` zaehlt der Tag genau einmal
+- Feiertag auf Wochenende:
+  - erscheint im Kalender
+  - reduziert `SAH` nur, wenn der Tag laut Verfuegbarkeit ein Arbeitstag ist
+- Halbtag-Feiertage:
+  - aktuell nicht erforderlich
+  - nur aufnehmen, wenn fachlich explizit benoetigt
+
+## Umsetzung in parallelen Workern
+
+### Worker 1: Schema + Shared Contracts
+
+Verantwortung:
+
+- Prisma-Modelle
+- Migration
+- Shared Types / Zod Schemas
+
+Write Scope:
+
+- `packages/db/prisma/schema.prisma`
+- `packages/shared/src/types/*`
+- `packages/shared/src/schemas/*`
+
+### Worker 2: Backend Router + Validation
+
+Verantwortung:
+
+- CRUD-API fuer Holiday Calendars
+- Validierung von Scope-Regeln
+- Audit-Logging
+
+Write Scope:
+
+- `packages/api/src/router/holiday-calendar.ts`
+- `packages/api/src/index.ts`
+- eng verbundene Tests
+
+### Worker 3: Resolver + Berechnungsintegration
+
+Verantwortung:
+
+- gemeinsamer Holiday Resolver
+- Integration in Report, Alerts, Computation Graph
+- Entfernung duplizierter Feiertagslogik
+
+Write Scope:
+
+- `packages/api/src/lib/holiday-resolver.ts`
+- `packages/api/src/lib/holiday-availability.ts`
+- `packages/api/src/router/chargeability-report.ts`
+- `packages/api/src/lib/chargeability-alerts.ts`
+- `packages/api/src/router/computation-graph.ts`
+- eng verbundene Tests
+
+### Worker 4: Admin UI
+
+Verantwortung:
+
+- neue Holiday-Calendar-Admin-Oberflaeche
+- Calendar-Entry-Editing
+- optional Preview fuer aufgeloeste Feiertage
+
+Write Scope:
+
+- `apps/web/src/components/admin/*`
+- relevante App-Routen
+- eng verbundene UI-Tests falls vorhanden
+
+### Worker 5: Migration / Legacy Behavior / Verify
+
+Verantwortung:
+
+- Legacy Import klar einhaengen oder abgrenzen
+- Verify-/Smoke-Pfade
+- End-to-End-Pruefung der fachlichen Szenarien
+
+Write Scope:
+
+- `packages/api/src/lib/holiday-auto-import.ts`
+- `packages/api/src/router/vacation.ts`
+- Verify-Skripte und Tests
+
+## Teststrategie
+
+### Unit
+
+- Resolver merged `country + state + city` korrekt
+- `CITY` ueberschreibt `STATE`, `STATE` ergaenzt `COUNTRY`
+- manuelle `PUBLIC_HOLIDAY`-Vacation wird beruecksichtigt
+- identisches Datum wird nur einmal auf `SAH` angerechnet
+
+### Integration
+
+- Chargeability Report: zwei Ressourcen, gleiches Land, unterschiedliche Stadt, unterschiedliche `SAH`
+- Chargeability Alerts: derselbe Feiertagseffekt wie im Report
+- Computation Graph: dieselbe Feiertagsanzahl wie Resolver
+
+### UI
+
+- Kalender anlegen fuer `COUNTRY`, `STATE`, `CITY`
+- Eintrag anlegen/aendern/loeschen
+- Scope-Validierung verhindert ungueltige Kombinationen
+
+### Datenmigration / Regression
+
+- bestehende `PUBLIC_HOLIDAY`-Vacations bleiben wirksam
+- alte Batch-Funktion erzeugt keine Konflikte
+- Repo-weit:
+  - `pnpm test`
+  - `pnpm typecheck`
+  - relevanter E2E-Smoke fuer Admin-Pfad, falls vorhanden
+
+## Abnahme-Kriterien
+
+- Feiertage sind nicht mehr hart an Deutschland/Bundesland im Laufzeitpfad gekoppelt.
+- `metroCity` kann `SAH` fachlich beeinflussen.
+- Es gibt eine Admin-faehige Pflege fuer Feiertagskalender.
+- Report, Alerts und Computation Graph verwenden denselben Resolver.
+- Bestehende manuelle Feiertagsabwesenheiten bleiben kompatibel.
+
+## Empfohlene Reihenfolge
+
+1. Schema + Shared Contracts
+2. Backend Router
+3. Resolver + Integration
+4. UI
+5. Migration/Legacy und Gesamttests
+
+## Offene Produktentscheidungen
+
+- Sollen Feiertage kuenftig nur manuell gepflegt werden oder auch per externem Provider importierbar sein?
+- Brauchen wir Halbtag-Feiertage?
+- Reicht `metroCity` als lokaler Scope oder brauchen wir spaeter feinere Geo-Einheiten?
+- Soll Legacy-Batch-Import langfristig entfernt oder als Materialisierung behalten werden?
diff --git a/package.json b/package.json
index 2b75f0f..8ca0afd 100644
--- a/package.json
+++ b/package.json
@@ -6,13 +6,14 @@
     "dev": "turbo dev",
     "build": "turbo build",
     "lint": "turbo lint",
-    "test": "turbo test",
+    "test": "turbo run test:unit",
     "test:unit": "turbo test:unit",
     "test:e2e": "turbo test:e2e",
-    "db:push": "pnpm --filter @capakraken/db db:push",
-    "db:migrate": "pnpm --filter @capakraken/db db:migrate",
-    "db:seed": "pnpm --filter @capakraken/db db:seed",
-    "db:studio": "pnpm --filter @capakraken/db db:studio",
+    "db:doctor": "node ./scripts/db-doctor.mjs capakraken",
+    "db:push": "node ./scripts/with-env.mjs pnpm --filter @capakraken/db db:push",
+    "db:migrate": "node ./scripts/with-env.mjs pnpm --filter @capakraken/db db:migrate",
+    "db:seed": "node ./scripts/with-env.mjs pnpm --filter @capakraken/db db:seed",
+    "db:studio": "node ./scripts/with-env.mjs pnpm --filter @capakraken/db db:studio",
     "db:reset:dispo": "pnpm --filter @capakraken/db db:reset:dispo",
     "db:import:dispo": "pnpm --filter @capakraken/db db:import:dispo",
     "db:readiness:demand-assignment": "pnpm --filter @capakraken/db db:readiness:demand-assignment",
diff --git a/packages/api/package.json b/packages/api/package.json
index e5acab4..2efd570 100644
--- a/packages/api/package.json
+++ b/packages/api/package.json
@@ -8,6 +8,7 @@
     "./router": "./src/router/index.ts",
     "./trpc": "./src/trpc.ts",
     "./sse": "./src/sse/event-bus.ts",
+    "./lib/audit": "./src/lib/audit.ts",
     "./lib/reminder-scheduler": "./src/lib/reminder-scheduler.ts",
     "./lib/logger": "./src/lib/logger.ts",
     "./middleware/rate-limit": "./src/middleware/rate-limit.ts"
diff --git a/packages/api/src/__tests__/allocation-router.test.ts b/packages/api/src/__tests__/allocation-router.test.ts
index c2788bd..3cbd213 100644
--- a/packages/api/src/__tests__/allocation-router.test.ts
+++ b/packages/api/src/__tests__/allocation-router.test.ts
@@ -1,13 +1,14 @@
 import { AllocationStatus, SystemRole } from "@capakraken/shared";
 import { describe, expect, it, vi } from "vitest";
 import { allocationRouter } from "../router/allocation.js";
-import { emitAllocationCreated, emitAllocationDeleted } from "../sse/event-bus.js";
+import { emitAllocationCreated, emitAllocationDeleted, emitNotificationCreated } from "../sse/event-bus.js";
 import { createCallerFactory } from "../trpc.js";
 
 vi.mock("../sse/event-bus.js", () => ({
   emitAllocationCreated: vi.fn(),
   emitAllocationDeleted: vi.fn(),
   emitAllocationUpdated: vi.fn(),
+  emitNotificationCreated: vi.fn(),
 }));
 
 vi.mock("../lib/budget-alerts.js", () => ({
@@ -18,6 +19,10 @@ vi.mock("../lib/cache.js", () => ({
   invalidateDashboardCache: vi.fn(),
 }));
 
+vi.mock("../lib/webhook-dispatcher.js", () => ({
+  dispatchWebhooks: vi.fn().mockResolvedValue(undefined),
+}));
+
 const createCaller = createCallerFactory(allocationRouter);
 
 function createManagerCaller(db: Record<string, unknown>) {
@@ -35,7 +40,100 @@ function createManagerCaller(db: Record<string, unknown>) {
   });
 }
 
+function createDemandWorkflowDb(overrides: Record<string, unknown> = {}) {
+  const db = {
+    project: {
+      findUnique: vi.fn().mockResolvedValue({ id: "project_1", name: "Project One" }),
+    },
+    role: {
+      findUnique: vi.fn().mockResolvedValue({ name: "FX Artist" }),
+    },
+    user: {
+      findMany: vi.fn().mockResolvedValue([{ id: "mgr_1" }, { id: "admin_1" }]),
+    },
+    notification: {
+      create: vi.fn().mockImplementation(async ({ data }: { data: { userId: string } }) => ({
+        id: `notif_${data.userId}`,
+      })),
+    },
+    auditLog: {
+      create: vi.fn().mockResolvedValue({}),
+    },
+  };
+
+  return {
+    ...db,
+    ...overrides,
+    project: { ...db.project, ...(overrides.project as Record<string, unknown> | undefined) },
+    role: { ...db.role, ...(overrides.role as Record<string, unknown> | undefined) },
+    user: { ...db.user, ...(overrides.user as Record<string, unknown> | undefined) },
+    notification: {
+      ...db.notification,
+      ...(overrides.notification as Record<string, unknown> | undefined),
+    },
+    auditLog: { ...db.auditLog, ...(overrides.auditLog as Record<string, unknown> | undefined) },
+  };
+}
+
 describe("allocation entry resolution router", () => {
+  it("excludes regional holidays from resource availability coverage", async () => {
+    const db = {
+      resource: {
+        findUnique: vi.fn().mockResolvedValue({
+          id: "resource_1",
+          displayName: "Bruce Banner",
+          eid: "E-001",
+          fte: 1,
+          availability: {
+            monday: 8,
+            tuesday: 8,
+            wednesday: 8,
+            thursday: 8,
+            friday: 8,
+            saturday: 0,
+            sunday: 0,
+          },
+          countryId: "country_de",
+          federalState: "BY",
+          metroCityId: null,
+          country: { dailyWorkingHours: 8, code: "DE" },
+          metroCity: null,
+        }),
+      },
+      assignment: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            id: "assignment_1",
+            startDate: new Date("2026-01-05T00:00:00.000Z"),
+            endDate: new Date("2026-01-06T00:00:00.000Z"),
+            hoursPerDay: 8,
+            status: AllocationStatus.CONFIRMED,
+            project: { name: "Gamma", shortCode: "GAM" },
+          },
+        ]),
+      },
+    };
+
+    const caller = createManagerCaller(db);
+    const result = await caller.checkResourceAvailability({
+      resourceId: "resource_1",
+      startDate: new Date("2026-01-05T00:00:00.000Z"),
+      endDate: new Date("2026-01-06T00:00:00.000Z"),
+      hoursPerDay: 8,
+    });
+
+    expect(result).toMatchObject({
+      dailyCapacity: 8,
+      totalWorkingDays: 1,
+      availableDays: 0,
+      partialDays: 0,
+      conflictDays: 1,
+      totalAvailableHours: 0,
+      totalRequestedHours: 8,
+      coveragePercent: 0,
+    });
+  });
+
   it("creates an open demand through allocation.create without requiring isPlaceholder", async () => {
     const createdDemandRequirement = {
       id: "demand_1",
@@ -187,6 +285,7 @@ describe("allocation entry resolution router", () => {
 
   it("creates an explicit demand requirement without dual-writing a legacy allocation row", async () => {
     vi.mocked(emitAllocationCreated).mockClear();
+    vi.mocked(emitNotificationCreated).mockClear();
 
     const createdDemandRequirement = {
       id: "demand_explicit_1",
@@ -206,18 +305,14 @@ describe("allocation entry resolution router", () => {
       roleEntity: { id: "role_fx", name: "FX Artist", color: "#222222" },
     };
 
-    const db = {
-      project: {
-        findUnique: vi.fn().mockResolvedValue({ id: "project_1" }),
-      },
+    const db = createDemandWorkflowDb({
       demandRequirement: {
         create: vi.fn().mockResolvedValue(createdDemandRequirement),
       },
-      auditLog: {
-        create: vi.fn().mockResolvedValue({}),
-      },
+    }) as Record<string, unknown>;
+    Object.assign(db, {
       $transaction: vi.fn(async (callback: (tx: unknown) => unknown) => callback(db)),
-    };
+    });
 
     const caller = createManagerCaller(db);
     const result = await caller.createDemandRequirement({
@@ -247,6 +342,8 @@ describe("allocation entry resolution router", () => {
       projectId: "project_1",
       resourceId: null,
     });
+    expect(db.notification.create).toHaveBeenCalledTimes(2);
+    expect(emitNotificationCreated).toHaveBeenCalledTimes(2);
   });
 
   it("creates an explicit assignment without dual-writing a legacy allocation row", async () => {
@@ -730,4 +827,3 @@ describe("allocation entry resolution router", () => {
     });
   });
 });
-
diff --git a/packages/api/src/__tests__/assistant-insights.test.ts b/packages/api/src/__tests__/assistant-insights.test.ts
new file mode 100644
index 0000000..2c27a79
--- /dev/null
+++ b/packages/api/src/__tests__/assistant-insights.test.ts
@@ -0,0 +1,126 @@
+import { describe, expect, it } from "vitest";
+import { buildAssistantInsight } from "../router/assistant-insights.js";
+
+describe("assistant insights", () => {
+  it("builds a transparent chargeability insight from holiday-aware payloads", () => {
+    const insight = buildAssistantInsight("get_chargeability", {
+      resource: "Bruce Banner",
+      month: "2026-01",
+      chargeability: "42.9%",
+      chargeabilityPct: 42.9,
+      targetPct: 80,
+      availableHours: 168,
+      bookedHours: 72,
+      unassignedHours: 96,
+      targetHours: 134.4,
+      baseWorkingDays: 23,
+      workingDays: 21,
+      baseAvailableHours: 184,
+      locationContext: { country: "Deutschland", federalState: "BY", metroCity: "Augsburg" },
+      holidaySummary: { count: 2, workdayCount: 2, hoursDeduction: 16 },
+      absenceSummary: { dayEquivalent: 0.5, hoursDeduction: 4 },
+    });
+
+    expect(insight).toEqual(
+      expect.objectContaining({
+        kind: "chargeability",
+        title: "Bruce Banner · 2026-01",
+        metrics: expect.arrayContaining([
+          expect.objectContaining({ label: "Chargeability", value: "42.9%", tone: "warn" }),
+          expect.objectContaining({ label: "Available", value: "168 h" }),
+          expect.objectContaining({ label: "Target", value: "134.4 h" }),
+        ]),
+        sections: expect.arrayContaining([
+          expect.objectContaining({
+            title: "Basis",
+            metrics: expect.arrayContaining([
+              expect.objectContaining({ label: "Location", value: "Augsburg, BY, Deutschland" }),
+            ]),
+          }),
+          expect.objectContaining({
+            title: "Deductions",
+            metrics: expect.arrayContaining([
+              expect.objectContaining({ label: "Holiday deduction", value: "16 h" }),
+              expect.objectContaining({ label: "Absence deduction", value: "4 h" }),
+            ]),
+          }),
+        ]),
+      }),
+    );
+  });
+
+  it("builds a holiday comparison insight with regional scope counts", () => {
+    const insight = buildAssistantInsight("list_holidays_by_region", {
+      locationContext: { countryCode: "DE", federalState: "BY" },
+      count: 14,
+      periodStart: "2026-01-01",
+      periodEnd: "2026-12-31",
+      summary: {
+        byScope: [
+          { scope: "NATIONAL", count: 9 },
+          { scope: "STATE", count: 5 },
+        ],
+      },
+    });
+
+    expect(insight).toEqual(
+      expect.objectContaining({
+        kind: "holiday_region",
+        title: "BY, DE",
+        metrics: expect.arrayContaining([
+          expect.objectContaining({ label: "Resolved holidays", value: "14" }),
+        ]),
+        sections: [
+          expect.objectContaining({
+            title: "Scopes",
+            metrics: expect.arrayContaining([
+              expect.objectContaining({ label: "STATE", value: "5" }),
+            ]),
+          }),
+        ],
+      }),
+    );
+  });
+
+  it("builds a best-resource insight from staffing recommendations", () => {
+    const insight = buildAssistantInsight("find_best_project_resource", {
+      project: { name: "Gelddruckmaschine", shortCode: "GDM" },
+      period: { startDate: "2026-04-01", endDate: "2026-04-21", minHoursPerDay: 3, rankingMode: "lowest_lcr" },
+      candidateCount: 4,
+      bestMatch: {
+        name: "Jane Doe",
+        role: "TD",
+        chapter: "Lighting",
+        country: "Deutschland",
+        federalState: "BY",
+        metroCity: "Muenchen",
+        lcr: "€85.00",
+        remainingHours: 74,
+        remainingHoursPerDay: 3.5,
+        availableHours: 120,
+        baseAvailableHours: 136,
+        holidaySummary: { hoursDeduction: 8 },
+        absenceSummary: { hoursDeduction: 0 },
+      },
+    });
+
+    expect(insight).toEqual(
+      expect.objectContaining({
+        kind: "resource_match",
+        title: "GDM staffing",
+        metrics: expect.arrayContaining([
+          expect.objectContaining({ label: "Best match", value: "Jane Doe" }),
+          expect.objectContaining({ label: "Remaining", value: "74 h", tone: "good" }),
+        ]),
+        sections: expect.arrayContaining([
+          expect.objectContaining({
+            title: "Selection",
+            metrics: expect.arrayContaining([
+              expect.objectContaining({ label: "Location", value: "Muenchen, BY, Deutschland" }),
+            ]),
+          }),
+        ]),
+      }),
+    );
+  });
+});
diff --git a/packages/api/src/__tests__/assistant-router.test.ts b/packages/api/src/__tests__/assistant-router.test.ts
new file mode 100644
index 0000000..fe6ec0b
--- /dev/null
+++ b/packages/api/src/__tests__/assistant-router.test.ts
@@ -0,0 +1,34 @@
+import { describe, expect, it } from "vitest";
+import { PermissionKey, type PermissionKey as PermissionKeyValue } from "@capakraken/shared";
+import { getAvailableAssistantTools } from "../router/assistant.js";
+
+function getToolNames(permissions: PermissionKeyValue[]) {
+  return getAvailableAssistantTools(new Set(permissions)).map((tool) => tool.function.name);
+}
+
+describe("assistant router tool gating", () => {
+  it("hides advanced tools unless the dedicated assistant permission is granted", () => {
+    const withoutAdvanced = getToolNames([PermissionKey.VIEW_COSTS]);
+    const withAdvanced = getToolNames([
+      PermissionKey.VIEW_COSTS,
+      PermissionKey.USE_ASSISTANT_ADVANCED_TOOLS,
+    ]);
+
+    expect(withoutAdvanced).not.toContain("find_best_project_resource");
+    expect(withAdvanced).toContain("find_best_project_resource");
+  });
+
+  it("keeps user administration tools behind manageUsers", () => {
+    const withoutManageUsers = getToolNames([]);
+    const withManageUsers = getToolNames([PermissionKey.MANAGE_USERS]);
+
+    expect(withoutManageUsers).not.toContain("list_users");
+    expect(withManageUsers).toContain("list_users");
+  });
+
+  it("continues to hide cost-aware advanced tools when viewCosts is missing", () => {
+    const names = getToolNames([PermissionKey.USE_ASSISTANT_ADVANCED_TOOLS]);
+
+    expect(names).not.toContain("find_best_project_resource");
+  });
+});
diff --git a/packages/api/src/__tests__/assistant-tools-advanced.test.ts b/packages/api/src/__tests__/assistant-tools-advanced.test.ts
new file mode 100644
index 0000000..c695666
--- /dev/null
+++ b/packages/api/src/__tests__/assistant-tools-advanced.test.ts
@@ -0,0 +1,262 @@
+import { describe, expect, it, vi } from "vitest";
+import { PermissionKey } from "@capakraken/shared";
+
+vi.mock("@capakraken/application", async (importOriginal) => {
+  const actual = await importOriginal<typeof import("@capakraken/application")>();
+  return {
+    ...actual,
+    getDashboardBudgetForecast: vi.fn().mockResolvedValue([]),
+    getDashboardPeakTimes: vi.fn().mockResolvedValue([]),
+  };
+});
+
+import { executeTool, type ToolContext } from "../router/assistant-tools.js";
+
+function createToolContext(
+  db: Record<string, unknown>,
+  permissions: PermissionKey[] = [],
+): ToolContext {
+  return {
+    db: db as ToolContext["db"],
+    userId: "user_1",
+    userRole: "ADMIN",
+    permissions: new Set(permissions),
+  };
+}
+
+describe("assistant advanced tools and scoping", () => {
+  it("finds the best project resource with holiday-aware remaining capacity and LCR ranking", async () => {
+    const assignmentFindMany = vi
+      .fn()
+      .mockResolvedValueOnce([
+        {
+          resourceId: "res_carol",
+          hoursPerDay: 2,
+          startDate: new Date("2026-01-05T00:00:00.000Z"),
+          endDate: new Date("2026-01-16T00:00:00.000Z"),
+          status: "PROPOSED",
+          resource: {
+            id: "res_carol",
+            eid: "carol.danvers",
+            displayName: "Carol Danvers",
+            chapter: "Delivery",
+            lcrCents: 7664,
+            availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+            countryId: "country_de",
+            federalState: "HH",
+            metroCityId: "city_hamburg",
+            country: { code: "DE", name: "Deutschland" },
+            metroCity: { name: "Hamburg" },
+            areaRole: { name: "Artist" },
+          },
+        },
+        {
+          resourceId: "res_steve",
+          hoursPerDay: 4,
+          startDate: new Date("2026-01-05T00:00:00.000Z"),
+          endDate: new Date("2026-01-16T00:00:00.000Z"),
+          status: "CONFIRMED",
+          resource: {
+            id: "res_steve",
+            eid: "steve.rogers",
+            displayName: "Steve Rogers",
+            chapter: "Delivery",
+            lcrCents: 13377,
+            availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+            countryId: "country_de",
+            federalState: "BY",
+            metroCityId: "city_augsburg",
+            country: { code: "DE", name: "Deutschland" },
+            metroCity: { name: "Augsburg" },
+            areaRole: { name: "Artist" },
+          },
+        },
+      ])
+      .mockResolvedValueOnce([
+        {
+          resourceId: "res_carol",
+          projectId: "project_lari",
+          hoursPerDay: 2,
+          startDate: new Date("2026-01-05T00:00:00.000Z"),
+          endDate: new Date("2026-01-16T00:00:00.000Z"),
+          status: "PROPOSED",
+          project: { name: "Gelddruckmaschine", shortCode: "LARI" },
+        },
+        {
+          resourceId: "res_steve",
+          projectId: "project_lari",
+          hoursPerDay: 4,
+          startDate: new Date("2026-01-05T00:00:00.000Z"),
+          endDate: new Date("2026-01-16T00:00:00.000Z"),
+          status: "CONFIRMED",
+          project: { name: "Gelddruckmaschine", shortCode: "LARI" },
+        },
+      ]);
+
+    const ctx = createToolContext(
+      {
+        project: {
+          findUnique: vi
+            .fn()
+            .mockResolvedValueOnce(null)
+            .mockResolvedValueOnce({
+              id: "project_lari",
+              name: "Gelddruckmaschine",
+              shortCode: "LARI",
+              status: "ACTIVE",
+              responsiblePerson: "Larissa Joos",
+            }),
+          findFirst: vi.fn(),
+        },
+        assignment: {
+          findMany: assignmentFindMany,
+        },
+        vacation: {
+          findMany: vi.fn().mockResolvedValue([]),
+        },
+      },
+      [PermissionKey.VIEW_COSTS, PermissionKey.USE_ASSISTANT_ADVANCED_TOOLS],
+    );
+
+    const result = await executeTool(
+      "find_best_project_resource",
+      JSON.stringify({
+        projectIdentifier: "LARI",
+        startDate: "2026-01-05",
+        endDate: "2026-01-16",
+        minHoursPerDay: 3,
+        rankingMode: "lowest_lcr",
+      }),
+      ctx,
+    );
+
+    const parsed = JSON.parse(result.content) as {
+      project: { shortCode: string };
+      candidateCount: number;
+      bestMatch: {
+        name: string;
+        remainingHoursPerDay: number;
+        lcrCents: number | null;
+        federalState: string | null;
+        metroCity: string | null;
+        baseAvailableHours: number;
+        holidaySummary: { count: number };
+      };
+      candidates: Array<{
+        name: string;
+        remainingHoursPerDay: number;
+        workingDays: number;
+        baseAvailableHours: number;
+        holidaySummary: { count: number; hoursDeduction: number };
+        capacityBreakdown: { holidayHoursDeduction: number };
+      }>;
+    };
+
+    expect(parsed.project.shortCode).toBe("LARI");
+    expect(parsed.candidateCount).toBe(2);
+    expect(parsed.bestMatch).toEqual(
+      expect.objectContaining({
+        name: "Carol Danvers",
+        remainingHoursPerDay: 6,
+        lcrCents: 7664,
+        federalState: "HH",
+        metroCity: "Hamburg",
+        baseAvailableHours: 80,
+        holidaySummary: expect.objectContaining({ count: 0 }),
+      }),
+    );
+    expect(parsed.candidates).toEqual([
+      expect.objectContaining({
+        name: "Carol Danvers",
+        remainingHoursPerDay: 6,
+        workingDays: 10,
+        baseAvailableHours: 80,
+        holidaySummary: expect.objectContaining({ count: 0, hoursDeduction: 0 }),
+        capacityBreakdown: expect.objectContaining({ holidayHoursDeduction: 0 }),
+      }),
+      expect.objectContaining({
+        name: "Steve Rogers",
+        remainingHoursPerDay: 4,
+        workingDays: 9,
+        baseAvailableHours: 80,
+        holidaySummary: expect.objectContaining({ count: 1, hoursDeduction: 8 }),
+        capacityBreakdown: expect.objectContaining({ holidayHoursDeduction: 8 }),
+      }),
+    ]);
+  });
+
+  it("requires the dedicated advanced assistant permission for the high-level resource tool", async () => {
+    const ctx = createToolContext({}, [PermissionKey.VIEW_COSTS]);
+
+    const result = await executeTool(
+      "find_best_project_resource",
+      JSON.stringify({ projectIdentifier: "LARI" }),
+      ctx,
+    );
+
+    expect(JSON.parse(result.content)).toEqual(
+      expect.objectContaining({
+        error: expect.stringContaining(PermissionKey.USE_ASSISTANT_ADVANCED_TOOLS),
+      }),
+    );
+  });
+
+  it("scopes assistant notification listing to the current user", async () => {
+    const findMany = vi.fn().mockResolvedValue([]);
+    const ctx = createToolContext({
+      notification: {
+        findMany,
+      },
+    });
+
+    await executeTool("list_notifications", JSON.stringify({ unreadOnly: true }), ctx);
+
+    expect(findMany).toHaveBeenCalledWith(
+      expect.objectContaining({
+        where: expect.objectContaining({
+          userId: "user_1",
+          readAt: null,
+        }),
+      }),
+    );
+  });
+
+  it("rejects marking notifications that do not belong to the current user", async () => {
+    const update = vi.fn();
+    const ctx = createToolContext({
+      notification: {
+        findUnique: vi.fn().mockResolvedValue({ id: "notif_1", userId: "someone_else" }),
+        update,
+      },
+    });
+
+    const result = await executeTool(
+      "mark_notification_read",
+      JSON.stringify({ notificationId: "notif_1" }),
+      ctx,
+    );
+
+    expect(JSON.parse(result.content)).toEqual({
+      error: "Access denied: this notification does not belong to you",
+    });
+    expect(update).not.toHaveBeenCalled();
+  });
+
+  it("requires manageUsers before listing users through the assistant", async () => {
+    const findMany = vi.fn();
+    const ctx = createToolContext({
+      user: {
+        findMany,
+      },
+    });
+
+    const result = await executeTool("list_users", JSON.stringify({ limit: 10 }), ctx);
+
+    expect(JSON.parse(result.content)).toEqual(
+      expect.objectContaining({
+        error: expect.stringContaining(PermissionKey.MANAGE_USERS),
+      }),
+    );
+    expect(findMany).not.toHaveBeenCalled();
+  });
+});
diff --git a/packages/api/src/__tests__/assistant-tools-holidays.test.ts b/packages/api/src/__tests__/assistant-tools-holidays.test.ts
new file mode 100644
index 0000000..a1effe2
--- /dev/null
+++ b/packages/api/src/__tests__/assistant-tools-holidays.test.ts
@@ -0,0 +1,575 @@
+import { describe, expect, it, vi } from "vitest";
+
+vi.mock("@capakraken/application", async (importOriginal) => {
+  const actual = await importOriginal<typeof import("@capakraken/application")>();
+  return {
+    ...actual,
+    getDashboardBudgetForecast: vi.fn().mockResolvedValue([]),
+  };
+});
+
+import { executeTool, type ToolContext } from "../router/assistant-tools.js";
+
+function createToolContext(
+  db: Record<string, unknown>,
+  permissions: string[] = [],
+): ToolContext {
+  return {
+    db: db as ToolContext["db"],
+    userId: "user_1",
+    userRole: "ADMIN",
+    permissions: new Set(permissions) as ToolContext["permissions"],
+  };
+}
+
+describe("assistant holiday tools", () => {
+  it("lists regional holidays and distinguishes Bavaria from Hamburg", async () => {
+    const ctx = createToolContext({});
+
+    const bavaria = await executeTool(
+      "list_holidays_by_region",
+      JSON.stringify({ countryCode: "DE", federalState: "BY", year: 2026 }),
+      ctx,
+    );
+    const hamburg = await executeTool(
+      "list_holidays_by_region",
+      JSON.stringify({ countryCode: "DE", federalState: "HH", year: 2026 }),
+      ctx,
+    );
+
+    const bavariaResult = JSON.parse(bavaria.content) as {
+      count: number;
+      locationContext: { federalState: string | null };
+      summary: { byScope: Array<{ scope: string; count: number }> };
+      holidays: Array<{ name: string; date: string }>;
+    };
+    const hamburgResult = JSON.parse(hamburg.content) as {
+      count: number;
+      locationContext: { federalState: string | null };
+      holidays: Array<{ name: string; date: string }>;
+    };
+
+    expect(bavariaResult.count).toBeGreaterThan(hamburgResult.count);
+    expect(bavariaResult.locationContext.federalState).toBe("BY");
+    expect(bavariaResult.summary.byScope).toEqual(
+      expect.arrayContaining([expect.objectContaining({ scope: "STATE" })]),
+    );
+    expect(bavariaResult.holidays).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({ name: "Heilige Drei Könige", date: "2026-01-06" }),
+      ]),
+    );
+    expect(hamburgResult.holidays).not.toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({ name: "Heilige Drei Könige", date: "2026-01-06" }),
+      ]),
+    );
+  });
+
+  it("resolves resource-specific holidays including city-local dates", async () => {
+    const db = {
+      resource: {
+        findUnique: vi
+          .fn()
+          .mockResolvedValueOnce(null)
+          .mockResolvedValueOnce({ id: "res_1", eid: "bruce.banner", displayName: "Bruce Banner", federalState: "BY", countryId: "country_de", metroCityId: "city_augsburg", country: { code: "DE", name: "Deutschland" }, metroCity: { name: "Augsburg" } }),
+        findFirst: vi.fn(),
+      },
+    };
+    const ctx = createToolContext(db);
+
+    const result = await executeTool(
+      "get_resource_holidays",
+      JSON.stringify({ identifier: "bruce.banner", year: 2026 }),
+      ctx,
+    );
+
+    const parsed = JSON.parse(result.content) as {
+      resource: { eid: string; federalState: string | null; metroCity: string | null };
+      summary: { byScope: Array<{ scope: string; count: number }> };
+      holidays: Array<{ name: string; date: string }>;
+    };
+
+    expect(parsed.resource).toEqual(
+      expect.objectContaining({
+        eid: "bruce.banner",
+        federalState: "BY",
+        metroCity: "Augsburg",
+      }),
+    );
+    expect(parsed.holidays).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({ name: "Augsburger Friedensfest", date: "2026-08-08" }),
+      ]),
+    );
+    expect(parsed.summary.byScope).toEqual(
+      expect.arrayContaining([expect.objectContaining({ scope: "CITY" })]),
+    );
+  });
+
+  it("calculates chargeability with regional holidays excluded from booked and available hours", async () => {
+    const db = {
+      resource: {
+        findUnique: vi
+          .fn()
+          .mockResolvedValueOnce({
+            id: "res_1",
+            displayName: "Bruce Banner",
+            eid: "bruce.banner",
+            fte: 1,
+            chargeabilityTarget: 80,
+            availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+            countryId: "country_de",
+            federalState: "BY",
+            metroCityId: null,
+            country: { code: "DE", dailyWorkingHours: 8 },
+            metroCity: null,
+          }),
+        findFirst: vi.fn(),
+      },
+      assignment: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            hoursPerDay: 8,
+            startDate: new Date("2026-01-05T00:00:00.000Z"),
+            endDate: new Date("2026-01-06T00:00:00.000Z"),
+            status: "CONFIRMED",
+            project: { name: "Gamma", shortCode: "GAM" },
+          },
+        ]),
+      },
+    };
+    const ctx = createToolContext(db);
+
+    const result = await executeTool(
+      "get_chargeability",
+      JSON.stringify({ resourceId: "res_1", month: "2026-01" }),
+      ctx,
+    );
+
+    const parsed = JSON.parse(result.content) as {
+      baseWorkingDays: number;
+      baseAvailableHours: number;
+      availableHours: number;
+      bookedHours: number;
+      workingDays: number;
+      targetHours: number;
+      unassignedHours: number;
+      holidaySummary: { count: number; workdayCount: number; hoursDeduction: number };
+      capacityBreakdown: { formula: string; holidayHoursDeduction: number; absenceHoursDeduction: number };
+      locationContext: { federalState: string | null };
+      allocations: Array<{ hours: number }>;
+    };
+
+    expect(parsed.bookedHours).toBe(8);
+    expect(parsed.allocations).toEqual([expect.objectContaining({ hours: 8 })]);
+    expect(parsed.baseWorkingDays).toBe(23);
+    expect(parsed.baseAvailableHours).toBe(184);
+    expect(parsed.availableHours).toBe(168);
+    expect(parsed.workingDays).toBe(21);
+    expect(parsed.targetHours).toBe(134.4);
+    expect(parsed.unassignedHours).toBe(160);
+    expect(parsed.locationContext.federalState).toBe("BY");
+    expect(parsed.holidaySummary).toEqual(
+      expect.objectContaining({
+        count: 2,
+        workdayCount: 2,
+        hoursDeduction: 16,
+      }),
+    );
+    expect(parsed.capacityBreakdown).toEqual(
+      expect.objectContaining({
+        formula: "baseAvailableHours - holidayHoursDeduction - absenceHoursDeduction = availableHours",
+        holidayHoursDeduction: 16,
+        absenceHoursDeduction: 0,
+      }),
+    );
+  });
+
+  it("returns holiday-aware budget forecast data from the dashboard use-case", async () => {
+    const { getDashboardBudgetForecast } = await import("@capakraken/application");
+    vi.mocked(getDashboardBudgetForecast).mockResolvedValue([
+      {
+        projectId: "project_1",
+        projectName: "Gelddruckmaschine",
+        shortCode: "GDM",
+        budgetCents: 100_000,
+        spentCents: 60_000,
+        burnRate: 5_000,
+        pctUsed: 60,
+        estimatedExhaustionDate: "2026-02-20",
+      },
+    ]);
+
+    const ctx = createToolContext({}, ["viewCosts"]);
+    const result = await executeTool("get_budget_forecast", "{}", ctx);
+    const parsed = JSON.parse(result.content) as {
+      forecasts: Array<{
+        projectName: string;
+        shortCode: string;
+        budgetCents: number;
+        spentCents: number;
+        remainingCents: number;
+        projectedCents: number;
+        burnRateCents: number;
+        burnStatus: string;
+      }>;
+    };
+
+    expect(getDashboardBudgetForecast).toHaveBeenCalled();
+    expect(parsed.forecasts).toEqual([
+      expect.objectContaining({
+        projectName: "Gelddruckmaschine",
+        shortCode: "GDM",
+        budgetCents: 100_000,
+        spentCents: 60_000,
+        remainingCents: 40_000,
+        projectedCents: 100_000,
+        burnRateCents: 5_000,
+        burnStatus: "on_track",
+      }),
+    ]);
+  });
+
+  it("checks resource availability with regional holidays excluded from capacity", async () => {
+    const db = {
+      resource: {
+        findUnique: vi
+          .fn()
+          .mockResolvedValueOnce({
+            id: "res_1",
+            displayName: "Bruce Banner",
+            fte: 1,
+            availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+            countryId: "country_de",
+            federalState: "BY",
+            metroCityId: null,
+            country: { code: "DE" },
+            metroCity: null,
+          }),
+        findFirst: vi.fn(),
+      },
+      assignment: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            hoursPerDay: 8,
+            startDate: new Date("2026-01-05T00:00:00.000Z"),
+            endDate: new Date("2026-01-06T00:00:00.000Z"),
+            status: "CONFIRMED",
+            project: { name: "Gamma", shortCode: "GAM" },
+          },
+        ]),
+      },
+      vacation: {
+        findMany: vi.fn().mockResolvedValue([]),
+      },
+    };
+    const ctx = createToolContext(db);
+
+    const result = await executeTool(
+      "check_resource_availability",
+      JSON.stringify({ resourceId: "res_1", startDate: "2026-01-05", endDate: "2026-01-06" }),
+      ctx,
+    );
+
+    const parsed = JSON.parse(result.content) as {
+      workingDays: number;
+      periodAvailableHours: number;
+      periodBookedHours: number;
+      periodRemainingHours: number;
+      availableHoursPerDay: number;
+      isFullyAvailable: boolean;
+    };
+
+    expect(parsed.workingDays).toBe(1);
+    expect(parsed.periodAvailableHours).toBe(8);
+    expect(parsed.periodBookedHours).toBe(8);
+    expect(parsed.periodRemainingHours).toBe(0);
+    expect(parsed.availableHoursPerDay).toBe(0);
+    expect(parsed.isFullyAvailable).toBe(false);
+  });
+
+  it("keeps scenario simulation flat when a proposed change falls on a local holiday", async () => {
+    const db = {
+      project: {
+        findUnique: vi.fn().mockResolvedValue({
+          id: "project_1",
+          name: "Holiday Project",
+          budgetCents: 500_000,
+          startDate: new Date("2026-01-01T00:00:00.000Z"),
+          endDate: new Date("2026-01-31T00:00:00.000Z"),
+        }),
+      },
+      assignment: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            id: "assignment_1",
+            resourceId: "res_1",
+            hoursPerDay: 8,
+            startDate: new Date("2026-01-05T00:00:00.000Z"),
+            endDate: new Date("2026-01-05T00:00:00.000Z"),
+            status: "CONFIRMED",
+            resource: {
+              id: "res_1",
+              displayName: "Bruce Banner",
+              lcrCents: 100,
+              availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+              chargeabilityTarget: 80,
+              countryId: "country_de",
+              federalState: "BY",
+              metroCityId: null,
+              country: { code: "DE", dailyWorkingHours: 8 },
+              metroCity: null,
+            },
+          },
+        ]),
+      },
+      resource: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            id: "res_1",
+            displayName: "Bruce Banner",
+            lcrCents: 100,
+            availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+            chargeabilityTarget: 80,
+            countryId: "country_de",
+            federalState: "BY",
+            metroCityId: null,
+            country: { code: "DE", dailyWorkingHours: 8 },
+            metroCity: null,
+          },
+        ]),
+      },
+    };
+    const ctx = createToolContext(db, ["manageAllocations"]);
+
+    const result = await executeTool(
+      "simulate_scenario",
+      JSON.stringify({
+        projectId: "project_1",
+        changes: [
+          {
+            resourceId: "res_1",
+            startDate: "2026-01-06",
+            endDate: "2026-01-06",
+            hoursPerDay: 8,
+          },
+        ],
+      }),
+      ctx,
+    );
+
+    const parsed = JSON.parse(result.content) as {
+      baseline: { totalHours: number; totalCostCents: number };
+      scenario: { totalHours: number; totalCostCents: number };
+      delta: { hours: number; costCents: number };
+    };
+
+    expect(parsed.baseline).toEqual(
+      expect.objectContaining({
+        totalHours: 8,
+        totalCostCents: 800,
+      }),
+    );
+    expect(parsed.scenario).toEqual(
+      expect.objectContaining({
+        totalHours: 8,
+        totalCostCents: 800,
+      }),
+    );
+    expect(parsed.delta).toEqual(
+      expect.objectContaining({
+        hours: 0,
+        costCents: 0,
+      }),
+    );
+  });
+
+  it("prefers resources without a local holiday in staffing suggestions", async () => {
+    const db = {
+      project: {
+        findFirst: vi.fn().mockResolvedValue({
+          id: "project_1",
+          name: "Holiday Project",
+          shortCode: "HP",
+          startDate: new Date("2026-01-06T00:00:00.000Z"),
+          endDate: new Date("2026-01-06T00:00:00.000Z"),
+        }),
+      },
+      resource: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            id: "res_by",
+            displayName: "Bavaria",
+            eid: "BY-1",
+            fte: 1,
+            lcrCents: 10000,
+            availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+            countryId: "country_de",
+            federalState: "BY",
+            metroCityId: null,
+            country: { code: "DE" },
+            metroCity: null,
+            areaRole: { name: "Consultant" },
+            chapter: "CGI",
+            assignments: [],
+          },
+          {
+            id: "res_hh",
+            displayName: "Hamburg",
+            eid: "HH-1",
+            fte: 1,
+            lcrCents: 10000,
+            availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+            countryId: "country_de",
+            federalState: "HH",
+            metroCityId: null,
+            country: { code: "DE" },
+            metroCity: null,
+            areaRole: { name: "Consultant" },
+            chapter: "CGI",
+            assignments: [],
+          },
+        ]),
+      },
+      vacation: {
+        findMany: vi.fn().mockResolvedValue([]),
+      },
+    };
+    const ctx = createToolContext(db);
+
+    const result = await executeTool(
+      "get_staffing_suggestions",
+      JSON.stringify({ projectId: "project_1", limit: 5 }),
+      ctx,
+    );
+
+    const parsed = JSON.parse(result.content) as {
+      suggestions: Array<{ name: string; availableHours: number }>;
+    };
+
+    expect(parsed.suggestions).toHaveLength(1);
+    expect(parsed.suggestions[0]).toEqual(
+      expect.objectContaining({ name: "Hamburg", availableHours: 8 }),
+    );
+  });
+
+  it("finds capacity with local holidays respected", async () => {
+    const db = {
+      resource: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            id: "res_by",
+            displayName: "Bavaria",
+            eid: "BY-1",
+            fte: 1,
+            availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+            countryId: "country_de",
+            federalState: "BY",
+            metroCityId: null,
+            country: { code: "DE" },
+            metroCity: null,
+            areaRole: { name: "Consultant" },
+            chapter: "CGI",
+            assignments: [],
+          },
+          {
+            id: "res_hh",
+            displayName: "Hamburg",
+            eid: "HH-1",
+            fte: 1,
+            availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+            countryId: "country_de",
+            federalState: "HH",
+            metroCityId: null,
+            country: { code: "DE" },
+            metroCity: null,
+            areaRole: { name: "Consultant" },
+            chapter: "CGI",
+            assignments: [],
+          },
+        ]),
+      },
+      vacation: {
+        findMany: vi.fn().mockResolvedValue([]),
+      },
+    };
+    const ctx = createToolContext(db);
+
+    const result = await executeTool(
+      "find_capacity",
+      JSON.stringify({ startDate: "2026-01-06", endDate: "2026-01-06", minHoursPerDay: 1 }),
+      ctx,
+    );
+
+    const parsed = JSON.parse(result.content) as {
+      results: Array<{ name: string; availableHours: number; availableHoursPerDay: number }>;
+    };
+
+    expect(parsed.results).toHaveLength(1);
+    expect(parsed.results[0]).toEqual(
+      expect.objectContaining({ name: "Hamburg", availableHours: 8, availableHoursPerDay: 8 }),
+    );
+  });
+
+  it("uses holiday-aware assignment hours for assistant shoring ratio", async () => {
+    const db = {
+      project: {
+        findUnique: vi
+          .fn()
+          .mockResolvedValueOnce({
+            id: "project_1",
+            name: "Holiday Project",
+            shortCode: "HP",
+            shoringThreshold: 55,
+            onshoreCountryCode: "DE",
+          }),
+      },
+      assignment: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            resourceId: "res_by",
+            hoursPerDay: 8,
+            startDate: new Date("2026-01-06T00:00:00.000Z"),
+            endDate: new Date("2026-01-06T00:00:00.000Z"),
+            resource: {
+              availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+              countryId: "country_de",
+              federalState: "BY",
+              metroCityId: null,
+              country: { code: "DE" },
+              metroCity: null,
+            },
+          },
+          {
+            resourceId: "res_in",
+            hoursPerDay: 8,
+            startDate: new Date("2026-01-06T00:00:00.000Z"),
+            endDate: new Date("2026-01-06T00:00:00.000Z"),
+            resource: {
+              availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+              countryId: "country_in",
+              federalState: null,
+              metroCityId: null,
+              country: { code: "IN" },
+              metroCity: null,
+            },
+          },
+        ]),
+      },
+      vacation: {
+        findMany: vi.fn().mockResolvedValue([]),
+      },
+    };
+    const ctx = createToolContext(db);
+
+    const result = await executeTool(
+      "get_shoring_ratio",
+      JSON.stringify({ projectId: "project_1" }),
+      ctx,
+    );
+
+    expect(result.content).toContain("0% onshore (DE), 100% offshore");
+    expect(result.content).toContain("IN 100% (1 people)");
+  });
+});
diff --git a/packages/api/src/__tests__/chargeability-alerts.test.ts b/packages/api/src/__tests__/chargeability-alerts.test.ts
new file mode 100644
index 0000000..ae0fef0
--- /dev/null
+++ b/packages/api/src/__tests__/chargeability-alerts.test.ts
@@ -0,0 +1,95 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+
+vi.mock("@capakraken/application", async (importOriginal) => {
+  const actual = await importOriginal<typeof import("@capakraken/application")>();
+  return {
+    ...actual,
+    isChargeabilityActualBooking: actual.isChargeabilityActualBooking,
+    listAssignmentBookings: vi.fn(),
+  };
+});
+
+import { listAssignmentBookings } from "@capakraken/application";
+import { checkChargeabilityAlerts } from "../lib/chargeability-alerts.js";
+
+describe("chargeability alerts", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+    vi.useFakeTimers();
+    vi.setSystemTime(new Date("2026-01-15T12:00:00.000Z"));
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  it("creates an alert when a regional holiday reduces booked hours below threshold", async () => {
+    const notifications: Array<{ userId: string; title: string; body?: string }> = [];
+    const db = {
+      resource: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            id: "res_1",
+            displayName: "Bruce Banner",
+            fte: 1,
+            availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+            countryId: "country_de",
+            metroCityId: null,
+            federalState: "BY",
+            chargeabilityTarget: 21,
+            country: {
+              id: "country_de",
+              code: "DE",
+              dailyWorkingHours: 8,
+              scheduleRules: null,
+            },
+            managementLevelGroup: { targetPercentage: 0.21 },
+            metroCity: null,
+          },
+        ]),
+      },
+      vacation: {
+        findMany: vi.fn().mockResolvedValue([]),
+      },
+      notification: {
+        findFirst: vi.fn().mockResolvedValue(null),
+        create: vi.fn().mockImplementation(async ({ data }) => {
+          notifications.push(data);
+          return { id: `notification_${notifications.length}`, userId: data.userId };
+        }),
+      },
+      user: {
+        findMany: vi.fn().mockResolvedValue([{ id: "manager_1" }]),
+      },
+    };
+
+    vi.mocked(listAssignmentBookings).mockResolvedValue([
+      {
+        id: "assignment_1",
+        projectId: "project_1",
+        resourceId: "res_1",
+        startDate: new Date("2026-01-05T00:00:00.000Z"),
+        endDate: new Date("2026-01-06T00:00:00.000Z"),
+        hoursPerDay: 8,
+        dailyCostCents: 0,
+        status: "CONFIRMED",
+        project: {
+          id: "project_1",
+          name: "Gamma",
+          shortCode: "GAM",
+          status: "ACTIVE",
+          orderType: "CLIENT",
+          dynamicFields: null,
+        },
+        resource: { id: "res_1", displayName: "Bruce Banner", chapter: "CGI" },
+      },
+    ]);
+
+    const alertCount = await checkChargeabilityAlerts(db);
+
+    expect(alertCount).toBe(1);
+    expect(notifications).toHaveLength(1);
+    expect(notifications[0]?.title).toContain("Bruce Banner");
+    expect(notifications[0]?.body).toContain("gap: 16pp");
+  });
+});
diff --git a/packages/api/src/__tests__/chargeability-report-router.test.ts b/packages/api/src/__tests__/chargeability-report-router.test.ts
index 12d65ab..ba1e31d 100644
--- a/packages/api/src/__tests__/chargeability-report-router.test.ts
+++ b/packages/api/src/__tests__/chargeability-report-router.test.ts
@@ -45,6 +45,10 @@ describe("chargeability report router", () => {
             eid: "E-001",
             displayName: "Alice",
             fte: 1,
+            availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+            countryId: "country_es",
+            federalState: null,
+            metroCityId: "city_1",
             chargeabilityTarget: 80,
             country: {
               id: "country_es",
@@ -143,6 +147,10 @@ describe("chargeability report router", () => {
             eid: "E-001",
             displayName: "Alice",
             fte: 1,
+            availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+            countryId: "country_es",
+            federalState: null,
+            metroCityId: "city_1",
             chargeabilityTarget: 80,
             country: {
               id: "country_es",
@@ -204,4 +212,217 @@ describe("chargeability report router", () => {
     expect(withProposed.resources[0]?.months[0]?.chg).toBeGreaterThan(0);
     expect(withProposed.groupTotals[0]?.chg).toBeGreaterThan(strict.groupTotals[0]?.chg ?? 0);
   });
+
+  it("reduces SAH for German public holidays based on the calendar", async () => {
+    const db = {
+      resource: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            id: "resource_de",
+            eid: "E-001",
+            displayName: "Alice",
+            fte: 1,
+            availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+            countryId: "country_de",
+            federalState: null,
+            metroCityId: "city_1",
+            chargeabilityTarget: 80,
+            country: {
+              id: "country_de",
+              code: "DE",
+              dailyWorkingHours: 8,
+              scheduleRules: null,
+            },
+            orgUnit: { id: "org_1", name: "CGI" },
+            managementLevelGroup: { id: "mgmt_1", name: "Senior", targetPercentage: 0.8 },
+            managementLevel: { id: "level_1", name: "L7" },
+            metroCity: { id: "city_1", name: "Munich" },
+          },
+        ]),
+      },
+      project: {
+        findMany: vi.fn().mockResolvedValue([
+          { id: "project_full_month", utilizationCategory: { code: "Chg" } },
+        ]),
+      },
+      vacation: {
+        findMany: vi.fn().mockResolvedValue([]),
+      },
+    };
+
+    vi.mocked(listAssignmentBookings).mockResolvedValue([
+      {
+        id: "assignment_full_month",
+        projectId: "project_full_month",
+        resourceId: "resource_de",
+        startDate: new Date("2026-01-01T00:00:00.000Z"),
+        endDate: new Date("2026-01-31T00:00:00.000Z"),
+        hoursPerDay: 7,
+        dailyCostCents: 0,
+        status: "CONFIRMED",
+        project: {
+          id: "project_full_month",
+          name: "Full Month Project",
+          shortCode: "FMP",
+          status: "ACTIVE",
+          orderType: "CLIENT",
+          dynamicFields: null,
+        },
+        resource: { id: "resource_de", displayName: "Alice", chapter: "CGI" },
+      },
+    ]);
+
+    const caller = createControllerCaller(db);
+    const report = await caller.getReport({
+      startMonth: "2026-01",
+      endMonth: "2026-01",
+    });
+
+    const month = report.resources[0]?.months[0];
+
+    expect(month).toBeDefined();
+    expect(month?.sah).toBe(168);
+    expect(month?.chg).toBeCloseTo(0.875, 5);
+  });
+
+  it("applies city-specific public holidays to SAH", async () => {
+    const db = {
+      resource: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            id: "resource_augsburg",
+            eid: "E-001",
+            displayName: "Alice",
+            fte: 1,
+            availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+            countryId: "country_de",
+            federalState: "BY",
+            metroCityId: "city_1",
+            chargeabilityTarget: 80,
+            country: {
+              id: "country_de",
+              code: "DE",
+              dailyWorkingHours: 8,
+              scheduleRules: null,
+            },
+            orgUnit: { id: "org_1", name: "CGI" },
+            managementLevelGroup: { id: "mgmt_1", name: "Senior", targetPercentage: 0.8 },
+            managementLevel: { id: "level_1", name: "L7" },
+            metroCity: { id: "city_1", name: "Augsburg" },
+          },
+          {
+            id: "resource_munich",
+            eid: "E-002",
+            displayName: "Bob",
+            fte: 1,
+            availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+            countryId: "country_de",
+            federalState: "BY",
+            metroCityId: "city_2",
+            chargeabilityTarget: 80,
+            country: {
+              id: "country_de",
+              code: "DE",
+              dailyWorkingHours: 8,
+              scheduleRules: null,
+            },
+            orgUnit: { id: "org_1", name: "CGI" },
+            managementLevelGroup: { id: "mgmt_1", name: "Senior", targetPercentage: 0.8 },
+            managementLevel: { id: "level_1", name: "L7" },
+            metroCity: { id: "city_2", name: "Munich" },
+          },
+        ]),
+      },
+      project: {
+        findMany: vi.fn().mockResolvedValue([]),
+      },
+      vacation: {
+        findMany: vi.fn().mockResolvedValue([]),
+      },
+    };
+
+    vi.mocked(listAssignmentBookings).mockResolvedValue([]);
+
+    const caller = createControllerCaller(db);
+    const report = await caller.getReport({
+      startMonth: "2028-08",
+      endMonth: "2028-08",
+    });
+
+    const augsburg = report.resources.find((resource) => resource.city === "Augsburg");
+    const munich = report.resources.find((resource) => resource.city === "Munich");
+
+    expect(augsburg?.months[0]?.sah).toBe((munich?.months[0]?.sah ?? 0) - 8);
+  });
+
+  it("respects individual weekday availability when computing booked hours", async () => {
+    const db = {
+      resource: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            id: "resource_pt",
+            eid: "E-003",
+            displayName: "Carla",
+            fte: 1,
+            availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 0 },
+            countryId: "country_de",
+            federalState: null,
+            metroCityId: "city_3",
+            chargeabilityTarget: 80,
+            country: {
+              id: "country_de",
+              code: "DE",
+              dailyWorkingHours: 8,
+              scheduleRules: null,
+            },
+            orgUnit: { id: "org_1", name: "CGI" },
+            managementLevelGroup: { id: "mgmt_1", name: "Senior", targetPercentage: 0.8 },
+            managementLevel: { id: "level_1", name: "L7" },
+            metroCity: { id: "city_3", name: "Berlin" },
+          },
+        ]),
+      },
+      project: {
+        findMany: vi.fn().mockResolvedValue([
+          { id: "project_week", utilizationCategory: { code: "Chg" } },
+        ]),
+      },
+      vacation: {
+        findMany: vi.fn().mockResolvedValue([]),
+      },
+    };
+
+    vi.mocked(listAssignmentBookings).mockResolvedValue([
+      {
+        id: "assignment_week",
+        projectId: "project_week",
+        resourceId: "resource_pt",
+        startDate: new Date("2026-03-02T00:00:00.000Z"),
+        endDate: new Date("2026-03-06T00:00:00.000Z"),
+        hoursPerDay: 4,
+        dailyCostCents: 0,
+        status: "CONFIRMED",
+        project: {
+          id: "project_week",
+          name: "Week Project",
+          shortCode: "WP",
+          status: "ACTIVE",
+          orderType: "CLIENT",
+          dynamicFields: null,
+        },
+        resource: { id: "resource_pt", displayName: "Carla", chapter: "CGI" },
+      },
+    ]);
+
+    const caller = createControllerCaller(db);
+    const report = await caller.getReport({
+      startMonth: "2026-03",
+      endMonth: "2026-03",
+    });
+
+    const month = report.resources[0]?.months[0];
+
+    expect(month).toBeDefined();
+    expect(month?.chg).toBeCloseTo(16 / 144, 5);
+  });
 });
diff --git a/packages/api/src/__tests__/computation-graph-router.test.ts b/packages/api/src/__tests__/computation-graph-router.test.ts
new file mode 100644
index 0000000..3e9ee0f
--- /dev/null
+++ b/packages/api/src/__tests__/computation-graph-router.test.ts
@@ -0,0 +1,195 @@
+import { SystemRole } from "@capakraken/shared";
+import { beforeEach, describe, expect, it, vi } from "vitest";
+import { computationGraphRouter } from "../router/computation-graph.js";
+import { createCallerFactory } from "../trpc.js";
+
+const createCaller = createCallerFactory(computationGraphRouter);
+
+type ResourceGraphMeta = {
+  countryCode: string | null;
+  countryName: string | null;
+  federalState: string | null;
+  metroCityName: string | null;
+  resolvedHolidays: Array<{
+    date: string;
+    name: string;
+    scope: "COUNTRY" | "STATE" | "CITY";
+    calendarName: string | null;
+  }>;
+  factors: {
+    baseAvailableHours: number;
+    effectiveAvailableHours: number;
+    publicHolidayCount: number;
+    publicHolidayWorkdayCount: number;
+    publicHolidayHoursDeduction: number;
+    absenceDayCount: number;
+    absenceHoursDeduction: number;
+  };
+};
+
+function createControllerCaller(db: Record<string, unknown>) {
+  return createCaller({
+    session: {
+      user: { email: "controller@example.com", name: "Controller", image: null },
+      expires: "2026-03-14T00:00:00.000Z",
+    },
+    db: db as never,
+    dbUser: {
+      id: "user_controller",
+      systemRole: SystemRole.CONTROLLER,
+      permissionOverrides: null,
+    },
+  });
+}
+
+function createDb(resourceFindImpl: ReturnType<typeof vi.fn>) {
+  return {
+    resource: {
+      findUniqueOrThrow: resourceFindImpl,
+    },
+    assignment: {
+      findMany: vi.fn().mockResolvedValue([]),
+    },
+    vacation: {
+      findMany: vi.fn().mockResolvedValue([]),
+    },
+    holidayCalendar: {
+      findMany: vi.fn().mockResolvedValue([]),
+    },
+    calculationRule: {
+      findMany: vi.fn().mockResolvedValue([]),
+    },
+  };
+}
+
+function buildResource(overrides: Record<string, unknown> = {}) {
+  return {
+    id: "resource_1",
+    displayName: "Bruce Banner",
+    eid: "bruce.banner",
+    fte: 1,
+    lcrCents: 5_000,
+    chargeabilityTarget: 80,
+    countryId: "country_de",
+    federalState: "BY",
+    metroCityId: null,
+    availability: {
+      monday: 8,
+      tuesday: 8,
+      wednesday: 8,
+      thursday: 8,
+      friday: 8,
+      saturday: 0,
+      sunday: 0,
+    },
+    country: {
+      id: "country_de",
+      code: "DE",
+      name: "Deutschland",
+      dailyWorkingHours: 8,
+      scheduleRules: null,
+    },
+    metroCity: null,
+    managementLevelGroup: {
+      id: "mlg_1",
+      name: "Senior",
+      targetPercentage: 0.8,
+    },
+    ...overrides,
+  };
+}
+
+describe("computation graph router", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("exposes location context and city-local holidays in the resource graph", async () => {
+    const db = createDb(vi.fn().mockResolvedValue(buildResource({
+      id: "resource_augsburg",
+      metroCityId: "city_augsburg",
+      metroCity: { id: "city_augsburg", name: "Augsburg" },
+    })));
+
+    const caller = createControllerCaller(db);
+    const result = await caller.getResourceData({
+      resourceId: "resource_augsburg",
+      month: "2026-08",
+    });
+    const meta = result.meta as ResourceGraphMeta;
+    const nodeIds = result.nodes.map((node) => node.id);
+    const holidayExamples = result.nodes.find((node) => node.id === "input.holidayExamples");
+
+    expect(new Set(nodeIds).size).toBe(nodeIds.length);
+    expect(nodeIds).toEqual(expect.arrayContaining([
+      "input.country",
+      "input.state",
+      "input.city",
+      "input.holidayContext",
+      "input.holidayExamples",
+      "sah.baseHours",
+      "sah.publicHolidayHours",
+      "sah.absenceHours",
+    ]));
+    expect(meta).toMatchObject({
+      countryCode: "DE",
+      countryName: "Deutschland",
+      federalState: "BY",
+      metroCityName: "Augsburg",
+    });
+    expect(meta.resolvedHolidays).toEqual(expect.arrayContaining([
+      expect.objectContaining({
+        date: "2026-08-08",
+        name: "Augsburger Friedensfest",
+        scope: "CITY",
+      }),
+    ]));
+    expect(meta.factors.publicHolidayCount).toBeGreaterThan(0);
+    expect(meta.factors.publicHolidayWorkdayCount).toBe(0);
+    expect(holidayExamples?.value).toEqual(expect.stringContaining("Augsburger Friedensfest"));
+  });
+
+  it("derives different effective SAH values for Bavaria and Hamburg", async () => {
+    const db = createDb(vi.fn()
+      .mockResolvedValueOnce(buildResource({
+        id: "resource_by",
+        federalState: "BY",
+        managementLevelGroup: null,
+      }))
+      .mockResolvedValueOnce(buildResource({
+        id: "resource_hh",
+        federalState: "HH",
+        managementLevelGroup: null,
+      })));
+
+    const caller = createControllerCaller(db);
+    const bavaria = await caller.getResourceData({
+      resourceId: "resource_by",
+      month: "2026-01",
+    });
+    const hamburg = await caller.getResourceData({
+      resourceId: "resource_hh",
+      month: "2026-01",
+    });
+
+    const bavariaMeta = bavaria.meta as ResourceGraphMeta;
+    const hamburgMeta = hamburg.meta as ResourceGraphMeta;
+
+    expect(bavariaMeta.federalState).toBe("BY");
+    expect(hamburgMeta.federalState).toBe("HH");
+    expect(bavariaMeta.factors.baseAvailableHours).toBe(176);
+    expect(hamburgMeta.factors.baseAvailableHours).toBe(176);
+    expect(bavariaMeta.factors.effectiveAvailableHours).toBe(160);
+    expect(hamburgMeta.factors.effectiveAvailableHours).toBe(168);
+    expect(bavariaMeta.factors.publicHolidayWorkdayCount).toBe(2);
+    expect(hamburgMeta.factors.publicHolidayWorkdayCount).toBe(1);
+    expect(bavariaMeta.factors.publicHolidayHoursDeduction).toBe(16);
+    expect(hamburgMeta.factors.publicHolidayHoursDeduction).toBe(8);
+    expect(bavariaMeta.resolvedHolidays).toEqual(expect.arrayContaining([
+      expect.objectContaining({ name: "Heilige Drei Könige", date: "2026-01-06", scope: "STATE" }),
+    ]));
+    expect(hamburgMeta.resolvedHolidays).not.toEqual(expect.arrayContaining([
+      expect.objectContaining({ name: "Heilige Drei Könige", date: "2026-01-06" }),
+    ]));
+  });
+});
diff --git a/packages/api/src/__tests__/dashboard-router.test.ts b/packages/api/src/__tests__/dashboard-router.test.ts
index dd38410..e50f90f 100644
--- a/packages/api/src/__tests__/dashboard-router.test.ts
+++ b/packages/api/src/__tests__/dashboard-router.test.ts
@@ -10,6 +10,7 @@ vi.mock("@capakraken/application", async (importOriginal) => {
     getDashboardDemand: vi.fn(),
     getDashboardTopValueResources: vi.fn(),
     getDashboardChargeabilityOverview: vi.fn(),
+    getDashboardBudgetForecast: vi.fn(),
   };
 });
 
@@ -29,6 +30,7 @@ import {
   getDashboardDemand,
   getDashboardTopValueResources,
   getDashboardChargeabilityOverview,
+  getDashboardBudgetForecast,
 } from "@capakraken/application";
 import { dashboardRouter } from "../router/dashboard.js";
 import { createCallerFactory } from "../trpc.js";
@@ -302,4 +304,52 @@ describe("dashboard router", () => {
       );
     });
   });
+
+  describe("getBudgetForecast", () => {
+    it("returns budget forecast rows with calendar location context", async () => {
+      vi.mocked(getDashboardBudgetForecast).mockResolvedValue([
+        {
+          projectId: "project_1",
+          projectName: "Alpha",
+          shortCode: "ALPHA",
+          clientId: "client_1",
+          clientName: "Client One",
+          budgetCents: 100_000,
+          spentCents: 40_000,
+          remainingCents: 60_000,
+          burnRate: 10_000,
+          estimatedExhaustionDate: "2026-06-30",
+          pctUsed: 40,
+          activeAssignmentCount: 2,
+          calendarLocations: [
+            {
+              countryCode: "DE",
+              countryName: "Germany",
+              federalState: "BY",
+              metroCityName: "Munich",
+              activeAssignmentCount: 2,
+              burnRateCents: 10_000,
+            },
+          ],
+        },
+      ]);
+
+      const caller = createProtectedCaller({});
+      const result = await caller.getBudgetForecast();
+
+      expect(result).toHaveLength(1);
+      expect(result[0]).toMatchObject({
+        projectName: "Alpha",
+        activeAssignmentCount: 2,
+        calendarLocations: [
+          expect.objectContaining({
+            countryCode: "DE",
+            federalState: "BY",
+            metroCityName: "Munich",
+          }),
+        ],
+      });
+      expect(getDashboardBudgetForecast).toHaveBeenCalledTimes(1);
+    });
+  });
 });
diff --git a/packages/api/src/__tests__/effort-rule-router.test.ts b/packages/api/src/__tests__/effort-rule-router.test.ts
index 120d262..35d730f 100644
--- a/packages/api/src/__tests__/effort-rule-router.test.ts
+++ b/packages/api/src/__tests__/effort-rule-router.test.ts
@@ -150,6 +150,7 @@ describe("effortRule.create", () => {
         updateMany: vi.fn().mockResolvedValue({ count: 0 }),
         create: vi.fn().mockResolvedValue(created),
       },
+      auditLog: { create: vi.fn().mockResolvedValue({}) },
     };
 
     const caller = createManagerCaller(db);
@@ -180,6 +181,7 @@ describe("effortRule.create", () => {
         updateMany: vi.fn().mockResolvedValue({ count: 1 }),
         create: vi.fn().mockResolvedValue(created),
       },
+      auditLog: { create: vi.fn().mockResolvedValue({}) },
     };
 
     const caller = createManagerCaller(db);
@@ -212,6 +214,7 @@ describe("effortRule.update", () => {
         deleteMany: vi.fn(),
         createMany: vi.fn(),
       },
+      auditLog: { create: vi.fn().mockResolvedValue({}) },
     };
 
     const caller = createManagerCaller(db);
@@ -236,6 +239,7 @@ describe("effortRule.update", () => {
         deleteMany: vi.fn().mockResolvedValue({ count: 1 }),
         createMany: vi.fn().mockResolvedValue({ count: 2 }),
       },
+      auditLog: { create: vi.fn().mockResolvedValue({}) },
     };
 
     const caller = createManagerCaller(db);
@@ -281,6 +285,7 @@ describe("effortRule.delete", () => {
         findUnique: vi.fn().mockResolvedValue(existing),
         delete: vi.fn().mockResolvedValue(existing),
       },
+      auditLog: { create: vi.fn().mockResolvedValue({}) },
     };
 
     const caller = createManagerCaller(db);
diff --git a/packages/api/src/__tests__/entitlement-router.test.ts b/packages/api/src/__tests__/entitlement-router.test.ts
index 7600c39..d97b482 100644
--- a/packages/api/src/__tests__/entitlement-router.test.ts
+++ b/packages/api/src/__tests__/entitlement-router.test.ts
@@ -16,7 +16,17 @@ const createCaller = createCallerFactory(entitlementRouter);
 /** Injects a default resource ownership mock so the ownership check in getBalance passes */
 function createProtectedCaller(db: Record<string, unknown>) {
   const withResourceOwnership = {
-    resource: { findUnique: vi.fn().mockResolvedValue({ userId: "user_1" }) },
+    resource: {
+      findUnique: vi.fn().mockImplementation(async (args?: { select?: Record<string, unknown> }) => {
+        const select = args?.select ?? {};
+        return {
+          ...(select.userId ? { userId: "user_1" } : {}),
+          ...(select.federalState ? { federalState: "BY" } : {}),
+          ...(select.country ? { country: { code: "DE" } } : {}),
+          ...(select.metroCity ? { metroCity: null } : {}),
+        };
+      }),
+    },
     ...db,
   };
   return createCaller({
@@ -80,6 +90,14 @@ function sampleEntitlement(overrides: Record<string, unknown> = {}) {
   };
 }
 
+function mockEntitlementFindUniqueByYear(
+  entitlementsByYear: Record<number, ReturnType<typeof sampleEntitlement> | null>,
+) {
+  return vi.fn().mockImplementation(async ({ where }: { where: { resourceId_year: { year: number } } }) => (
+    entitlementsByYear[where.resourceId_year.year] ?? null
+  ));
+}
+
 // ─── getBalance ──────────────────────────────────────────────────────────────
 
 describe("entitlement.getBalance", () => {
@@ -90,7 +108,7 @@ describe("entitlement.getBalance", () => {
         findUnique: vi.fn().mockResolvedValue({ id: "singleton", vacationDefaultDays: 28 }),
       },
       vacationEntitlement: {
-        findUnique: vi.fn().mockResolvedValue(entitlement),
+        findUnique: mockEntitlementFindUniqueByYear({ 2026: entitlement }),
         update: vi.fn().mockResolvedValue(entitlement),
       },
       vacation: {
@@ -129,10 +147,9 @@ describe("entitlement.getBalance", () => {
         findUnique: vi.fn().mockResolvedValue({ id: "singleton", vacationDefaultDays: 28 }),
       },
       vacationEntitlement: {
-        findUnique: vi
-          .fn()
-          .mockResolvedValueOnce(null) // current year not found
-          .mockResolvedValueOnce(prevEntitlement), // previous year found
+        findUnique: mockEntitlementFindUniqueByYear({
+          2025: prevEntitlement,
+        }),
         create: vi.fn().mockResolvedValue(createdEntitlement),
         update: vi.fn().mockResolvedValue(createdEntitlement),
       },
@@ -164,7 +181,7 @@ describe("entitlement.getBalance", () => {
         findUnique: vi.fn().mockResolvedValue(null),
       },
       vacationEntitlement: {
-        findUnique: vi.fn().mockResolvedValue(entitlement),
+        findUnique: mockEntitlementFindUniqueByYear({ 2026: entitlement }),
         update: vi.fn().mockResolvedValue(entitlement),
       },
       vacation: {
@@ -185,12 +202,14 @@ describe("entitlement.getBalance", () => {
         findUnique: vi.fn().mockResolvedValue(null),
       },
       vacationEntitlement: {
-        findUnique: vi.fn().mockResolvedValue(entitlement),
+        findUnique: mockEntitlementFindUniqueByYear({ 2026: entitlement }),
         update: vi.fn().mockResolvedValue(entitlement),
       },
       vacation: {
         findMany: vi
           .fn()
+          // Public holiday vacations for holiday context
+          .mockResolvedValueOnce([])
           // First call: balance-type vacations (for syncEntitlement)
           .mockResolvedValueOnce([])
           // Second call: sick days
@@ -209,19 +228,169 @@ describe("entitlement.getBalance", () => {
 
     expect(result.sickDays).toBe(3);
   });
+
+  it("does not deduct city-specific public holidays from leave balance", async () => {
+    const entitlement = sampleEntitlement({ usedDays: 0, pendingDays: 0, entitledDays: 30, carryoverDays: 0 });
+    const db = {
+      systemSettings: {
+        findUnique: vi.fn().mockResolvedValue(null),
+      },
+      resource: {
+        findUnique: vi.fn().mockResolvedValue({
+          userId: "user_1",
+          federalState: "BY",
+          country: { code: "DE" },
+          metroCity: { name: "Augsburg" },
+        }),
+      },
+      vacationEntitlement: {
+        findUnique: mockEntitlementFindUniqueByYear({ 2028: entitlement }),
+        update: vi.fn().mockImplementation(async ({ data }) => ({
+          ...entitlement,
+          ...data,
+        })),
+      },
+      vacation: {
+        findMany: vi
+          .fn()
+          .mockResolvedValueOnce([])
+          .mockResolvedValueOnce([
+            {
+              startDate: new Date("2028-08-08T00:00:00.000Z"),
+              endDate: new Date("2028-08-08T00:00:00.000Z"),
+              status: "APPROVED",
+              isHalfDay: false,
+            },
+          ])
+          .mockResolvedValueOnce([])
+          .mockResolvedValueOnce([]),
+      },
+    };
+
+    const caller = createProtectedCaller(db);
+    const result = await caller.getBalance({ resourceId: "res_1", year: 2028 });
+
+    expect(result.usedDays).toBe(0);
+    expect(result.remainingDays).toBe(30);
+  });
+
+  it("recomputes carryover from the previous year when the next year already exists", async () => {
+    const entitlements = new Map([
+      [2025, sampleEntitlement({
+        id: "ent_2025",
+        year: 2025,
+        entitledDays: 28,
+        carryoverDays: 0,
+        usedDays: 8,
+        pendingDays: 0,
+      })],
+      [2026, sampleEntitlement({
+        id: "ent_2026",
+        year: 2026,
+        entitledDays: 28,
+        carryoverDays: 0,
+        usedDays: 0,
+        pendingDays: 0,
+      })],
+    ]);
+    const db = {
+      systemSettings: {
+        findUnique: vi.fn().mockResolvedValue({ id: "singleton", vacationDefaultDays: 28 }),
+      },
+      resource: {
+        findUnique: vi.fn().mockResolvedValue({
+          userId: "user_1",
+          federalState: "BY",
+          countryId: "country_de",
+          metroCityId: null,
+          country: { code: "DE" },
+          metroCity: null,
+        }),
+      },
+      holidayCalendar: {
+        findMany: vi.fn().mockResolvedValue([]),
+      },
+      vacationEntitlement: {
+        findUnique: vi.fn().mockImplementation(async ({ where }: { where: { resourceId_year: { year: number } } }) => (
+          entitlements.get(where.resourceId_year.year) ?? null
+        )),
+        create: vi.fn(),
+        update: vi.fn().mockImplementation(async ({ where, data }: {
+          where: { id: string };
+          data: Record<string, number>;
+        }) => {
+          const current = [...entitlements.values()].find((entry) => entry.id === where.id);
+          if (!current) {
+            throw new Error(`Unknown entitlement ${where.id}`);
+          }
+          const updated = { ...current, ...data };
+          entitlements.set(updated.year, updated);
+          return updated;
+        }),
+      },
+      vacation: {
+        findMany: vi
+          .fn()
+          // 2025 holiday context
+          .mockResolvedValueOnce([])
+          // 2025 balance vacations
+          .mockResolvedValueOnce([
+            {
+              startDate: new Date("2025-06-10T00:00:00.000Z"),
+              endDate: new Date("2025-06-17T00:00:00.000Z"),
+              status: "APPROVED",
+              isHalfDay: false,
+            },
+          ])
+          // 2026 holiday context
+          .mockResolvedValueOnce([])
+          // 2026 balance vacations
+          .mockResolvedValueOnce([])
+          // 2026 sick days
+          .mockResolvedValueOnce([]),
+      },
+    };
+
+    const caller = createProtectedCaller(db);
+    const result = await caller.getBalance({ resourceId: "res_1", year: 2026 });
+
+    expect(result.carryoverDays).toBe(20);
+    expect(result.entitledDays).toBe(48);
+    expect(db.vacationEntitlement.update).toHaveBeenCalledWith(
+      expect.objectContaining({
+        where: { id: "ent_2026" },
+        data: expect.objectContaining({
+          carryoverDays: 20,
+          entitledDays: 48,
+        }),
+      }),
+    );
+  });
 });
 
 // ─── get ─────────────────────────────────────────────────────────────────────
 
 describe("entitlement.get", () => {
   it("returns existing entitlement (manager role)", async () => {
-    const entitlement = sampleEntitlement();
+    const entitlement = sampleEntitlement({
+      entitledDays: 30,
+      carryoverDays: 0,
+      usedDays: 0,
+      pendingDays: 0,
+    });
     const db = {
       systemSettings: {
-        findUnique: vi.fn().mockResolvedValue(null),
+        findUnique: vi.fn().mockResolvedValue({ id: "singleton", vacationDefaultDays: 30 }),
       },
       vacationEntitlement: {
-        findUnique: vi.fn().mockResolvedValue(entitlement),
+        findUnique: mockEntitlementFindUniqueByYear({ 2026: entitlement }),
+        update: vi.fn().mockImplementation(async ({ data }: { data: Record<string, number> }) => ({
+          ...entitlement,
+          ...data,
+        })),
+      },
+      vacation: {
+        findMany: vi.fn().mockResolvedValue([]),
       },
     };
 
@@ -259,6 +428,7 @@ describe("entitlement.set", () => {
         update: vi.fn().mockResolvedValue(updated),
         create: vi.fn(),
       },
+      auditLog: { create: vi.fn().mockResolvedValue({}) },
     };
 
     const caller = createManagerCaller(db);
@@ -286,6 +456,7 @@ describe("entitlement.set", () => {
         update: vi.fn(),
         create: vi.fn().mockResolvedValue(created),
       },
+      auditLog: { create: vi.fn().mockResolvedValue({}) },
     };
 
     const caller = createManagerCaller(db);
@@ -324,6 +495,7 @@ describe("entitlement.bulkSet", () => {
       vacationEntitlement: {
         upsert: vi.fn().mockResolvedValue(sampleEntitlement()),
       },
+      auditLog: { create: vi.fn().mockResolvedValue({}) },
     };
 
     const caller = createAdminCaller(db);
@@ -350,6 +522,7 @@ describe("entitlement.bulkSet", () => {
       vacationEntitlement: {
         upsert: vi.fn().mockResolvedValue(sampleEntitlement()),
       },
+      auditLog: { create: vi.fn().mockResolvedValue({}) },
     };
 
     const caller = createAdminCaller(db);
@@ -396,10 +569,15 @@ describe("entitlement.getYearSummary", () => {
         findUnique: vi.fn().mockResolvedValue({ id: "singleton", vacationDefaultDays: 28 }),
       },
       resource: {
+        findUnique: vi.fn().mockResolvedValue({
+          federalState: "BY",
+          country: { code: "DE" },
+          metroCity: null,
+        }),
         findMany: vi.fn().mockResolvedValue(resources),
       },
       vacationEntitlement: {
-        findUnique: vi.fn().mockResolvedValue(entitlement),
+        findUnique: mockEntitlementFindUniqueByYear({ 2026: entitlement }),
         update: vi.fn().mockResolvedValue(entitlement),
       },
       vacation: {
diff --git a/packages/api/src/__tests__/event-bus-debounce.test.ts b/packages/api/src/__tests__/event-bus-debounce.test.ts
index daf1e9f..16a122c 100644
--- a/packages/api/src/__tests__/event-bus-debounce.test.ts
+++ b/packages/api/src/__tests__/event-bus-debounce.test.ts
@@ -24,10 +24,12 @@ vi.mock("ioredis", () => {
 describe("event-bus debounce", () => {
   let received: SseEvent[];
   let unsubscribe: () => void;
+  let consoleWarnSpy: ReturnType<typeof vi.spyOn>;
 
   beforeEach(() => {
     vi.useFakeTimers();
     received = [];
+    consoleWarnSpy = vi.spyOn(console, "warn").mockImplementation(() => undefined);
     unsubscribe = eventBus.subscribe((event) => {
       received.push(event);
     });
@@ -36,6 +38,7 @@ describe("event-bus debounce", () => {
   afterEach(() => {
     unsubscribe();
     cancelPendingEvents();
+    consoleWarnSpy.mockRestore();
     vi.useRealTimers();
   });
 
diff --git a/packages/api/src/__tests__/experience-multiplier-router.test.ts b/packages/api/src/__tests__/experience-multiplier-router.test.ts
index a26aa73..e362114 100644
--- a/packages/api/src/__tests__/experience-multiplier-router.test.ts
+++ b/packages/api/src/__tests__/experience-multiplier-router.test.ts
@@ -174,6 +174,7 @@ describe("experienceMultiplier.create", () => {
         updateMany: vi.fn().mockResolvedValue({ count: 0 }),
         create: vi.fn().mockResolvedValue(created),
       },
+      auditLog: { create: vi.fn().mockResolvedValue({}) },
     };
 
     const caller = createManagerCaller(db);
@@ -203,6 +204,7 @@ describe("experienceMultiplier.create", () => {
         updateMany: vi.fn().mockResolvedValue({ count: 1 }),
         create: vi.fn().mockResolvedValue(created),
       },
+      auditLog: { create: vi.fn().mockResolvedValue({}) },
     };
 
     const caller = createManagerCaller(db);
@@ -235,6 +237,7 @@ describe("experienceMultiplier.update", () => {
         deleteMany: vi.fn(),
         createMany: vi.fn(),
       },
+      auditLog: { create: vi.fn().mockResolvedValue({}) },
     };
 
     const caller = createManagerCaller(db);
@@ -259,6 +262,7 @@ describe("experienceMultiplier.update", () => {
         deleteMany: vi.fn().mockResolvedValue({ count: 1 }),
         createMany: vi.fn().mockResolvedValue({ count: 2 }),
       },
+      auditLog: { create: vi.fn().mockResolvedValue({}) },
     };
 
     const caller = createManagerCaller(db);
@@ -308,6 +312,7 @@ describe("experienceMultiplier.delete", () => {
         findUnique: vi.fn().mockResolvedValue(existing),
         delete: vi.fn().mockResolvedValue(existing),
       },
+      auditLog: { create: vi.fn().mockResolvedValue({}) },
     };
 
     const caller = createManagerCaller(db);
diff --git a/packages/api/src/__tests__/holiday-calendar-router.test.ts b/packages/api/src/__tests__/holiday-calendar-router.test.ts
new file mode 100644
index 0000000..7da141c
--- /dev/null
+++ b/packages/api/src/__tests__/holiday-calendar-router.test.ts
@@ -0,0 +1,168 @@
+import { SystemRole } from "@capakraken/shared";
+import { describe, expect, it, vi } from "vitest";
+import { createCallerFactory } from "../trpc.js";
+import { holidayCalendarRouter } from "../router/holiday-calendar.js";
+
+vi.mock("../lib/audit.js", () => ({
+  createAuditEntry: vi.fn().mockResolvedValue(undefined),
+}));
+
+const createCaller = createCallerFactory(holidayCalendarRouter);
+
+function createProtectedCaller(db: Record<string, unknown>) {
+  return createCaller({
+    session: {
+      user: { email: "user@example.com", name: "User", image: null },
+      expires: "2026-12-31T00:00:00.000Z",
+    },
+    db: db as never,
+    dbUser: {
+      id: "user_1",
+      systemRole: SystemRole.USER,
+      permissionOverrides: null,
+    },
+  });
+}
+
+function createAdminCaller(db: Record<string, unknown>) {
+  return createCaller({
+    session: {
+      user: { email: "admin@example.com", name: "Admin", image: null },
+      expires: "2026-12-31T00:00:00.000Z",
+    },
+    db: db as never,
+    dbUser: {
+      id: "admin_1",
+      systemRole: SystemRole.ADMIN,
+      permissionOverrides: null,
+    },
+  });
+}
+
+describe("holiday calendar router", () => {
+  it("merges built-in and scoped custom holidays in preview", async () => {
+    const db = {
+      country: {
+        findUnique: vi.fn().mockResolvedValue({ code: "DE" }),
+      },
+      metroCity: {
+        findUnique: vi.fn().mockResolvedValue({ name: "Augsburg" }),
+      },
+      holidayCalendar: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            id: "cal_city",
+            name: "Augsburg lokal",
+            scopeType: "CITY",
+            priority: 10,
+            createdAt: new Date("2026-01-01T00:00:00.000Z"),
+            entries: [
+              {
+                date: new Date("2020-01-01T00:00:00.000Z"),
+                name: "Augsburg Neujahr",
+                isRecurringAnnual: true,
+              },
+              {
+                date: new Date("2020-08-08T00:00:00.000Z"),
+                name: "Friedensfest lokal",
+                isRecurringAnnual: true,
+              },
+            ],
+          },
+        ]),
+      },
+    };
+
+    const caller = createProtectedCaller(db);
+    const result = await caller.previewResolvedHolidays({
+      countryId: "country_de",
+      metroCityId: "city_augsburg",
+      year: 2026,
+    });
+
+    expect(db.holidayCalendar.findMany).toHaveBeenCalledWith(
+      expect.objectContaining({
+        where: expect.objectContaining({
+          countryId: "country_de",
+          isActive: true,
+        }),
+      }),
+    );
+    expect(result).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({
+          date: "2026-01-01",
+          name: "Augsburg Neujahr",
+          scopeType: "CITY",
+          calendarName: "Augsburg lokal",
+        }),
+        expect.objectContaining({
+          date: "2026-08-08",
+          name: "Friedensfest lokal",
+          scopeType: "CITY",
+          calendarName: "Augsburg lokal",
+        }),
+      ]),
+    );
+  });
+
+  it("rejects duplicate calendar scopes on create", async () => {
+    const db = {
+      country: {
+        findUnique: vi
+          .fn()
+          .mockResolvedValueOnce({ id: "country_de", name: "Deutschland" })
+          .mockResolvedValueOnce({ id: "country_de", name: "Deutschland" }),
+      },
+      metroCity: {
+        findUnique: vi.fn(),
+      },
+      holidayCalendar: {
+        findFirst: vi.fn().mockResolvedValue({ id: "existing_scope" }),
+        create: vi.fn(),
+      },
+      auditLog: {
+        create: vi.fn().mockResolvedValue({}),
+      },
+    };
+
+    const caller = createAdminCaller(db);
+
+    await expect(caller.createCalendar({
+      name: "Deutschland Standard",
+      scopeType: "COUNTRY",
+      countryId: "country_de",
+      priority: 0,
+      isActive: true,
+    })).rejects.toThrow("A holiday calendar for this exact scope already exists");
+
+    expect(db.holidayCalendar.create).not.toHaveBeenCalled();
+  });
+
+  it("rejects duplicate entry dates within the same calendar", async () => {
+    const db = {
+      holidayCalendar: {
+        findUnique: vi.fn().mockResolvedValue({ id: "cal_1", name: "Deutschland Standard" }),
+      },
+      holidayCalendarEntry: {
+        findFirst: vi.fn().mockResolvedValue({ id: "entry_existing" }),
+        create: vi.fn(),
+      },
+      auditLog: {
+        create: vi.fn().mockResolvedValue({}),
+      },
+    };
+
+    const caller = createAdminCaller(db);
+
+    await expect(caller.createEntry({
+      holidayCalendarId: "cal_1",
+      date: new Date("2026-12-24T00:00:00.000Z"),
+      name: "Heiligabend lokal",
+      isRecurringAnnual: true,
+      source: "manual",
+    })).rejects.toThrow("A holiday entry for this calendar and date already exists");
+
+    expect(db.holidayCalendarEntry.create).not.toHaveBeenCalled();
+  });
+});
diff --git a/packages/api/src/__tests__/notification-router.test.ts b/packages/api/src/__tests__/notification-router.test.ts
index f8bbe0b..3452153 100644
--- a/packages/api/src/__tests__/notification-router.test.ts
+++ b/packages/api/src/__tests__/notification-router.test.ts
@@ -187,6 +187,7 @@ describe("notification.create", () => {
       {
         notification: {
           create: vi.fn().mockResolvedValue(created),
+          findUnique: vi.fn().mockResolvedValue(created),
         },
       },
       "user_mgr",
@@ -209,6 +210,7 @@ describe("notification.create", () => {
         }),
       }),
     );
+    expect(db.notification.findUnique).toHaveBeenCalledWith({ where: { id: "notif_1" } });
   });
 
   it("creates a notification with optional fields", async () => {
@@ -222,6 +224,7 @@ describe("notification.create", () => {
       {
         notification: {
           create: vi.fn().mockResolvedValue(created),
+          findUnique: vi.fn().mockResolvedValue(created),
         },
       },
       "user_mgr",
diff --git a/packages/api/src/__tests__/project-router.test.ts b/packages/api/src/__tests__/project-router.test.ts
index 6c762a5..fb334a8 100644
--- a/packages/api/src/__tests__/project-router.test.ts
+++ b/packages/api/src/__tests__/project-router.test.ts
@@ -134,12 +134,14 @@ describe("project router", () => {
           create: vi.fn().mockResolvedValue(created),
         },
         auditLog: { create: vi.fn().mockResolvedValue({}) },
+        webhook: { findMany: vi.fn().mockResolvedValue([]) },
       };
 
       const caller = createManagerCaller(db);
       const result = await caller.create({
         shortCode: "PRJ-001",
         name: "Test Project",
+        responsiblePerson: "Alice",
         orderType: OrderType.CHARGEABLE,
         allocationType: AllocationType.INT,
         winProbability: 80,
@@ -167,6 +169,7 @@ describe("project router", () => {
         caller.create({
           shortCode: "PRJ-001",
           name: "Duplicate",
+          responsiblePerson: "Alice",
           orderType: OrderType.CHARGEABLE,
           allocationType: AllocationType.INT,
           budgetCents: 100_00,
@@ -189,6 +192,7 @@ describe("project router", () => {
         caller.create({
           shortCode: "PRJ-002",
           name: "Blocked",
+          responsiblePerson: "Alice",
           orderType: OrderType.CHARGEABLE,
           allocationType: AllocationType.INT,
           budgetCents: 100_00,
@@ -239,6 +243,64 @@ describe("project router", () => {
     });
   });
 
+  describe("getShoringRatio", () => {
+    it("excludes regional holidays from shoring weighting", async () => {
+      const db = {
+        project: {
+          findUnique: vi.fn().mockResolvedValue({
+            id: "project_1",
+            name: "Test Project",
+            shoringThreshold: 55,
+            onshoreCountryCode: "DE",
+          }),
+        },
+        assignment: {
+          findMany: vi.fn().mockResolvedValue([
+            {
+              id: "a1",
+              resourceId: "res_de",
+              startDate: new Date("2026-01-05T00:00:00.000Z"),
+              endDate: new Date("2026-01-06T00:00:00.000Z"),
+              hoursPerDay: 8,
+              resource: {
+                id: "res_de",
+                countryId: "country_de",
+                federalState: "BY",
+                metroCityId: null,
+                availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8, saturday: 0, sunday: 0 },
+                country: { id: "country_de", code: "DE" },
+                metroCity: null,
+              },
+            },
+            {
+              id: "a2",
+              resourceId: "res_es",
+              startDate: new Date("2026-01-05T00:00:00.000Z"),
+              endDate: new Date("2026-01-06T00:00:00.000Z"),
+              hoursPerDay: 8,
+              resource: {
+                id: "res_es",
+                countryId: "country_es",
+                federalState: null,
+                metroCityId: null,
+                availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8, saturday: 0, sunday: 0 },
+                country: { id: "country_es", code: "ES" },
+                metroCity: null,
+              },
+            },
+          ]),
+        },
+      };
+
+      const caller = createProtectedCaller(db);
+      const result = await caller.getShoringRatio({ projectId: "project_1" });
+
+      expect(result.totalHours).toBe(24);
+      expect(result.onshoreRatio).toBe(33);
+      expect(result.offshoreRatio).toBe(67);
+    });
+  });
+
   // ─── update ───────────────────────────────────────────────────────────────
 
   describe("update", () => {
@@ -294,6 +356,7 @@ describe("project router", () => {
         project: {
           update: vi.fn().mockResolvedValue(updated),
         },
+        webhook: { findMany: vi.fn().mockResolvedValue([]) },
       };
 
       const caller = createManagerCaller(db);
diff --git a/packages/api/src/__tests__/report-router.test.ts b/packages/api/src/__tests__/report-router.test.ts
new file mode 100644
index 0000000..2390a87
--- /dev/null
+++ b/packages/api/src/__tests__/report-router.test.ts
@@ -0,0 +1,118 @@
+import { SystemRole } from "@capakraken/shared";
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+vi.mock("@capakraken/application", () => ({
+  isChargeabilityActualBooking: vi.fn(() => false),
+  isChargeabilityRelevantProject: vi.fn(() => false),
+  listAssignmentBookings: vi.fn().mockResolvedValue([]),
+}));
+
+vi.mock("../lib/resource-capacity.js", () => ({
+  calculateEffectiveAvailableHours: vi.fn(({ context }: { context?: unknown }) => (context ? 156 : 168)),
+  calculateEffectiveBookedHours: vi.fn(() => 0),
+  countEffectiveWorkingDays: vi.fn(({ context }: { context?: unknown }) => (context ? 19.5 : 21)),
+  getAvailabilityHoursForDate: vi.fn(() => 8),
+  loadResourceDailyAvailabilityContexts: vi.fn().mockResolvedValue(new Map([
+    [
+      "res_1",
+      {
+        holidayDates: new Set(["2026-04-10"]),
+        vacationFractionsByDate: new Map([["2026-04-14", 0.5]]),
+      },
+    ],
+  ])),
+}));
+
+import { reportRouter } from "../router/report.js";
+import { createCallerFactory } from "../trpc.js";
+
+const createCaller = createCallerFactory(reportRouter);
+
+function createControllerCaller(db: Record<string, unknown>) {
+  return createCaller({
+    session: {
+      user: { email: "controller@example.com", name: "Controller", image: null },
+      expires: "2099-01-01T00:00:00.000Z",
+    },
+    db: db as never,
+    dbUser: {
+      id: "user_controller",
+      systemRole: SystemRole.CONTROLLER,
+      permissionOverrides: null,
+    },
+  });
+}
+
+describe("report router", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("lists the new resource month transparency columns", async () => {
+    const caller = createControllerCaller({});
+    const columns = await caller.getAvailableColumns({ entity: "resource_month" });
+
+    expect(columns).toEqual(expect.arrayContaining([
+      expect.objectContaining({ key: "monthlyPublicHolidayCount", label: "Holiday Dates" }),
+      expect.objectContaining({ key: "monthlyTargetHours", label: "Target Hours" }),
+      expect.objectContaining({ key: "monthlyUnassignedHours", label: "Unassigned Hours" }),
+    ]));
+  });
+
+  it("exports resource month basis and computed columns in CSV", async () => {
+    const db = {
+      resource: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            id: "res_1",
+            eid: "alice",
+            displayName: "Alice",
+            email: "alice@example.com",
+            chapter: "VFX",
+            resourceType: "EMPLOYEE",
+            isActive: true,
+            chgResponsibility: false,
+            rolledOff: false,
+            departed: false,
+            lcrCents: 7500,
+            ucrCents: 10000,
+            currency: "EUR",
+            fte: 1,
+            availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+            chargeabilityTarget: 80,
+            federalState: "BY",
+            countryId: "country_de",
+            metroCityId: null,
+            country: { code: "DE", name: "Germany" },
+            metroCity: null,
+            orgUnit: { name: "Delivery" },
+            managementLevelGroup: null,
+            managementLevel: { name: "Senior" },
+          },
+        ]),
+      },
+    };
+
+    const caller = createControllerCaller(db);
+    const result = await caller.exportReport({
+      entity: "resource_month",
+      columns: [
+        "displayName",
+        "countryCode",
+        "monthlyPublicHolidayCount",
+        "monthlyPublicHolidayHoursDeduction",
+        "monthlyAbsenceHoursDeduction",
+        "monthlySahHours",
+        "monthlyTargetHours",
+        "monthlyUnassignedHours",
+      ],
+      filters: [],
+      periodMonth: "2026-04",
+      limit: 100,
+    });
+
+    expect(result.rowCount).toBe(1);
+    expect(result.csv).toContain("Name,Country Code,Holiday Dates,Holiday Hours Deduction,Absence Hours Deduction,SAH,Target Hours,Unassigned Hours");
+    expect(result.csv).toContain("Alice,DE,1,8,4,156,124.8,156");
+  });
+});
diff --git a/packages/api/src/__tests__/resource-router.test.ts b/packages/api/src/__tests__/resource-router.test.ts
index 48de273..d7d84b3 100644
--- a/packages/api/src/__tests__/resource-router.test.ts
+++ b/packages/api/src/__tests__/resource-router.test.ts
@@ -86,6 +86,10 @@ describe("resource router", () => {
       valueScoreBreakdown: null,
       valueScoreUpdatedAt: null,
       userId: null,
+      countryId: "country_de",
+      metroCityId: null,
+      country: { code: "DE" },
+      metroCity: null,
     };
     const db = {
       resource: {
@@ -158,6 +162,165 @@ describe("resource router", () => {
     });
   });
 
+  it("calculates utilization with regional holidays removed from available hours", async () => {
+    const resource = {
+      id: "resource_1",
+      eid: "E-001",
+      displayName: "Alice",
+      email: "alice@example.com",
+      chapter: "CGI",
+      lcrCents: 5000,
+      ucrCents: 9000,
+      currency: "EUR",
+      chargeabilityTarget: 80,
+      availability: {
+        monday: 8,
+        tuesday: 8,
+        wednesday: 8,
+        thursday: 8,
+        friday: 8,
+        saturday: 0,
+        sunday: 0,
+      },
+      skills: [],
+      dynamicFields: {},
+      blueprintId: null,
+      isActive: true,
+      createdAt: new Date("2026-03-01"),
+      updatedAt: new Date("2026-03-01"),
+      roleId: null,
+      portfolioUrl: null,
+      postalCode: null,
+      federalState: "BY",
+      countryId: "country_de",
+      metroCityId: null,
+      valueScore: null,
+      valueScoreBreakdown: null,
+      valueScoreUpdatedAt: null,
+      userId: null,
+      country: { code: "DE" },
+      metroCity: null,
+    };
+    const db = {
+      resource: {
+        findMany: vi.fn().mockResolvedValue([resource]),
+      },
+    };
+
+    vi.mocked(listAssignmentBookings).mockResolvedValue([
+      {
+        id: "assignment_confirmed",
+        projectId: "project_1",
+        resourceId: "resource_1",
+        startDate: new Date("2026-01-05T00:00:00.000Z"),
+        endDate: new Date("2026-01-06T00:00:00.000Z"),
+        hoursPerDay: 8,
+        dailyCostCents: 0,
+        status: "CONFIRMED",
+        project: {
+          id: "project_1",
+          name: "Project 1",
+          shortCode: "P1",
+          status: "ACTIVE",
+          orderType: "CLIENT",
+          dynamicFields: null,
+        },
+        resource: { id: "resource_1", displayName: "Alice", chapter: "CGI" },
+      },
+    ]);
+
+    const caller = createControllerCaller(db);
+    const result = await caller.listWithUtilization({
+      startDate: "2026-01-05T00:00:00.000Z",
+      endDate: "2026-01-06T00:00:00.000Z",
+    });
+
+    expect(result[0]).toMatchObject({
+      bookingCount: 1,
+      bookedHours: 8,
+      availableHours: 8,
+      utilizationPercent: 100,
+    });
+  });
+
+  it("shifts marketplace availability when a local holiday blocks today", async () => {
+    vi.useFakeTimers();
+    vi.setSystemTime(new Date("2026-01-06T10:00:00.000Z"));
+
+    try {
+      const db = {
+        resource: {
+          findMany: vi.fn().mockResolvedValue([
+            {
+              id: "resource_by",
+              displayName: "Bavaria Artist",
+              eid: "E-BY",
+              chapter: "CGI",
+              skills: [{ skill: "Houdini", proficiency: 5 }],
+              availability: {
+                monday: 8,
+                tuesday: 8,
+                wednesday: 8,
+                thursday: 8,
+                friday: 8,
+                saturday: 0,
+                sunday: 0,
+              },
+              chargeabilityTarget: 80,
+              countryId: "country_de",
+              federalState: "BY",
+              metroCityId: null,
+              country: { code: "DE" },
+              metroCity: null,
+            },
+            {
+              id: "resource_hh",
+              displayName: "Hamburg Artist",
+              eid: "E-HH",
+              chapter: "CGI",
+              skills: [{ skill: "Houdini", proficiency: 5 }],
+              availability: {
+                monday: 8,
+                tuesday: 8,
+                wednesday: 8,
+                thursday: 8,
+                friday: 8,
+                saturday: 0,
+                sunday: 0,
+              },
+              chargeabilityTarget: 80,
+              countryId: "country_de",
+              federalState: "HH",
+              metroCityId: null,
+              country: { code: "DE" },
+              metroCity: null,
+            },
+          ]),
+        },
+        assignment: {
+          findMany: vi.fn().mockResolvedValue([]),
+        },
+        demandRequirement: {
+          findMany: vi.fn().mockResolvedValue([]),
+        },
+      };
+
+      const caller = createControllerCaller(db);
+      const result = await caller.getSkillMarketplace({
+        searchSkill: "houdini",
+        availableOnly: true,
+      });
+
+      const bavaria = result.searchResults.find((resource) => resource.id === "resource_by");
+      const hamburg = result.searchResults.find((resource) => resource.id === "resource_hh");
+
+      expect(bavaria?.availableFrom).toBe("2026-01-07T00:00:00.000Z");
+      expect(hamburg?.availableFrom).toBe("2026-01-06T00:00:00.000Z");
+    } finally {
+      vi.useRealTimers();
+    }
+  });
+
   it("uses a composite displayName/id cursor for stable pagination", async () => {
     const db = {
       resource: {
@@ -314,6 +477,84 @@ describe("resource router", () => {
     expect(withProposed[0]?.expectedChargeability).toBe(strict[0]?.expectedChargeability);
   });
 
+  it("excludes regional public holidays from chargeability stats", async () => {
+    const db = {
+      resource: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            id: "resource_by",
+            eid: "E-BY",
+            displayName: "Bavaria",
+            chapter: "CGI",
+            chargeabilityTarget: 80,
+            countryId: "country_de",
+            federalState: "BY",
+            metroCityId: "city_munich",
+            country: { code: "DE" },
+            metroCity: { name: "Munich" },
+            availability: {
+              monday: 8,
+              tuesday: 8,
+              wednesday: 8,
+              thursday: 8,
+              friday: 8,
+            },
+          },
+        ]),
+      },
+    };
+
+    vi.mocked(listAssignmentBookings).mockResolvedValue([
+      {
+        id: "assignment_holiday",
+        projectId: "project_1",
+        resourceId: "resource_by",
+        startDate: new Date("2026-01-06T00:00:00.000Z"),
+        endDate: new Date("2026-01-06T00:00:00.000Z"),
+        hoursPerDay: 8,
+        dailyCostCents: 0,
+        status: "CONFIRMED",
+        project: {
+          id: "project_1",
+          name: "Project 1",
+          shortCode: "P1",
+          status: "ACTIVE",
+          orderType: "CLIENT",
+          dynamicFields: null,
+        },
+        resource: { id: "resource_by", displayName: "Bavaria", chapter: "CGI" },
+      },
+    ]);
+
+    const RealDate = Date;
+    class MockDate extends Date {
+      constructor(...args: ConstructorParameters<typeof Date>) {
+        if (args.length === 0) {
+          super("2026-01-15T00:00:00.000Z");
+          return;
+        }
+        super(...args);
+      }
+      static now() {
+        return new RealDate("2026-01-15T00:00:00.000Z").getTime();
+      }
+    }
+    vi.stubGlobal("Date", MockDate);
+
+    try {
+      const caller = createControllerCaller(db);
+      const result = await caller.getChargeabilityStats({});
+
+      expect(result[0]).toMatchObject({
+        actualChargeability: 0,
+        expectedChargeability: 0,
+        availableHours: 168,
+      });
+    } finally {
+      vi.unstubAllGlobals();
+    }
+  });
+
   it("applies country filters including explicit no-country toggle", async () => {
     const db = {
       resource: {
diff --git a/packages/api/src/__tests__/staffing-router.test.ts b/packages/api/src/__tests__/staffing-router.test.ts
index 9fa7bf9..7b126ef 100644
--- a/packages/api/src/__tests__/staffing-router.test.ts
+++ b/packages/api/src/__tests__/staffing-router.test.ts
@@ -17,23 +17,6 @@ vi.mock("@capakraken/staffing", () => ({
       },
     })),
   ),
-  analyzeUtilization: vi.fn().mockReturnValue({
-    resourceId: "res_1",
-    displayName: "Alice",
-    totalDays: 20,
-    allocatedDays: 15,
-    utilizationPercent: 75,
-    chargeablePercent: 60,
-    overallocatedDays: 0,
-    dailyBreakdown: [],
-  }),
-  findCapacityWindows: vi.fn().mockReturnValue([
-    {
-      startDate: new Date("2026-04-01"),
-      endDate: new Date("2026-04-10"),
-      availableHoursPerDay: 6,
-    },
-  ]),
 }));
 
 vi.mock("@capakraken/application", () => ({
@@ -76,6 +59,11 @@ function sampleResource(overrides: Record<string, unknown> = {}) {
     isActive: true,
     valueScore: 85,
     chapter: "VFX",
+    countryId: "country_de",
+    federalState: "BY",
+    metroCityId: null,
+    country: { code: "DE" },
+    metroCity: null,
     ...overrides,
   };
 }
@@ -105,6 +93,30 @@ describe("staffing.getSuggestions", () => {
     expect(result).toHaveLength(2);
     expect(result[0]).toHaveProperty("resourceId");
     expect(result[0]).toHaveProperty("score");
+    expect(result[0]).toMatchObject({
+      resourceName: "Alice",
+      eid: "alice",
+      location: {
+        countryCode: "DE",
+        federalState: "BY",
+      },
+      capacity: expect.objectContaining({
+        requestedHoursPerDay: 8,
+        baseAvailableHours: expect.any(Number),
+        effectiveAvailableHours: expect.any(Number),
+        remainingHoursPerDay: expect.any(Number),
+        holidayHoursDeduction: expect.any(Number),
+      }),
+      conflicts: {
+        count: expect.any(Number),
+        conflictDays: expect.any(Array),
+        details: expect.any(Array),
+      },
+      ranking: expect.objectContaining({
+        rank: 1,
+        components: expect.any(Array),
+      }),
+    });
   });
 
   it("filters resources by chapter when provided", async () => {
@@ -175,6 +187,58 @@ describe("staffing.getSuggestions", () => {
       }),
     );
   });
+
+  it("uses value score as a transparent tiebreaker within two score points", async () => {
+    const resources = [
+      sampleResource({ id: "res_1", displayName: "Alice", eid: "alice", valueScore: 60 }),
+      sampleResource({ id: "res_2", displayName: "Bob", eid: "bob", valueScore: 95 }),
+    ];
+    const db = {
+      resource: {
+        findMany: vi.fn().mockResolvedValue(resources),
+      },
+    };
+
+    const { rankResources } = await import("@capakraken/staffing");
+    vi.mocked(rankResources).mockImplementationOnce((input: { resources: Array<{ id: string }> }) => ([
+      {
+        resourceId: input.resources[0]!.id,
+        score: 80,
+        breakdown: {
+          skillScore: 80,
+          availabilityScore: 80,
+          costScore: 80,
+          utilizationScore: 80,
+        },
+      },
+      {
+        resourceId: input.resources[1]!.id,
+        score: 79,
+        breakdown: {
+          skillScore: 79,
+          availabilityScore: 79,
+          costScore: 79,
+          utilizationScore: 79,
+        },
+      },
+    ]));
+
+    const caller = createProtectedCaller(db);
+    const result = await caller.getSuggestions({
+      requiredSkills: ["Compositing"],
+      startDate: new Date("2026-04-01"),
+      endDate: new Date("2026-04-30"),
+      hoursPerDay: 8,
+    });
+
+    expect(result[0]?.resourceId).toBe("res_2");
+    expect(result[0]?.ranking).toMatchObject({
+      rank: 1,
+      baseRank: 2,
+      tieBreakerApplied: true,
+    });
+    expect(result[0]?.ranking.tieBreakerReason).toContain("value score");
+  });
 });
 
 // ─── analyzeUtilization ──────────────────────────────────────────────────────
@@ -186,6 +250,11 @@ describe("staffing.analyzeUtilization", () => {
       displayName: "Alice",
       chargeabilityTarget: 80,
       availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+      countryId: "country_de",
+      federalState: "BY",
+      metroCityId: null,
+      country: { code: "DE" },
+      metroCity: null,
     };
     const db = {
       resource: {
@@ -200,10 +269,56 @@ describe("staffing.analyzeUtilization", () => {
       endDate: new Date("2026-04-30"),
     });
 
-    expect(result).toHaveProperty("utilizationPercent");
+    expect(result).toHaveProperty("currentChargeability");
     expect(result.resourceId).toBe("res_1");
   });
 
+  it("excludes Bavarian public holidays from chargeability analysis", async () => {
+    const resource = {
+      id: "res_1",
+      displayName: "Alice",
+      chargeabilityTarget: 80,
+      availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+      countryId: "country_de",
+      federalState: "BY",
+      metroCityId: null,
+      country: { code: "DE" },
+      metroCity: null,
+    };
+    const db = {
+      resource: {
+        findUnique: vi.fn().mockResolvedValue(resource),
+      },
+    };
+
+    const { listAssignmentBookings } = await import("@capakraken/application");
+    vi.mocked(listAssignmentBookings).mockResolvedValue([
+      {
+        id: "a1",
+        projectId: "project_1",
+        resourceId: "res_1",
+        startDate: new Date("2026-01-05T00:00:00.000Z"),
+        endDate: new Date("2026-01-06T00:00:00.000Z"),
+        hoursPerDay: 8,
+        dailyCostCents: 0,
+        status: "CONFIRMED",
+        project: { id: "project_1", name: "Chargeable", shortCode: "CHG", status: "ACTIVE", orderType: "CHARGEABLE", clientId: null, dynamicFields: null },
+        resource: { id: "res_1", displayName: "Alice", chapter: "VFX" },
+      },
+    ]);
+
+    const caller = createProtectedCaller(db);
+    const result = await caller.analyzeUtilization({
+      resourceId: "res_1",
+      startDate: new Date("2026-01-05T00:00:00.000Z"),
+      endDate: new Date("2026-01-06T00:00:00.000Z"),
+    });
+
+    expect(result.currentChargeability).toBe(100);
+    expect(result.overallocatedDays).toEqual([]);
+    expect(result.underutilizedDays).toEqual([]);
+  });
+
   it("throws NOT_FOUND when resource does not exist", async () => {
     const db = {
       resource: {
@@ -230,6 +345,11 @@ describe("staffing.findCapacity", () => {
       id: "res_1",
       displayName: "Alice",
       availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+      countryId: "country_de",
+      federalState: "BY",
+      metroCityId: null,
+      country: { code: "DE" },
+      metroCity: null,
     };
     const db = {
       resource: {
@@ -244,8 +364,53 @@ describe("staffing.findCapacity", () => {
       endDate: new Date("2026-04-30"),
     });
 
-    expect(result).toHaveLength(1);
+    expect(result.length).toBeGreaterThan(0);
     expect(result[0]).toHaveProperty("availableHoursPerDay");
+    expect(result.every((window) => window.availableHoursPerDay > 0)).toBe(true);
+    expect(result.reduce((sum, window) => sum + window.availableDays, 0)).toBeGreaterThan(0);
+  });
+
+  it("splits capacity windows around Bavarian public holidays", async () => {
+    const resource = {
+      id: "res_1",
+      displayName: "Alice",
+      availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+      countryId: "country_de",
+      federalState: "BY",
+      metroCityId: null,
+      country: { code: "DE" },
+      metroCity: null,
+    };
+    const db = {
+      resource: {
+        findUnique: vi.fn().mockResolvedValue(resource),
+      },
+    };
+
+    const { listAssignmentBookings } = await import("@capakraken/application");
+    vi.mocked(listAssignmentBookings).mockResolvedValue([]);
+
+    const caller = createProtectedCaller(db);
+    const result = await caller.findCapacity({
+      resourceId: "res_1",
+      startDate: new Date("2026-01-05T00:00:00.000Z"),
+      endDate: new Date("2026-01-07T00:00:00.000Z"),
+      minAvailableHoursPerDay: 4,
+    });
+
+    expect(result).toHaveLength(2);
+    expect(result[0]).toEqual(
+      expect.objectContaining({
+        startDate: new Date("2026-01-05T00:00:00.000Z"),
+        endDate: new Date("2026-01-05T00:00:00.000Z"),
+      }),
+    );
+    expect(result[1]).toEqual(
+      expect.objectContaining({
+        startDate: new Date("2026-01-07T00:00:00.000Z"),
+        endDate: new Date("2026-01-07T00:00:00.000Z"),
+      }),
+    );
   });
 
   it("throws NOT_FOUND when resource does not exist", async () => {
@@ -265,11 +430,16 @@ describe("staffing.findCapacity", () => {
     ).rejects.toThrow("Resource not found");
   });
 
-  it("passes minAvailableHoursPerDay to engine", async () => {
+  it("honors minAvailableHoursPerDay when computing holiday-aware windows", async () => {
     const resource = {
       id: "res_1",
       displayName: "Alice",
       availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+      countryId: "country_de",
+      federalState: "BY",
+      metroCityId: null,
+      country: { code: "DE" },
+      metroCity: null,
     };
     const db = {
       resource: {
@@ -277,21 +447,30 @@ describe("staffing.findCapacity", () => {
       },
     };
 
-    const { findCapacityWindows } = await import("@capakraken/staffing");
+    const { listAssignmentBookings } = await import("@capakraken/application");
+    vi.mocked(listAssignmentBookings).mockResolvedValue([
+      {
+        id: "a1",
+        projectId: "project_1",
+        resourceId: "res_1",
+        startDate: new Date("2026-04-01T00:00:00.000Z"),
+        endDate: new Date("2026-04-30T00:00:00.000Z"),
+        hoursPerDay: 3,
+        dailyCostCents: 0,
+        status: "CONFIRMED",
+        project: { id: "project_1", name: "Project", shortCode: "PRJ", status: "ACTIVE", orderType: "CHARGEABLE", clientId: null, dynamicFields: null },
+        resource: { id: "res_1", displayName: "Alice", chapter: "VFX" },
+      },
+    ]);
+
     const caller = createProtectedCaller(db);
-    await caller.findCapacity({
+    const result = await caller.findCapacity({
       resourceId: "res_1",
       startDate: new Date("2026-04-01"),
       endDate: new Date("2026-04-30"),
       minAvailableHoursPerDay: 6,
     });
 
-    expect(findCapacityWindows).toHaveBeenCalledWith(
-      expect.anything(),
-      expect.anything(),
-      expect.any(Date),
-      expect.any(Date),
-      6,
-    );
+    expect(result.every((window) => window.availableHoursPerDay >= 6)).toBe(true);
   });
 });
diff --git a/packages/api/src/__tests__/timeline-allocation.test.ts b/packages/api/src/__tests__/timeline-allocation.test.ts
index 6afe222..9bdcc11 100644
--- a/packages/api/src/__tests__/timeline-allocation.test.ts
+++ b/packages/api/src/__tests__/timeline-allocation.test.ts
@@ -290,4 +290,83 @@ describe("timeline allocation entry resolution", () => {
       }),
     );
   });
+
+  it("returns resolved holiday overlays for assigned resources", async () => {
+    const db = {
+      demandRequirement: {
+        findMany: vi.fn().mockResolvedValue([]),
+      },
+      assignment: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            id: "assignment_1",
+            kind: "assignment",
+            resourceId: "resource_by",
+            projectId: "project_1",
+            startDate: new Date("2026-01-01"),
+            endDate: new Date("2026-01-31"),
+            hoursPerDay: 8,
+            status: AllocationStatus.CONFIRMED,
+            metadata: {},
+            project: {
+              id: "project_1",
+              name: "Project One",
+              shortCode: "PRJ",
+              status: "ACTIVE",
+              startDate: new Date("2026-01-01"),
+              endDate: new Date("2026-03-31"),
+              orderType: "CHARGEABLE",
+              clientId: null,
+            },
+            resource: {
+              id: "resource_by",
+              displayName: "Alice",
+              eid: "E-001",
+              chapter: null,
+            },
+          },
+        ]),
+      },
+      resource: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            id: "resource_by",
+            countryId: "country_de",
+            federalState: "BY",
+            metroCityId: null,
+            country: { code: "DE" },
+            metroCity: null,
+          },
+        ]),
+      },
+      project: {
+        findMany: vi.fn().mockResolvedValue([]),
+      },
+      holidayCalendar: {
+        findMany: vi.fn().mockResolvedValue([]),
+      },
+      country: {
+        findUnique: vi.fn(),
+      },
+      metroCity: {
+        findUnique: vi.fn(),
+      },
+    };
+
+    const caller = createManagerCaller(db);
+    const overlays = await caller.getHolidayOverlays({
+      startDate: new Date("2026-01-01"),
+      endDate: new Date("2026-01-31"),
+    });
+
+    expect(overlays).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({
+          resourceId: "resource_by",
+          type: "PUBLIC_HOLIDAY",
+          note: "Heilige Drei Könige",
+        }),
+      ]),
+    );
+  });
 });
diff --git a/packages/api/src/__tests__/vacation-router.test.ts b/packages/api/src/__tests__/vacation-router.test.ts
index 3c06c92..741f262 100644
--- a/packages/api/src/__tests__/vacation-router.test.ts
+++ b/packages/api/src/__tests__/vacation-router.test.ts
@@ -9,12 +9,30 @@ vi.mock("../sse/event-bus.js", () => ({
   emitVacationUpdated: vi.fn(),
   emitVacationDeleted: vi.fn(),
   emitNotificationCreated: vi.fn(),
+  emitTaskAssigned: vi.fn(),
 }));
 
 vi.mock("../lib/email.js", () => ({
   sendEmail: vi.fn(),
 }));
 
+vi.mock("../lib/create-notification.js", () => ({
+  createNotification: vi.fn().mockResolvedValue("notif_1"),
+}));
+
+vi.mock("../lib/vacation-conflicts.js", () => ({
+  checkVacationConflicts: vi.fn().mockResolvedValue({ warnings: [] }),
+  checkBatchVacationConflicts: vi.fn().mockResolvedValue(new Map()),
+}));
+
+vi.mock("../lib/webhook-dispatcher.js", () => ({
+  dispatchWebhooks: vi.fn().mockResolvedValue(undefined),
+}));
+
+vi.mock("../lib/audit.js", () => ({
+  createAuditEntry: vi.fn().mockResolvedValue(undefined),
+}));
+
 const createCaller = createCallerFactory(vacationRouter);
 
 function createProtectedCaller(db: Record<string, unknown>) {
@@ -91,6 +109,56 @@ const sampleVacation = {
   approvedBy: null,
 };
 
+function createVacationDb(overrides: Record<string, unknown> = {}) {
+  const db = {
+    user: {
+      findUnique: vi.fn().mockResolvedValue({ id: "user_1", systemRole: "USER" }),
+      findMany: vi.fn().mockResolvedValue([{ id: "mgr_1" }, { id: "admin_1" }]),
+    },
+    resource: {
+      findUnique: vi.fn().mockImplementation(async (args?: { select?: Record<string, unknown> }) => {
+        const select = args?.select ?? {};
+        return {
+          ...(select.userId ? { userId: "user_1" } : {}),
+          ...(select.displayName ? { displayName: "Alice" } : {}),
+          ...(select.user ? { user: null } : {}),
+          ...(select.federalState ? { federalState: "BY" } : {}),
+          ...(select.country ? { country: { code: "DE", name: "Germany" } } : {}),
+          ...(select.metroCity ? { metroCity: null } : {}),
+        };
+      }),
+      count: vi.fn().mockResolvedValue(0),
+    },
+    vacation: {
+      findFirst: vi.fn().mockResolvedValue(null),
+      findUnique: vi.fn().mockResolvedValue(sampleVacation),
+      findMany: vi.fn().mockResolvedValue([]),
+      create: vi.fn().mockResolvedValue(sampleVacation),
+      update: vi.fn().mockResolvedValue(sampleVacation),
+      updateMany: vi.fn().mockResolvedValue({ count: 1 }),
+    },
+    notification: {
+      updateMany: vi.fn().mockResolvedValue({ count: 1 }),
+    },
+    auditLog: {
+      create: vi.fn().mockResolvedValue({}),
+    },
+  };
+
+  return {
+    ...db,
+    ...overrides,
+    user: { ...db.user, ...(overrides.user as Record<string, unknown> | undefined) },
+    resource: { ...db.resource, ...(overrides.resource as Record<string, unknown> | undefined) },
+    vacation: { ...db.vacation, ...(overrides.vacation as Record<string, unknown> | undefined) },
+    notification: {
+      ...db.notification,
+      ...(overrides.notification as Record<string, unknown> | undefined),
+    },
+    auditLog: { ...db.auditLog, ...(overrides.auditLog as Record<string, unknown> | undefined) },
+  };
+}
+
 describe("vacation router", () => {
   describe("list", () => {
     it("returns vacations with default filters", async () => {
@@ -199,18 +267,11 @@ describe("vacation router", () => {
         status: VacationStatus.PENDING,
       };
 
-      const db = {
-        user: {
-          findUnique: vi.fn().mockResolvedValue({ id: "user_1", systemRole: "USER" }),
-        },
-        resource: {
-          findUnique: vi.fn().mockResolvedValue({ userId: "user_1" }),
-        },
+      const db = createVacationDb({
         vacation: {
-          findFirst: vi.fn().mockResolvedValue(null),
           create: vi.fn().mockResolvedValue(createdVacation),
         },
-      };
+      });
 
       const caller = createProtectedCaller(db);
       const result = await caller.create({
@@ -239,15 +300,14 @@ describe("vacation router", () => {
         approvedById: "mgr_1",
       };
 
-      const db = {
+      const db = createVacationDb({
         user: {
           findUnique: vi.fn().mockResolvedValue({ id: "mgr_1", systemRole: "MANAGER" }),
         },
         vacation: {
-          findFirst: vi.fn().mockResolvedValue(null),
           create: vi.fn().mockResolvedValue(createdVacation),
         },
-      };
+      });
 
       const caller = createManagerCaller(db);
       const result = await caller.create({
@@ -269,17 +329,11 @@ describe("vacation router", () => {
     });
 
     it("rejects overlapping vacation", async () => {
-      const db = {
-        user: {
-          findUnique: vi.fn().mockResolvedValue({ id: "user_1", systemRole: "USER" }),
-        },
-        resource: {
-          findUnique: vi.fn().mockResolvedValue({ userId: "user_1" }),
-        },
+      const db = createVacationDb({
         vacation: {
           findFirst: vi.fn().mockResolvedValue({ id: "existing_vac" }),
         },
-      };
+      });
 
       const caller = createProtectedCaller(db);
       await expect(
@@ -293,10 +347,10 @@ describe("vacation router", () => {
     });
 
     it("rejects when end date is before start date", async () => {
-      const db = {
+      const db = createVacationDb({
         user: { findUnique: vi.fn() },
         vacation: { findFirst: vi.fn() },
-      };
+      });
 
       const caller = createProtectedCaller(db);
       await expect(
@@ -316,18 +370,11 @@ describe("vacation router", () => {
         halfDayPart: "MORNING",
       };
 
-      const db = {
-        user: {
-          findUnique: vi.fn().mockResolvedValue({ id: "user_1", systemRole: "USER" }),
-        },
-        resource: {
-          findUnique: vi.fn().mockResolvedValue({ userId: "user_1" }),
-        },
+      const db = createVacationDb({
         vacation: {
-          findFirst: vi.fn().mockResolvedValue(null),
           create: vi.fn().mockResolvedValue(createdVacation),
         },
-      };
+      });
 
       const caller = createProtectedCaller(db);
       const result = await caller.create({
@@ -349,6 +396,235 @@ describe("vacation router", () => {
         }),
       );
     });
+
+    it("rejects multi-day half-day vacations", async () => {
+      const db = createVacationDb();
+      const caller = createProtectedCaller(db);
+
+      await expect(caller.create({
+        resourceId: "res_1",
+        type: VacationType.ANNUAL,
+        startDate: new Date("2026-06-01"),
+        endDate: new Date("2026-06-02"),
+        isHalfDay: true,
+        halfDayPart: "MORNING",
+      })).rejects.toThrow();
+
+      expect(db.vacation.create).not.toHaveBeenCalled();
+    });
+
+    it("rejects half-day vacations without a half-day part", async () => {
+      const db = createVacationDb();
+      const caller = createProtectedCaller(db);
+
+      await expect(caller.create({
+        resourceId: "res_1",
+        type: VacationType.ANNUAL,
+        startDate: new Date("2026-06-01"),
+        endDate: new Date("2026-06-01"),
+        isHalfDay: true,
+      })).rejects.toThrow();
+
+      expect(db.vacation.create).not.toHaveBeenCalled();
+    });
+
+    it("rejects half-day parts on full-day vacations", async () => {
+      const db = createVacationDb();
+      const caller = createProtectedCaller(db);
+
+      await expect(caller.create({
+        resourceId: "res_1",
+        type: VacationType.ANNUAL,
+        startDate: new Date("2026-06-01"),
+        endDate: new Date("2026-06-01"),
+        halfDayPart: "AFTERNOON",
+      })).rejects.toThrow();
+
+      expect(db.vacation.create).not.toHaveBeenCalled();
+    });
+
+    it("rejects leave requests that only hit public holidays", async () => {
+      const db = createVacationDb({
+        vacation: {
+          findMany: vi.fn().mockResolvedValue([]),
+        },
+      });
+
+      const caller = createProtectedCaller(db);
+
+      await expect(caller.create({
+        resourceId: "res_1",
+        type: VacationType.ANNUAL,
+        startDate: new Date("2026-01-06T00:00:00.000Z"),
+        endDate: new Date("2026-01-06T00:00:00.000Z"),
+      })).rejects.toThrow("does not deduct any vacation days");
+
+      expect(db.vacation.create).not.toHaveBeenCalled();
+    });
+  });
+
+  describe("previewRequest", () => {
+    it("shows public holidays as non-deductible leave days", async () => {
+      const db = createVacationDb({
+        resource: {
+          findUnique: vi.fn().mockResolvedValue({
+            userId: "user_1",
+            federalState: "BY",
+            country: { code: "DE", name: "Germany" },
+            metroCity: { name: "Augsburg" },
+          }),
+        },
+        vacation: {
+          findMany: vi.fn().mockResolvedValue([]),
+        },
+      });
+
+      const caller = createProtectedCaller(db);
+      const result = await caller.previewRequest({
+        resourceId: "res_1",
+        type: VacationType.ANNUAL,
+        startDate: new Date("2028-08-08T00:00:00.000Z"),
+        endDate: new Date("2028-08-08T00:00:00.000Z"),
+      });
+
+      expect(result.requestedDays).toBe(1);
+      expect(result.effectiveDays).toBe(0);
+      expect(result.deductedDays).toBe(0);
+      expect(result.publicHolidayDates).toContain("2028-08-08");
+      expect(result.holidayContext).toEqual({
+        countryCode: "DE",
+        countryName: "Germany",
+        federalState: "BY",
+        metroCityName: "Augsburg",
+        sources: {
+          hasCalendarHolidays: true,
+          hasLegacyPublicHolidayEntries: false,
+        },
+      });
+      expect(result.holidayDetails).toContainEqual({
+        date: "2028-08-08",
+        source: "CALENDAR",
+      });
+    });
+
+    it("uses custom city holiday calendars for non-deductible leave days", async () => {
+      const db = createVacationDb({
+        resource: {
+          findUnique: vi.fn().mockResolvedValue({
+            userId: "user_1",
+            countryId: "country_de",
+            metroCityId: "city_muc",
+            federalState: "BY",
+            country: { code: "DE", name: "Germany" },
+            metroCity: { name: "Muenchen" },
+          }),
+        },
+        holidayCalendar: {
+          findMany: vi.fn().mockResolvedValue([
+            {
+              id: "cal_muc",
+              name: "Muenchen lokal",
+              scopeType: "CITY",
+              priority: 10,
+              createdAt: new Date("2026-01-01T00:00:00.000Z"),
+              entries: [
+                {
+                  date: new Date("2020-11-15T00:00:00.000Z"),
+                  name: "Lokaler Stadtfeiertag",
+                  isRecurringAnnual: true,
+                },
+              ],
+            },
+          ]),
+        },
+        vacation: {
+          findMany: vi.fn().mockResolvedValue([]),
+        },
+      });
+
+      const caller = createProtectedCaller(db);
+      const result = await caller.previewRequest({
+        resourceId: "res_1",
+        type: VacationType.ANNUAL,
+        startDate: new Date("2026-11-15T00:00:00.000Z"),
+        endDate: new Date("2026-11-15T00:00:00.000Z"),
+      });
+
+      expect(result.requestedDays).toBe(1);
+      expect(result.effectiveDays).toBe(0);
+      expect(result.publicHolidayDates).toContain("2026-11-15");
+      expect(result.holidayContext.countryName).toBe("Germany");
+      expect(result.holidayContext.metroCityName).toBe("Muenchen");
+      expect(db.holidayCalendar.findMany).toHaveBeenCalled();
+    });
+
+    it("marks legacy public holiday entries as a separate preview source", async () => {
+      const db = createVacationDb({
+        resource: {
+          findUnique: vi.fn().mockResolvedValue({
+            userId: "user_1",
+            federalState: "HH",
+            country: { code: "DE", name: "Germany" },
+            metroCity: { name: "Hamburg" },
+          }),
+        },
+        vacation: {
+          findMany: vi.fn().mockResolvedValue([
+            {
+              startDate: new Date("2026-05-01T00:00:00.000Z"),
+              endDate: new Date("2026-05-01T00:00:00.000Z"),
+            },
+          ]),
+        },
+      });
+
+      const caller = createProtectedCaller(db);
+      const result = await caller.previewRequest({
+        resourceId: "res_1",
+        type: VacationType.ANNUAL,
+        startDate: new Date("2026-05-01T00:00:00.000Z"),
+        endDate: new Date("2026-05-01T00:00:00.000Z"),
+      });
+
+      expect(result.publicHolidayDates).toContain("2026-05-01");
+      expect(result.holidayContext.sources).toEqual({
+        hasCalendarHolidays: true,
+        hasLegacyPublicHolidayEntries: true,
+      });
+      expect(result.holidayDetails).toContainEqual({
+        date: "2026-05-01",
+        source: "CALENDAR_AND_LEGACY",
+      });
+    });
+
+    it("rejects multi-day half-day previews", async () => {
+      const db = createVacationDb();
+      const caller = createProtectedCaller(db);
+
+      await expect(caller.previewRequest({
+        resourceId: "res_1",
+        type: VacationType.ANNUAL,
+        startDate: new Date("2026-06-01"),
+        endDate: new Date("2026-06-02"),
+        isHalfDay: true,
+      })).rejects.toThrow();
+    });
+  });
+
+  describe("create manual public holiday handling", () => {
+    it("rejects manual public holiday creation requests", async () => {
+      const db = createVacationDb();
+      const caller = createManagerCaller(db);
+
+      await expect(caller.create({
+        resourceId: "res_1",
+        type: VacationType.PUBLIC_HOLIDAY,
+        startDate: new Date("2026-05-01T00:00:00.000Z"),
+        endDate: new Date("2026-05-01T00:00:00.000Z"),
+      })).rejects.toThrow("Public holidays must be managed via Holiday Calendars or the legacy holiday import");
+
+      expect(db.vacation.create).not.toHaveBeenCalled();
+    });
   });
 
   describe("approve", () => {
@@ -359,7 +635,7 @@ describe("vacation router", () => {
         approvedById: "mgr_1",
       };
 
-      const db = {
+      const db = createVacationDb({
         vacation: {
           findUnique: vi.fn().mockResolvedValue(sampleVacation),
           update: vi.fn().mockResolvedValue(updatedVacation),
@@ -370,7 +646,7 @@ describe("vacation router", () => {
         resource: {
           findUnique: vi.fn().mockResolvedValue(null),
         },
-      };
+      });
 
       const caller = createManagerCaller(db);
       const result = await caller.approve({ id: "vac_1" });
@@ -388,25 +664,25 @@ describe("vacation router", () => {
     });
 
     it("throws NOT_FOUND for missing vacation", async () => {
-      const db = {
+      const db = createVacationDb({
         vacation: {
           findUnique: vi.fn().mockResolvedValue(null),
         },
-      };
+      });
 
       const caller = createManagerCaller(db);
       await expect(caller.approve({ id: "missing" })).rejects.toThrow("Vacation not found");
     });
 
     it("rejects approving an already APPROVED vacation", async () => {
-      const db = {
+      const db = createVacationDb({
         vacation: {
           findUnique: vi.fn().mockResolvedValue({
             ...sampleVacation,
             status: VacationStatus.APPROVED,
           }),
         },
-      };
+      });
 
       const caller = createManagerCaller(db);
       await expect(caller.approve({ id: "vac_1" })).rejects.toThrow(
@@ -429,7 +705,7 @@ describe("vacation router", () => {
         rejectionReason: "Team conflict",
       };
 
-      const db = {
+      const db = createVacationDb({
         vacation: {
           findUnique: vi.fn().mockResolvedValue(sampleVacation),
           update: vi.fn().mockResolvedValue(updatedVacation),
@@ -437,7 +713,7 @@ describe("vacation router", () => {
         resource: {
           findUnique: vi.fn().mockResolvedValue(null),
         },
-      };
+      });
 
       const caller = createManagerCaller(db);
       const result = await caller.reject({ id: "vac_1", rejectionReason: "Team conflict" });
@@ -454,14 +730,14 @@ describe("vacation router", () => {
     });
 
     it("throws when rejecting non-PENDING vacation", async () => {
-      const db = {
+      const db = createVacationDb({
         vacation: {
           findUnique: vi.fn().mockResolvedValue({
             ...sampleVacation,
             status: VacationStatus.APPROVED,
           }),
         },
-      };
+      });
 
       const caller = createManagerCaller(db);
       await expect(caller.reject({ id: "vac_1" })).rejects.toThrow(
@@ -477,15 +753,12 @@ describe("vacation router", () => {
         status: VacationStatus.CANCELLED,
       };
 
-      const db = {
-        user: {
-          findUnique: vi.fn().mockResolvedValue({ id: "user_1", systemRole: "USER" }),
-        },
+      const db = createVacationDb({
         vacation: {
           findUnique: vi.fn().mockResolvedValue(sampleVacation),
           update: vi.fn().mockResolvedValue(updatedVacation),
         },
-      };
+      });
 
       const caller = createProtectedCaller(db);
       const result = await caller.cancel({ id: "vac_1" });
@@ -494,25 +767,25 @@ describe("vacation router", () => {
     });
 
     it("throws NOT_FOUND for missing vacation", async () => {
-      const db = {
+      const db = createVacationDb({
         vacation: {
           findUnique: vi.fn().mockResolvedValue(null),
         },
-      };
+      });
 
       const caller = createProtectedCaller(db);
       await expect(caller.cancel({ id: "missing" })).rejects.toThrow("Vacation not found");
     });
 
     it("throws when already cancelled", async () => {
-      const db = {
+      const db = createVacationDb({
         vacation: {
           findUnique: vi.fn().mockResolvedValue({
             ...sampleVacation,
             status: VacationStatus.CANCELLED,
           }),
         },
-      };
+      });
 
       const caller = createProtectedCaller(db);
       await expect(caller.cancel({ id: "vac_1" })).rejects.toThrow("Already cancelled");
@@ -521,7 +794,7 @@ describe("vacation router", () => {
 
   describe("batchApprove", () => {
     it("approves multiple pending vacations", async () => {
-      const db = {
+      const db = createVacationDb({
         user: {
           findUnique: vi.fn().mockResolvedValue({ id: "mgr_1" }),
         },
@@ -535,7 +808,7 @@ describe("vacation router", () => {
         resource: {
           findUnique: vi.fn().mockResolvedValue(null),
         },
-      };
+      });
 
       const caller = createManagerCaller(db);
       const result = await caller.batchApprove({ ids: ["vac_1", "vac_2"] });
@@ -552,7 +825,7 @@ describe("vacation router", () => {
     });
 
     it("only approves PENDING vacations from the requested set", async () => {
-      const db = {
+      const db = createVacationDb({
         user: {
           findUnique: vi.fn().mockResolvedValue({ id: "mgr_1" }),
         },
@@ -565,7 +838,7 @@ describe("vacation router", () => {
         resource: {
           findUnique: vi.fn().mockResolvedValue(null),
         },
-      };
+      });
 
       const caller = createManagerCaller(db);
       const result = await caller.batchApprove({ ids: ["vac_1", "vac_already_approved"] });
@@ -581,7 +854,10 @@ describe("vacation router", () => {
 
   describe("batchReject", () => {
     it("rejects multiple pending vacations with optional reason", async () => {
-      const db = {
+      const db = createVacationDb({
+        user: {
+          findUnique: vi.fn().mockResolvedValue({ id: "mgr_1" }),
+        },
         vacation: {
           findMany: vi.fn().mockResolvedValue([
             { id: "vac_1", resourceId: "res_1" },
@@ -591,7 +867,7 @@ describe("vacation router", () => {
         resource: {
           findUnique: vi.fn().mockResolvedValue(null),
         },
-      };
+      });
 
       const caller = createManagerCaller(db);
       const result = await caller.batchReject({
@@ -731,8 +1007,8 @@ describe("vacation router", () => {
       const db = {
         resource: {
           findMany: vi.fn().mockResolvedValue([
-            { id: "res_1" },
-            { id: "res_2" },
+            { id: "res_1", federalState: "BY", country: { code: "DE" }, metroCity: null },
+            { id: "res_2", federalState: "BY", country: { code: "DE" }, metroCity: null },
           ]),
         },
         user: {
@@ -759,7 +1035,9 @@ describe("vacation router", () => {
     it("skips already existing holidays", async () => {
       const db = {
         resource: {
-          findMany: vi.fn().mockResolvedValue([{ id: "res_1" }]),
+          findMany: vi.fn().mockResolvedValue([
+            { id: "res_1", federalState: "BY", country: { code: "DE" }, metroCity: null },
+          ]),
         },
         user: {
           findUnique: vi.fn().mockResolvedValue({ id: "admin_1" }),
diff --git a/packages/api/src/lib/auto-staffing.ts b/packages/api/src/lib/auto-staffing.ts
index 5e11f6e..fecd654 100644
--- a/packages/api/src/lib/auto-staffing.ts
+++ b/packages/api/src/lib/auto-staffing.ts
@@ -1,6 +1,11 @@
 import { listAssignmentBookings } from "@capakraken/application";
 import { rankResources } from "@capakraken/staffing";
-import type { SkillEntry } from "@capakraken/shared";
+import type { SkillEntry, WeekdayAvailability } from "@capakraken/shared";
+import {
+  calculateEffectiveAvailableHours,
+  calculateEffectiveBookedHours,
+  loadResourceDailyAvailabilityContexts,
+} from "./resource-capacity.js";
 import { createNotificationsForUsers } from "./create-notification.js";
 
 /**
@@ -58,6 +63,11 @@ type DbClient = Parameters<typeof listAssignmentBookings>[0] & {
       chargeabilityTarget: number;
       availability: unknown;
       valueScore: number | null;
+      countryId: string | null;
+      federalState: string | null;
+      metroCityId: string | null;
+      country: { code: string | null } | null;
+      metroCity: { name: string | null } | null;
     }>>;
   };
   notification: {
@@ -154,27 +164,54 @@ export async function generateAutoSuggestions(
       endDate: demand.endDate,
       resourceIds: resources.map((r) => r.id),
     });
+    const contexts = await loadResourceDailyAvailabilityContexts(
+      db as Parameters<typeof loadResourceDailyAvailabilityContexts>[0],
+      resources.map((resource) => ({
+        id: resource.id,
+        availability: resource.availability as unknown as WeekdayAvailability,
+        countryId: resource.countryId,
+        countryCode: resource.country?.code,
+        federalState: resource.federalState,
+        metroCityId: resource.metroCityId,
+        metroCityName: resource.metroCity?.name,
+      })),
+      demand.startDate,
+      demand.endDate,
+    );
 
     // 5. Enrich resources with utilization data for the demand's date range
     const enrichedResources = resources.map((resource) => {
-      const avail = resource.availability as
-        | { monday?: number; tuesday?: number; wednesday?: number; thursday?: number; friday?: number }
-        | null;
-      const totalAvailableHours = avail?.monday ?? 8;
+      const availability = resource.availability as unknown as WeekdayAvailability;
+      const context = contexts.get(resource.id);
       const resourceBookings = bookings.filter((b) => b.resourceId === resource.id);
-
-      const allocatedHoursPerDay = resourceBookings.reduce(
-        (sum, b) => sum + b.hoursPerDay,
+      const totalAvailableHours = calculateEffectiveAvailableHours({
+        availability,
+        periodStart: demand.startDate,
+        periodEnd: demand.endDate,
+        context,
+      });
+      const allocatedHours = resourceBookings.reduce(
+        (sum, booking) =>
+          sum + calculateEffectiveBookedHours({
+            availability,
+            startDate: booking.startDate,
+            endDate: booking.endDate,
+            hoursPerDay: booking.hoursPerDay,
+            periodStart: demand.startDate,
+            periodEnd: demand.endDate,
+            context,
+          }),
         0,
       );
 
       const utilizationPercent =
         totalAvailableHours > 0
-          ? Math.min(100, (allocatedHoursPerDay / totalAvailableHours) * 100)
+          ? Math.min(100, (allocatedHours / totalAvailableHours) * 100)
           : 0;
 
-      const wouldExceedCapacity =
-        allocatedHoursPerDay + demand.hoursPerDay > totalAvailableHours;
+      const wouldExceedCapacity = totalAvailableHours > 0
+        ? allocatedHours + demand.hoursPerDay > totalAvailableHours
+        : demand.hoursPerDay > 0;
 
       return {
         id: resource.id,
diff --git a/packages/api/src/lib/chargeability-alerts.ts b/packages/api/src/lib/chargeability-alerts.ts
index 24712d0..89e1529 100644
--- a/packages/api/src/lib/chargeability-alerts.ts
+++ b/packages/api/src/lib/chargeability-alerts.ts
@@ -1,14 +1,16 @@
 import {
   deriveResourceForecast,
   getMonthRange,
-  countWorkingDaysInOverlap,
-  calculateSAH,
   type AssignmentSlice,
 } from "@capakraken/engine";
-import type { SpainScheduleRule } from "@capakraken/shared";
+import type { WeekdayAvailability } from "@capakraken/shared";
 import { isChargeabilityActualBooking, listAssignmentBookings } from "@capakraken/application";
-import { VacationStatus } from "@capakraken/db";
 import { createNotificationsForUsers } from "./create-notification.js";
+import {
+  calculateEffectiveAvailableHours,
+  calculateEffectiveBookedHours,
+  loadResourceDailyAvailabilityContexts,
+} from "./resource-capacity.js";
 
 /**
  * Minimal DB client type for chargeability alerts.
@@ -24,23 +26,19 @@ type DbClient = {
         id: string;
         displayName: string;
         fte: number;
+        availability: unknown;
+        countryId: string | null;
+        metroCityId: string | null;
+        federalState: string | null;
         chargeabilityTarget: number;
-        country: { dailyWorkingHours: number | null; scheduleRules: unknown } | null;
+        country: {
+          id?: string | null;
+          code: string | null;
+          dailyWorkingHours: number | null;
+          scheduleRules: unknown;
+        } | null;
         managementLevelGroup: { targetPercentage: number | null } | null;
-      }>
-    >;
-  };
-  vacation: {
-    findMany: (args: {
-      where: Record<string, unknown>;
-      select: Record<string, unknown>;
-    }) => Promise<
-      Array<{
-        resourceId: string;
-        startDate: Date;
-        endDate: Date;
-        type: string;
-        isHalfDay: boolean;
+        metroCity: { id?: string | null; name: string | null } | null;
       }>
     >;
   };
@@ -105,9 +103,14 @@ export async function checkChargeabilityAlerts(
       id: true,
       displayName: true,
       fte: true,
+      availability: true,
+      countryId: true,
+      metroCityId: true,
+      federalState: true,
       chargeabilityTarget: true,
-      country: { select: { dailyWorkingHours: true, scheduleRules: true } },
+      country: { select: { id: true, code: true, dailyWorkingHours: true, scheduleRules: true } },
       managementLevelGroup: { select: { targetPercentage: true } },
+      metroCity: { select: { id: true, name: true } },
     },
   });
 
@@ -121,56 +124,32 @@ export async function checkChargeabilityAlerts(
     endDate: monthEnd,
     resourceIds,
   });
-
-  // Fetch vacations for the current month
-  const vacations = await (db as DbClient).vacation.findMany({
-    where: {
-      resourceId: { in: resourceIds },
-      status: VacationStatus.APPROVED,
-      startDate: { lte: monthEnd },
-      endDate: { gte: monthStart },
-    },
-    select: {
-      resourceId: true,
-      startDate: true,
-      endDate: true,
-      type: true,
-      isHalfDay: true,
-    },
-  });
+  const availabilityContexts = await loadResourceDailyAvailabilityContexts(
+    db as Parameters<typeof loadResourceDailyAvailabilityContexts>[0],
+    resources.map((resource) => ({
+      id: resource.id,
+      availability: resource.availability as unknown as WeekdayAvailability,
+      countryId: resource.countryId,
+      countryCode: resource.country?.code,
+      federalState: resource.federalState,
+      metroCityId: resource.metroCityId,
+      metroCityName: resource.metroCity?.name,
+    })),
+    monthStart,
+    monthEnd,
+  );
 
   // Compute chargeability per resource
   const underperformers: Array<{ resource: typeof resources[0]; chg: number; target: number; gap: number }> = [];
 
   for (const resource of resources) {
-    const dailyHours = resource.country?.dailyWorkingHours ?? 8;
-
-    // Compute absence dates for SAH
-    const resourceVacations = vacations.filter((v) => v.resourceId === resource.id);
-    const absenceDates: string[] = [];
-    for (const v of resourceVacations) {
-      const vStart = new Date(Math.max(v.startDate.getTime(), monthStart.getTime()));
-      const vEnd = new Date(Math.min(v.endDate.getTime(), monthEnd.getTime()));
-      if (vStart > vEnd) continue;
-      const cursor = new Date(vStart);
-      cursor.setUTCHours(0, 0, 0, 0);
-      const endNorm = new Date(vEnd);
-      endNorm.setUTCHours(0, 0, 0, 0);
-      while (cursor <= endNorm) {
-        absenceDates.push(cursor.toISOString().slice(0, 10));
-        cursor.setUTCDate(cursor.getUTCDate() + 1);
-      }
-    }
-
-    const scheduleRules = (resource.country?.scheduleRules ?? null) as SpainScheduleRule | null;
-    const sahResult = calculateSAH({
-      dailyWorkingHours: dailyHours,
-      scheduleRules,
-      fte: resource.fte,
+    const availability = resource.availability as unknown as WeekdayAvailability;
+    const context = availabilityContexts.get(resource.id);
+    const availableHours = calculateEffectiveAvailableHours({
+      availability,
       periodStart: monthStart,
       periodEnd: monthEnd,
-      publicHolidays: [],
-      absenceDays: absenceDates,
+      context,
     });
 
     // Build assignment slices
@@ -178,12 +157,24 @@ export async function checkChargeabilityAlerts(
       (b) => b.resourceId === resource.id && isChargeabilityActualBooking(b, false),
     );
 
-    const slices: AssignmentSlice[] = resourceBookings.map((b) => {
-      const workingDays = countWorkingDaysInOverlap(monthStart, monthEnd, b.startDate, b.endDate);
+    const slices: AssignmentSlice[] = resourceBookings.flatMap((b) => {
+      const totalChargeableHours = calculateEffectiveBookedHours({
+        availability,
+        startDate: b.startDate,
+        endDate: b.endDate,
+        hoursPerDay: b.hoursPerDay,
+        periodStart: monthStart,
+        periodEnd: monthEnd,
+        context,
+      });
+      if (totalChargeableHours <= 0) {
+        return [];
+      }
       return {
         hoursPerDay: b.hoursPerDay,
-        workingDays,
+        workingDays: 0,
         categoryCode: "Chg", // simplified — treat all actual bookings as chargeable
+        totalChargeableHours,
       };
     });
 
@@ -194,7 +185,7 @@ export async function checkChargeabilityAlerts(
       fte: resource.fte,
       targetPercentage: targetPct,
       assignments: slices,
-      sah: sahResult.standardAvailableHours,
+      sah: availableHours,
     });
 
     const chgPct = forecast.chg * 100;
diff --git a/packages/api/src/lib/holiday-auto-import.ts b/packages/api/src/lib/holiday-auto-import.ts
index d18b377..e32bc46 100644
--- a/packages/api/src/lib/holiday-auto-import.ts
+++ b/packages/api/src/lib/holiday-auto-import.ts
@@ -9,7 +9,7 @@
  * Duplicate-safe: skips holidays that already exist (by date + type + resourceId).
  */
 
-import { getPublicHolidays } from "@capakraken/shared";
+import { asHolidayResolverDb, getResolvedCalendarHolidays } from "./holiday-availability.js";
 
 interface MinimalVacation {
   resourceId: string;
@@ -19,14 +19,20 @@ interface MinimalVacation {
 
 interface AutoImportDb {
   resource: {
-    findMany: (args: {
-      where: { isActive: boolean };
-      select: { id: string; federalState: string };
-    }) => Promise<Array<{ id: string; federalState: string | null }>>;
+    findMany: (args: any) => any;
+  };
+  country?: {
+    findUnique: (args: any) => any;
+  };
+  metroCity?: {
+    findUnique: (args: any) => any;
+  };
+  holidayCalendar?: {
+    findMany: (args: any) => any;
   };
   vacation: {
-    findMany: (args: unknown) => Promise<MinimalVacation[]>;
-    createMany: (args: { data: unknown[]; skipDuplicates?: boolean }) => Promise<{ count: number }>;
+    findMany: (args: any) => any;
+    createMany: (args: any) => any;
   };
 }
 
@@ -42,34 +48,60 @@ export interface AutoImportResult {
  * Returns the number of holiday vacation records created.
  */
 export async function autoImportPublicHolidays(
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  db: any,
+  db: AutoImportDb,
   year: number,
 ): Promise<AutoImportResult> {
-  const resources: Array<{ id: string; federalState: string | null }> = await db.resource.findMany({
+  const resources = await db.resource.findMany({
     where: { isActive: true },
-    select: { id: true, federalState: true },
+    select: {
+      id: true,
+      federalState: true,
+      countryId: true,
+      metroCityId: true,
+      country: { select: { code: true } },
+      metroCity: { select: { name: true } },
+    },
   });
 
   if (resources.length === 0) {
     return { year, holidaysCreated: 0, resourcesProcessed: 0, skippedExisting: 0 };
   }
 
-  // Group resources by federal state (null = federal-only holidays)
-  const byState = new Map<string | null, string[]>();
+  const nextYearStart = new Date(`${year}-01-01T00:00:00.000Z`);
+  const nextYearEnd = new Date(`${year}-12-31T00:00:00.000Z`);
+  const byHolidayProfile = new Map<string, typeof resources>();
+
   for (const resource of resources) {
-    const state = resource.federalState ?? null;
-    const group = byState.get(state) ?? [];
-    group.push(resource.id);
-    byState.set(state, group);
+    const profileKey = JSON.stringify({
+      countryCode: resource.country?.code ?? null,
+      federalState: resource.federalState ?? null,
+      metroCityName: resource.metroCity?.name ?? null,
+    });
+    const group = byHolidayProfile.get(profileKey) ?? [];
+    group.push(resource);
+    byHolidayProfile.set(profileKey, group);
   }
 
   let totalCreated = 0;
   let totalSkipped = 0;
 
-  for (const [state, resourceIds] of byState) {
-    const holidays = getPublicHolidays(year, state ?? undefined);
+  for (const [, groupedResources] of byHolidayProfile) {
+    const sample = groupedResources[0];
+    if (!sample) {
+      continue;
+    }
+
+    const holidays = await getResolvedCalendarHolidays(asHolidayResolverDb(db), {
+      periodStart: nextYearStart,
+      periodEnd: nextYearEnd,
+      countryId: sample.countryId,
+      countryCode: sample.country?.code ?? null,
+      federalState: sample.federalState,
+      metroCityId: sample.metroCityId,
+      metroCityName: sample.metroCity?.name ?? null,
+    });
     if (holidays.length === 0) continue;
+    const resourceIds = groupedResources.map((resource: { id: string }) => resource.id);
 
     for (const holiday of holidays) {
       const holidayDate = new Date(holiday.date);
@@ -86,13 +118,13 @@ export async function autoImportPublicHolidays(
       });
 
       const existingResourceIds = new Set(existing.map((v: MinimalVacation) => v.resourceId));
-      const newResourceIds = resourceIds.filter((id) => !existingResourceIds.has(id));
+      const newResourceIds = resourceIds.filter((id: string) => !existingResourceIds.has(id));
 
       totalSkipped += existingResourceIds.size;
 
       if (newResourceIds.length === 0) continue;
 
-      const records = newResourceIds.map((resourceId) => ({
+      const records = newResourceIds.map((resourceId: string) => ({
         resourceId,
         type: "PUBLIC_HOLIDAY",
         status: "APPROVED",
diff --git a/packages/api/src/lib/holiday-availability.ts b/packages/api/src/lib/holiday-availability.ts
new file mode 100644
index 0000000..04d7df1
--- /dev/null
+++ b/packages/api/src/lib/holiday-availability.ts
@@ -0,0 +1,464 @@
+import { getPublicHolidays, type AbsenceDay } from "@capakraken/shared";
+
+type VacationLike = {
+  startDate: Date;
+  endDate: Date;
+  type: string;
+  isHalfDay: boolean;
+};
+
+type HolidayAvailabilityInput = {
+  vacations: VacationLike[];
+  periodStart: Date;
+  periodEnd: Date;
+  countryCode?: string | null | undefined;
+  federalState?: string | null | undefined;
+  metroCityName?: string | null | undefined;
+  resolvedHolidayStrings?: string[] | undefined;
+};
+
+type HolidayAvailabilityResult = {
+  absenceDateStrings: string[];
+  publicHolidayStrings: string[];
+  absenceDays: AbsenceDay[];
+};
+
+export type CalendarHoliday = {
+  date: string;
+  name: string;
+  scope: "COUNTRY" | "STATE" | "CITY";
+};
+
+type CalendarScope = CalendarHoliday["scope"];
+
+type HolidayCalendarEntryRecord = {
+  date: Date;
+  name: string;
+  isRecurringAnnual: boolean;
+};
+
+type HolidayCalendarRecord = {
+  id: string;
+  name: string;
+  scopeType: CalendarScope;
+  priority: number;
+  createdAt?: Date;
+  entries: HolidayCalendarEntryRecord[];
+};
+
+type HolidayResolverDb = {
+  [key: string]: unknown;
+  country?: {
+    findUnique: (args: any) => any;
+  };
+  metroCity?: {
+    findUnique: (args: any) => any;
+  };
+  holidayCalendar?: {
+    findMany: (args: any) => any;
+  };
+};
+
+type ResolvedHoliday = CalendarHoliday & {
+  calendarName: string;
+  priority: number;
+  sourceType: "BUILTIN" | "CUSTOM";
+};
+
+export function asHolidayResolverDb(db: unknown): HolidayResolverDb {
+  return db as HolidayResolverDb;
+}
+
+export function toIsoDate(value: Date): string {
+  return value.toISOString().slice(0, 10);
+}
+
+type CityHolidayRule = {
+  countryCode: string;
+  cityName: string;
+  resolveDates: (year: number) => string[];
+};
+
+const CITY_HOLIDAY_RULES: CityHolidayRule[] = [
+  {
+    countryCode: "DE",
+    cityName: "Augsburg",
+    resolveDates: (year) => [`${year}-08-08`],
+  },
+];
+
+const SCOPE_WEIGHT: Record<CalendarScope, number> = {
+  COUNTRY: 1,
+  STATE: 2,
+  CITY: 3,
+};
+
+function normalizeCityName(cityName?: string | null): string | null {
+  const normalized = cityName?.trim().toLowerCase();
+  return normalized && normalized.length > 0 ? normalized : null;
+}
+
+function normalizeStateCode(stateCode?: string | null): string | null {
+  const normalized = stateCode?.trim().toUpperCase();
+  return normalized && normalized.length > 0 ? normalized : null;
+}
+
+function resolveCalendarEntries(
+  calendars: HolidayCalendarRecord[],
+  periodStart: Date,
+  periodEnd: Date,
+): ResolvedHoliday[] {
+  const startYear = periodStart.getUTCFullYear();
+  const endYear = periodEnd.getUTCFullYear();
+  const startIso = toIsoDate(periodStart);
+  const endIso = toIsoDate(periodEnd);
+  const resolved = new Map<string, ResolvedHoliday>();
+
+  for (const calendar of calendars) {
+    for (const entry of calendar.entries) {
+      const baseDate = new Date(entry.date);
+
+      for (let year = startYear; year <= endYear; year += 1) {
+        const effectiveDate = entry.isRecurringAnnual
+          ? new Date(Date.UTC(year, baseDate.getUTCMonth(), baseDate.getUTCDate()))
+          : baseDate;
+        const key = toIsoDate(effectiveDate);
+
+        if (key < startIso || key > endIso) {
+          if (!entry.isRecurringAnnual) {
+            break;
+          }
+          continue;
+        }
+
+        const candidate: ResolvedHoliday = {
+          date: key,
+          name: entry.name,
+          scope: calendar.scopeType,
+          calendarName: calendar.name,
+          priority: calendar.priority,
+          sourceType: "CUSTOM",
+        };
+        const existing = resolved.get(key);
+
+        if (
+          !existing
+          || SCOPE_WEIGHT[candidate.scope] > SCOPE_WEIGHT[existing.scope]
+          || (
+            SCOPE_WEIGHT[candidate.scope] === SCOPE_WEIGHT[existing.scope]
+            && candidate.priority > existing.priority
+          )
+          || (
+            SCOPE_WEIGHT[candidate.scope] === SCOPE_WEIGHT[existing.scope]
+            && candidate.priority === existing.priority
+            && existing.sourceType === "BUILTIN"
+          )
+        ) {
+          resolved.set(key, candidate);
+        }
+
+        if (!entry.isRecurringAnnual) {
+          break;
+        }
+      }
+    }
+  }
+
+  return [...resolved.values()].sort((left, right) => left.date.localeCompare(right.date));
+}
+
+function mergeResolvedHolidays(
+  builtInHolidays: CalendarHoliday[],
+  customHolidays: ResolvedHoliday[],
+): ResolvedHoliday[] {
+  const merged = new Map<string, ResolvedHoliday>();
+
+  for (const holiday of builtInHolidays) {
+    merged.set(holiday.date, {
+      ...holiday,
+      calendarName: "System",
+      priority: Number.MIN_SAFE_INTEGER,
+      sourceType: "BUILTIN",
+    });
+  }
+
+  for (const holiday of customHolidays) {
+    const existing = merged.get(holiday.date);
+    if (
+      !existing
+      || SCOPE_WEIGHT[holiday.scope] > SCOPE_WEIGHT[existing.scope]
+      || (
+        SCOPE_WEIGHT[holiday.scope] === SCOPE_WEIGHT[existing.scope]
+        && holiday.priority >= existing.priority
+      )
+    ) {
+      merged.set(holiday.date, holiday);
+    }
+  }
+
+  return [...merged.values()].sort((left, right) => left.date.localeCompare(right.date));
+}
+
+async function loadScopedHolidayCalendars(
+  db: HolidayResolverDb,
+  input: {
+    countryId?: string | null | undefined;
+    stateCode?: string | null | undefined;
+    metroCityId?: string | null | undefined;
+  },
+): Promise<HolidayCalendarRecord[]> {
+  if (!input.countryId || typeof db.holidayCalendar?.findMany !== "function") {
+    return [];
+  }
+
+  const stateCode = normalizeStateCode(input.stateCode);
+  const metroCityId = input.metroCityId?.trim() || null;
+
+  return db.holidayCalendar.findMany({
+    where: {
+      isActive: true,
+      countryId: input.countryId,
+      OR: [
+        { scopeType: "COUNTRY" },
+        ...(stateCode ? [{ scopeType: "STATE" as const, stateCode }] : []),
+        ...(metroCityId ? [{ scopeType: "CITY" as const, metroCityId }] : []),
+      ],
+    },
+    include: { entries: true },
+    orderBy: [{ priority: "asc" }, { createdAt: "asc" }],
+  });
+}
+
+export function getCalendarHolidayStrings(
+  periodStart: Date,
+  periodEnd: Date,
+  countryCode?: string | null,
+  federalState?: string | null,
+  metroCityName?: string | null,
+): string[] {
+  return getCalendarHolidays(
+    periodStart,
+    periodEnd,
+    countryCode,
+    federalState,
+    metroCityName,
+  ).map((holiday) => holiday.date);
+}
+
+export function getCalendarHolidays(
+  periodStart: Date,
+  periodEnd: Date,
+  countryCode?: string | null,
+  federalState?: string | null,
+  metroCityName?: string | null,
+): CalendarHoliday[] {
+  const startYear = periodStart.getUTCFullYear();
+  const endYear = periodEnd.getUTCFullYear();
+  const holidays = new Map<string, CalendarHoliday>();
+
+  if (countryCode === "DE") {
+    for (let year = startYear; year <= endYear; year += 1) {
+      for (const holiday of getPublicHolidays(year, federalState ?? undefined)) {
+        if (holiday.date >= toIsoDate(periodStart) && holiday.date <= toIsoDate(periodEnd)) {
+          holidays.set(holiday.date, {
+            date: holiday.date,
+            name: holiday.name,
+            scope: holiday.federal ? "COUNTRY" : "STATE",
+          });
+        }
+      }
+    }
+  }
+
+  const normalizedCityName = normalizeCityName(metroCityName);
+  if (countryCode && normalizedCityName) {
+    for (const rule of CITY_HOLIDAY_RULES) {
+      if (
+        rule.countryCode === countryCode
+        && normalizeCityName(rule.cityName) === normalizedCityName
+      ) {
+        for (let year = startYear; year <= endYear; year += 1) {
+          for (const holidayDate of rule.resolveDates(year)) {
+            if (holidayDate >= toIsoDate(periodStart) && holidayDate <= toIsoDate(periodEnd)) {
+              holidays.set(holidayDate, {
+                date: holidayDate,
+                name: "Augsburger Friedensfest",
+                scope: "CITY",
+              });
+            }
+          }
+        }
+      }
+    }
+  }
+
+  return [...holidays.values()].sort((left, right) => left.date.localeCompare(right.date));
+}
+
+export async function getResolvedCalendarHolidays(
+  db: HolidayResolverDb,
+  input: {
+    periodStart: Date;
+    periodEnd: Date;
+    countryId?: string | null | undefined;
+    countryCode?: string | null | undefined;
+    federalState?: string | null | undefined;
+    metroCityId?: string | null | undefined;
+    metroCityName?: string | null | undefined;
+  },
+): Promise<ResolvedHoliday[]> {
+  let countryCode = input.countryCode ?? null;
+  if (!countryCode && input.countryId && typeof db.country?.findUnique === "function") {
+    const country = await db.country.findUnique({
+      where: { id: input.countryId },
+      select: { code: true },
+    });
+    countryCode = country?.code ?? null;
+  }
+
+  let metroCityName = input.metroCityName ?? null;
+  if (!metroCityName && input.metroCityId && typeof db.metroCity?.findUnique === "function") {
+    const metroCity = await db.metroCity.findUnique({
+      where: { id: input.metroCityId },
+      select: { name: true },
+    });
+    metroCityName = metroCity?.name ?? null;
+  }
+
+  const builtIn = getCalendarHolidays(
+    input.periodStart,
+    input.periodEnd,
+    countryCode,
+    input.federalState,
+    metroCityName,
+  );
+  const calendars = await loadScopedHolidayCalendars(db, {
+    countryId: input.countryId,
+    stateCode: input.federalState,
+    metroCityId: input.metroCityId,
+  });
+  const custom = resolveCalendarEntries(calendars, input.periodStart, input.periodEnd);
+
+  return mergeResolvedHolidays(builtIn, custom);
+}
+
+export async function getResolvedCalendarHolidayStrings(
+  db: HolidayResolverDb,
+  input: {
+    periodStart: Date;
+    periodEnd: Date;
+    countryId?: string | null | undefined;
+    countryCode?: string | null | undefined;
+    federalState?: string | null | undefined;
+    metroCityId?: string | null | undefined;
+    metroCityName?: string | null | undefined;
+  },
+): Promise<string[]> {
+  const holidays = await getResolvedCalendarHolidays(db, input);
+  return holidays.map((holiday) => holiday.date);
+}
+
+export function collectHolidayAvailability(
+  input: HolidayAvailabilityInput,
+): HolidayAvailabilityResult {
+  const periodStartIso = toIsoDate(input.periodStart);
+  const periodEndIso = toIsoDate(input.periodEnd);
+  const publicHolidaySet = new Set(
+    input.resolvedHolidayStrings
+      ? input.resolvedHolidayStrings.filter((date) => date >= periodStartIso && date <= periodEndIso)
+      : getCalendarHolidayStrings(
+        input.periodStart,
+        input.periodEnd,
+        input.countryCode,
+        input.federalState,
+        input.metroCityName,
+      ),
+  );
+  const absenceDateSet = new Set<string>();
+  const absenceDayMap = new Map<string, AbsenceDay>();
+
+  for (const isoDate of publicHolidaySet) {
+    absenceDayMap.set(isoDate, {
+      date: new Date(`${isoDate}T00:00:00.000Z`),
+      type: "PUBLIC_HOLIDAY",
+    });
+  }
+
+  for (const vacation of input.vacations) {
+    if (vacation.type !== "PUBLIC_HOLIDAY") {
+      continue;
+    }
+
+    const overlapStart = new Date(
+      Math.max(vacation.startDate.getTime(), input.periodStart.getTime()),
+    );
+    const overlapEnd = new Date(
+      Math.min(vacation.endDate.getTime(), input.periodEnd.getTime()),
+    );
+
+    if (overlapStart > overlapEnd) {
+      continue;
+    }
+
+    const cursor = new Date(overlapStart);
+    cursor.setUTCHours(0, 0, 0, 0);
+    const end = new Date(overlapEnd);
+    end.setUTCHours(0, 0, 0, 0);
+
+    while (cursor <= end) {
+      const isoDate = toIsoDate(cursor);
+      publicHolidaySet.add(isoDate);
+      absenceDayMap.set(isoDate, {
+        date: new Date(cursor),
+        type: "PUBLIC_HOLIDAY",
+        ...(vacation.isHalfDay ? { isHalfDay: true } : {}),
+      });
+
+      cursor.setUTCDate(cursor.getUTCDate() + 1);
+    }
+  }
+
+  for (const vacation of input.vacations) {
+    if (vacation.type === "PUBLIC_HOLIDAY") {
+      continue;
+    }
+
+    const overlapStart = new Date(
+      Math.max(vacation.startDate.getTime(), input.periodStart.getTime()),
+    );
+    const overlapEnd = new Date(
+      Math.min(vacation.endDate.getTime(), input.periodEnd.getTime()),
+    );
+
+    if (overlapStart > overlapEnd) {
+      continue;
+    }
+
+    const cursor = new Date(overlapStart);
+    cursor.setUTCHours(0, 0, 0, 0);
+    const end = new Date(overlapEnd);
+    end.setUTCHours(0, 0, 0, 0);
+
+    const triggerType = vacation.type === "SICK" ? "SICK" : "VACATION";
+
+    while (cursor <= end) {
+      const isoDate = toIsoDate(cursor);
+      if (!publicHolidaySet.has(isoDate)) {
+        absenceDateSet.add(isoDate);
+        absenceDayMap.set(isoDate, {
+          date: new Date(cursor),
+          type: triggerType,
+          ...(vacation.isHalfDay ? { isHalfDay: true } : {}),
+        });
+      }
+
+      cursor.setUTCDate(cursor.getUTCDate() + 1);
+    }
+  }
+
+  return {
+    absenceDateStrings: [...absenceDateSet].sort(),
+    publicHolidayStrings: [...publicHolidaySet].sort(),
+    absenceDays: [...absenceDayMap.values()],
+  };
+}
diff --git a/packages/api/src/lib/logger.ts b/packages/api/src/lib/logger.ts
index 9552a7b..aaa084a 100644
--- a/packages/api/src/lib/logger.ts
+++ b/packages/api/src/lib/logger.ts
@@ -3,23 +3,24 @@ import pino from "pino";
 const isProduction = process.env["NODE_ENV"] === "production";
 
 const LOG_LEVEL = process.env["LOG_LEVEL"] ?? "info";
+const devDestination = pino.destination({ dest: 1, sync: true });
 
-export const logger = pino({
-  level: LOG_LEVEL,
-  base: { service: "capakraken-api" },
-  ...(isProduction
-    ? {}
-    : {
-        transport: {
-          target: "pino/file",
-          options: { destination: 1 }, // stdout
-        },
+export const logger = isProduction
+  ? pino({
+      level: LOG_LEVEL,
+      base: { service: "capakraken-api" },
+    })
+  : pino(
+      {
+        level: LOG_LEVEL,
+        base: { service: "capakraken-api" },
         formatters: {
           level(label: string) {
             return { level: label };
           },
         },
-      }),
-});
+      },
+      devDestination,
+    );
 
 export type Logger = typeof logger;
diff --git a/packages/api/src/lib/resource-capacity.ts b/packages/api/src/lib/resource-capacity.ts
new file mode 100644
index 0000000..5995ba0
--- /dev/null
+++ b/packages/api/src/lib/resource-capacity.ts
@@ -0,0 +1,439 @@
+import { VacationStatus } from "@capakraken/db";
+import { getPublicHolidays, type WeekdayAvailability } from "@capakraken/shared";
+
+type CalendarScope = "COUNTRY" | "STATE" | "CITY";
+
+type HolidayCalendarEntryRecord = {
+  date: Date;
+  isRecurringAnnual: boolean;
+};
+
+type HolidayCalendarRecord = {
+  entries: HolidayCalendarEntryRecord[];
+};
+
+type VacationRecord = {
+  resourceId: string;
+  startDate: Date;
+  endDate: Date;
+  type: string;
+  isHalfDay: boolean;
+};
+
+export type ResourceCapacityProfile = {
+  id: string;
+  availability: WeekdayAvailability;
+  countryId: string | null | undefined;
+  countryCode: string | null | undefined;
+  federalState: string | null | undefined;
+  metroCityId: string | null | undefined;
+  metroCityName: string | null | undefined;
+};
+
+export type ResourceDailyAvailabilityContext = {
+  absenceFractionsByDate: Map<string, number>;
+  holidayDates: Set<string>;
+  vacationFractionsByDate: Map<string, number>;
+};
+
+type ResourceCapacityDbClient = {
+  holidayCalendar?: {
+    findMany: (args: {
+      where: Record<string, unknown>;
+      include: { entries: true };
+      orderBy: Array<Record<string, "asc" | "desc">>;
+    }) => Promise<unknown[]>;
+  };
+  vacation?: {
+    findMany: (args: {
+      where: Record<string, unknown>;
+      select: Record<string, boolean | Record<string, boolean>>;
+    }) => Promise<unknown[]>;
+  };
+};
+
+const DAY_KEYS: (keyof WeekdayAvailability)[] = [
+  "sunday",
+  "monday",
+  "tuesday",
+  "wednesday",
+  "thursday",
+  "friday",
+  "saturday",
+];
+
+const CITY_HOLIDAY_RULES: Array<{
+  countryCode: string;
+  cityName: string;
+  resolveDates: (year: number) => string[];
+}> = [
+  {
+    countryCode: "DE",
+    cityName: "Augsburg",
+    resolveDates: (year) => [`${year}-08-08`],
+  },
+];
+
+function toIsoDate(value: Date): string {
+  return value.toISOString().slice(0, 10);
+}
+
+function normalizeCityName(cityName?: string | null): string | null {
+  const normalized = cityName?.trim().toLowerCase();
+  return normalized && normalized.length > 0 ? normalized : null;
+}
+
+function normalizeStateCode(stateCode?: string | null): string | null {
+  const normalized = stateCode?.trim().toUpperCase();
+  return normalized && normalized.length > 0 ? normalized : null;
+}
+
+export function getAvailabilityHoursForDate(
+  availability: WeekdayAvailability,
+  date: Date,
+): number {
+  const key = DAY_KEYS[date.getUTCDay()];
+  return key ? (availability[key] ?? 0) : 0;
+}
+
+function listBuiltinHolidayDates(input: {
+  periodStart: Date;
+  periodEnd: Date;
+  countryCode: string | null | undefined;
+  federalState: string | null | undefined;
+  metroCityName: string | null | undefined;
+}): Set<string> {
+  const dates = new Set<string>();
+  const startIso = toIsoDate(input.periodStart);
+  const endIso = toIsoDate(input.periodEnd);
+  const startYear = input.periodStart.getUTCFullYear();
+  const endYear = input.periodEnd.getUTCFullYear();
+
+  if (input.countryCode === "DE") {
+    for (let year = startYear; year <= endYear; year += 1) {
+      for (const holiday of getPublicHolidays(year, input.federalState ?? undefined)) {
+        if (holiday.date >= startIso && holiday.date <= endIso) {
+          dates.add(holiday.date);
+        }
+      }
+    }
+  }
+
+  const normalizedCityName = normalizeCityName(input.metroCityName);
+  if (input.countryCode && normalizedCityName) {
+    for (const rule of CITY_HOLIDAY_RULES) {
+      if (
+        rule.countryCode === input.countryCode
+        && normalizeCityName(rule.cityName) === normalizedCityName
+      ) {
+        for (let year = startYear; year <= endYear; year += 1) {
+          for (const date of rule.resolveDates(year)) {
+            if (date >= startIso && date <= endIso) {
+              dates.add(date);
+            }
+          }
+        }
+      }
+    }
+  }
+
+  return dates;
+}
+
+function resolveCalendarEntryDates(
+  calendars: HolidayCalendarRecord[],
+  periodStart: Date,
+  periodEnd: Date,
+): Set<string> {
+  const dates = new Set<string>();
+  const startIso = toIsoDate(periodStart);
+  const endIso = toIsoDate(periodEnd);
+  const startYear = periodStart.getUTCFullYear();
+  const endYear = periodEnd.getUTCFullYear();
+
+  for (const calendar of calendars) {
+    for (const entry of calendar.entries) {
+      const baseDate = new Date(entry.date);
+      for (let year = startYear; year <= endYear; year += 1) {
+        const effectiveDate = entry.isRecurringAnnual
+          ? new Date(Date.UTC(year, baseDate.getUTCMonth(), baseDate.getUTCDate()))
+          : baseDate;
+        const isoDate = toIsoDate(effectiveDate);
+        if (isoDate >= startIso && isoDate <= endIso) {
+          dates.add(isoDate);
+        }
+        if (!entry.isRecurringAnnual) {
+          break;
+        }
+      }
+    }
+  }
+
+  return dates;
+}
+
+async function loadCustomHolidayDates(
+  db: ResourceCapacityDbClient,
+  input: {
+    periodStart: Date;
+    periodEnd: Date;
+    countryId: string | null | undefined;
+    federalState: string | null | undefined;
+    metroCityId: string | null | undefined;
+  },
+): Promise<Set<string>> {
+  if (!input.countryId || typeof db.holidayCalendar?.findMany !== "function") {
+    return new Set();
+  }
+
+  const stateCode = normalizeStateCode(input.federalState);
+  const metroCityId = input.metroCityId?.trim() || null;
+  const calendars = await db.holidayCalendar.findMany({
+    where: {
+      isActive: true,
+      countryId: input.countryId,
+      OR: [
+        { scopeType: "COUNTRY" as CalendarScope },
+        ...(stateCode ? [{ scopeType: "STATE" as CalendarScope, stateCode }] : []),
+        ...(metroCityId ? [{ scopeType: "CITY" as CalendarScope, metroCityId }] : []),
+      ],
+    },
+    include: { entries: true },
+    orderBy: [{ priority: "asc" }, { createdAt: "asc" }],
+  });
+
+  return resolveCalendarEntryDates(
+    calendars as HolidayCalendarRecord[],
+    input.periodStart,
+    input.periodEnd,
+  );
+}
+
+function buildProfileKey(profile: ResourceCapacityProfile): string {
+  return JSON.stringify({
+    countryId: profile.countryId ?? null,
+    countryCode: profile.countryCode ?? null,
+    federalState: profile.federalState ?? null,
+    metroCityId: profile.metroCityId ?? null,
+    metroCityName: profile.metroCityName ?? null,
+  });
+}
+
+export async function loadResourceDailyAvailabilityContexts(
+  db: ResourceCapacityDbClient,
+  resources: ResourceCapacityProfile[],
+  periodStart: Date,
+  periodEnd: Date,
+): Promise<Map<string, ResourceDailyAvailabilityContext>> {
+  const profileHolidayCache = new Map<string, Promise<Set<string>>>();
+  const resourceIds = resources.map((resource) => resource.id);
+
+  const vacations = resourceIds.length > 0 && typeof db.vacation?.findMany === "function"
+    ? await db.vacation.findMany({
+      where: {
+        resourceId: { in: resourceIds },
+        status: VacationStatus.APPROVED,
+        startDate: { lte: periodEnd },
+        endDate: { gte: periodStart },
+      },
+      select: {
+        resourceId: true,
+        startDate: true,
+        endDate: true,
+        type: true,
+        isHalfDay: true,
+      },
+    })
+    : [];
+
+  const vacationsByResourceId = new Map<string, VacationRecord[]>();
+  for (const vacation of vacations as VacationRecord[]) {
+    const items = vacationsByResourceId.get(vacation.resourceId) ?? [];
+    items.push(vacation);
+    vacationsByResourceId.set(vacation.resourceId, items);
+  }
+
+  const contexts = new Map<string, ResourceDailyAvailabilityContext>();
+
+  for (const resource of resources) {
+    const profileKey = buildProfileKey(resource);
+    const holidayPromise = profileHolidayCache.get(profileKey)
+      ?? (async () => {
+        const builtin = listBuiltinHolidayDates({
+          periodStart,
+          periodEnd,
+          countryCode: resource.countryCode,
+          federalState: resource.federalState,
+          metroCityName: resource.metroCityName,
+        });
+        const custom = await loadCustomHolidayDates(db, {
+          periodStart,
+          periodEnd,
+          countryId: resource.countryId,
+          federalState: resource.federalState,
+          metroCityId: resource.metroCityId,
+        });
+        return new Set([...builtin, ...custom]);
+      })();
+
+    if (!profileHolidayCache.has(profileKey)) {
+      profileHolidayCache.set(profileKey, holidayPromise);
+    }
+
+    const holidayDates = new Set(await holidayPromise);
+    const absenceFractionsByDate = new Map<string, number>();
+    const vacationFractionsByDate = new Map<string, number>();
+    const resourceVacations = vacationsByResourceId.get(resource.id) ?? [];
+
+    for (const vacation of resourceVacations) {
+      const overlapStart = new Date(Math.max(vacation.startDate.getTime(), periodStart.getTime()));
+      const overlapEnd = new Date(Math.min(vacation.endDate.getTime(), periodEnd.getTime()));
+      if (overlapStart > overlapEnd) {
+        continue;
+      }
+
+      const cursor = new Date(overlapStart);
+      cursor.setUTCHours(0, 0, 0, 0);
+      const end = new Date(overlapEnd);
+      end.setUTCHours(0, 0, 0, 0);
+
+      while (cursor <= end) {
+        const isoDate = toIsoDate(cursor);
+        const fraction = vacation.isHalfDay ? 0.5 : 1;
+
+        if (vacation.type === "PUBLIC_HOLIDAY") {
+          holidayDates.add(isoDate);
+        }
+
+        if (vacation.type !== "PUBLIC_HOLIDAY") {
+          const existingVacation = vacationFractionsByDate.get(isoDate) ?? 0;
+          vacationFractionsByDate.set(isoDate, Math.max(existingVacation, fraction));
+        }
+
+        const existing = absenceFractionsByDate.get(isoDate) ?? 0;
+        if (vacation.type === "PUBLIC_HOLIDAY" || !holidayDates.has(isoDate)) {
+          absenceFractionsByDate.set(isoDate, Math.max(existing, fraction));
+        }
+
+        cursor.setUTCDate(cursor.getUTCDate() + 1);
+      }
+    }
+
+    for (const isoDate of holidayDates) {
+      const existing = absenceFractionsByDate.get(isoDate) ?? 0;
+      absenceFractionsByDate.set(isoDate, Math.max(existing, 1));
+    }
+
+    contexts.set(resource.id, {
+      absenceFractionsByDate,
+      holidayDates,
+      vacationFractionsByDate,
+    });
+  }
+
+  return contexts;
+}
+
+function calculateDayAvailabilityFraction(
+  context: ResourceDailyAvailabilityContext | undefined,
+  isoDate: string,
+): number {
+  const fraction = context?.absenceFractionsByDate.get(isoDate) ?? 0;
+  return Math.max(0, 1 - fraction);
+}
+
+export function calculateEffectiveDayAvailability(input: {
+  availability: WeekdayAvailability;
+  date: Date;
+  context: ResourceDailyAvailabilityContext | undefined;
+}): number {
+  const baseHours = getAvailabilityHoursForDate(input.availability, input.date);
+  if (baseHours <= 0) {
+    return 0;
+  }
+
+  return baseHours * calculateDayAvailabilityFraction(input.context, toIsoDate(input.date));
+}
+
+export function calculateEffectiveAvailableHours(input: {
+  availability: WeekdayAvailability;
+  periodStart: Date;
+  periodEnd: Date;
+  context: ResourceDailyAvailabilityContext | undefined;
+}): number {
+  let hours = 0;
+  const cursor = new Date(input.periodStart);
+  cursor.setUTCHours(0, 0, 0, 0);
+  const end = new Date(input.periodEnd);
+  end.setUTCHours(0, 0, 0, 0);
+
+  while (cursor <= end) {
+    hours += calculateEffectiveDayAvailability({
+      availability: input.availability,
+      date: cursor,
+      context: input.context,
+    });
+    cursor.setUTCDate(cursor.getUTCDate() + 1);
+  }
+
+  return hours;
+}
+
+export function countEffectiveWorkingDays(input: {
+  availability: WeekdayAvailability;
+  periodStart: Date;
+  periodEnd: Date;
+  context: ResourceDailyAvailabilityContext | undefined;
+}): number {
+  let days = 0;
+  const cursor = new Date(input.periodStart);
+  cursor.setUTCHours(0, 0, 0, 0);
+  const end = new Date(input.periodEnd);
+  end.setUTCHours(0, 0, 0, 0);
+
+  while (cursor <= end) {
+    if (calculateEffectiveDayAvailability({
+      availability: input.availability,
+      date: cursor,
+      context: input.context,
+    }) > 0) {
+      days += 1;
+    }
+    cursor.setUTCDate(cursor.getUTCDate() + 1);
+  }
+
+  return days;
+}
+
+export function calculateEffectiveBookedHours(input: {
+  availability: WeekdayAvailability;
+  startDate: Date;
+  endDate: Date;
+  hoursPerDay: number;
+  periodStart: Date;
+  periodEnd: Date;
+  context: ResourceDailyAvailabilityContext | undefined;
+}): number {
+  const overlapStart = new Date(Math.max(input.startDate.getTime(), input.periodStart.getTime()));
+  const overlapEnd = new Date(Math.min(input.endDate.getTime(), input.periodEnd.getTime()));
+
+  if (overlapStart > overlapEnd) {
+    return 0;
+  }
+
+  let hours = 0;
+  const cursor = new Date(overlapStart);
+  cursor.setUTCHours(0, 0, 0, 0);
+  const end = new Date(overlapEnd);
+  end.setUTCHours(0, 0, 0, 0);
+
+  while (cursor <= end) {
+    const dayBaseHours = getAvailabilityHoursForDate(input.availability, cursor);
+    if (dayBaseHours > 0) {
+      hours += input.hoursPerDay * calculateDayAvailabilityFraction(input.context, toIsoDate(cursor));
+    }
+    cursor.setUTCDate(cursor.getUTCDate() + 1);
+  }
+
+  return hours;
+}
diff --git a/packages/api/src/lib/resource-holiday-context.ts b/packages/api/src/lib/resource-holiday-context.ts
new file mode 100644
index 0000000..690033e
--- /dev/null
+++ b/packages/api/src/lib/resource-holiday-context.ts
@@ -0,0 +1,102 @@
+import { VacationStatus, VacationType } from "@capakraken/db";
+import { getResolvedCalendarHolidayStrings, toIsoDate } from "./holiday-availability.js";
+
+type ResourceHolidayContextDb = {
+  resource: {
+    findUnique: (args: any) => any;
+  };
+  country?: {
+    findUnique: (args: any) => any;
+  };
+  metroCity?: {
+    findUnique: (args: any) => any;
+  };
+  holidayCalendar?: {
+    findMany: (args: any) => any;
+  };
+  vacation: {
+    findMany: (args: any) => any;
+  };
+};
+
+export type ResourceHolidayContext = {
+  countryId?: string | null;
+  countryCode?: string | null;
+  countryName?: string | null;
+  federalState?: string | null;
+  metroCityId?: string | null;
+  metroCityName?: string | null;
+  calendarHolidayStrings: string[];
+  publicHolidayStrings: string[];
+};
+
+function clampToDay(value: Date): Date {
+  const date = new Date(value);
+  date.setUTCHours(0, 0, 0, 0);
+  return date;
+}
+
+export async function loadResourceHolidayContext(
+  db: ResourceHolidayContextDb,
+  resourceId: string,
+  periodStart: Date,
+  periodEnd: Date,
+): Promise<ResourceHolidayContext> {
+  const resource = typeof db.resource?.findUnique === "function"
+    ? await db.resource.findUnique({
+        where: { id: resourceId },
+        select: {
+          federalState: true,
+          countryId: true,
+          metroCityId: true,
+          country: { select: { code: true, name: true } },
+          metroCity: { select: { name: true } },
+        },
+      })
+    : null;
+
+  const holidayVacations = typeof db.vacation?.findMany === "function"
+    ? await db.vacation.findMany({
+        where: {
+          resourceId,
+          type: VacationType.PUBLIC_HOLIDAY,
+          status: VacationStatus.APPROVED,
+          startDate: { lte: periodEnd },
+          endDate: { gte: periodStart },
+        },
+        select: { startDate: true, endDate: true },
+      })
+    : [];
+
+  const calendarHolidayStrings = await getResolvedCalendarHolidayStrings(db, {
+    periodStart,
+    periodEnd,
+    countryId: resource?.countryId ?? null,
+    countryCode: resource?.country?.code ?? null,
+    federalState: resource?.federalState ?? null,
+    metroCityId: resource?.metroCityId ?? null,
+    metroCityName: resource?.metroCity?.name ?? null,
+  });
+  const publicHolidayStrings = new Set<string>();
+
+  for (const holiday of holidayVacations) {
+    const cursor = clampToDay(new Date(Math.max(holiday.startDate.getTime(), periodStart.getTime())));
+    const end = clampToDay(new Date(Math.min(holiday.endDate.getTime(), periodEnd.getTime())));
+
+    while (cursor <= end) {
+      publicHolidayStrings.add(toIsoDate(cursor));
+      cursor.setUTCDate(cursor.getUTCDate() + 1);
+    }
+  }
+
+  return {
+    countryId: resource?.countryId ?? null,
+    countryCode: resource?.country?.code ?? null,
+    countryName: resource?.country?.name ?? null,
+    federalState: resource?.federalState ?? null,
+    metroCityId: resource?.metroCityId ?? null,
+    metroCityName: resource?.metroCity?.name ?? null,
+    calendarHolidayStrings,
+    publicHolidayStrings: [...publicHolidayStrings].sort(),
+  };
+}
diff --git a/packages/api/src/lib/vacation-day-count.ts b/packages/api/src/lib/vacation-day-count.ts
new file mode 100644
index 0000000..43160b6
--- /dev/null
+++ b/packages/api/src/lib/vacation-day-count.ts
@@ -0,0 +1,112 @@
+import { getCalendarHolidayStrings, toIsoDate } from "./holiday-availability.js";
+
+type VacationSpan = {
+  startDate: Date;
+  endDate: Date;
+  isHalfDay: boolean;
+};
+
+type HolidayContext = {
+  countryCode?: string | null | undefined;
+  federalState?: string | null | undefined;
+  metroCityName?: string | null | undefined;
+  calendarHolidayStrings?: string[] | undefined;
+  publicHolidayStrings?: string[] | undefined;
+};
+
+type CountVacationChargeableDaysInput = HolidayContext & {
+  vacation: VacationSpan;
+  periodStart?: Date | undefined;
+  periodEnd?: Date | undefined;
+};
+
+function clampToDay(value: Date): Date {
+  const date = new Date(value);
+  date.setUTCHours(0, 0, 0, 0);
+  return date;
+}
+
+function getOverlapRange(
+  startDate: Date,
+  endDate: Date,
+  periodStart?: Date,
+  periodEnd?: Date,
+): { start: Date; end: Date } | null {
+  const startBoundary = clampToDay(periodStart ?? startDate);
+  const endBoundary = clampToDay(periodEnd ?? endDate);
+  const overlapStart = clampToDay(new Date(Math.max(startDate.getTime(), startBoundary.getTime())));
+  const overlapEnd = clampToDay(new Date(Math.min(endDate.getTime(), endBoundary.getTime())));
+
+  if (overlapStart > overlapEnd) {
+    return null;
+  }
+
+  return { start: overlapStart, end: overlapEnd };
+}
+
+export function countCalendarDaysInPeriod(
+  vacation: VacationSpan,
+  periodStart?: Date,
+  periodEnd?: Date,
+): number {
+  const overlap = getOverlapRange(vacation.startDate, vacation.endDate, periodStart, periodEnd);
+  if (!overlap) {
+    return 0;
+  }
+
+  if (vacation.isHalfDay) {
+    return 0.5;
+  }
+
+  const ms = overlap.end.getTime() - overlap.start.getTime();
+  return Math.round(ms / 86_400_000) + 1;
+}
+
+export function countVacationChargeableDays(
+  input: CountVacationChargeableDaysInput,
+): number {
+  const overlap = getOverlapRange(
+    input.vacation.startDate,
+    input.vacation.endDate,
+    input.periodStart,
+    input.periodEnd,
+  );
+  if (!overlap) {
+    return 0;
+  }
+
+  const holidaySet = new Set(
+    input.calendarHolidayStrings
+      ? input.calendarHolidayStrings.filter((isoDate) => isoDate >= toIsoDate(overlap.start) && isoDate <= toIsoDate(overlap.end))
+      : getCalendarHolidayStrings(
+          overlap.start,
+          overlap.end,
+          input.countryCode,
+          input.federalState,
+          input.metroCityName,
+        ),
+  );
+
+  for (const isoDate of input.publicHolidayStrings ?? []) {
+    if (isoDate >= toIsoDate(overlap.start) && isoDate <= toIsoDate(overlap.end)) {
+      holidaySet.add(isoDate);
+    }
+  }
+
+  if (input.vacation.isHalfDay) {
+    return holidaySet.has(toIsoDate(overlap.start)) ? 0 : 0.5;
+  }
+
+  let total = 0;
+  const cursor = new Date(overlap.start);
+
+  while (cursor <= overlap.end) {
+    if (!holidaySet.has(toIsoDate(cursor))) {
+      total += 1;
+    }
+
+    cursor.setUTCDate(cursor.getUTCDate() + 1);
+  }
+
+  return total;
+}
diff --git a/packages/api/src/router/allocation.ts b/packages/api/src/router/allocation.ts
index eeeaa82..c649d23 100644
--- a/packages/api/src/router/allocation.ts
+++ b/packages/api/src/router/allocation.ts
@@ -21,6 +21,7 @@ import {
   FillDemandRequirementSchema,
   FillOpenDemandByAllocationSchema,
   PermissionKey,
+  type WeekdayAvailability,
   UpdateAssignmentSchema,
   UpdateAllocationSchema,
   UpdateDemandRequirementSchema,
@@ -34,6 +35,13 @@ import { dispatchWebhooks } from "../lib/webhook-dispatcher.js";
 import { emitAllocationCreated, emitAllocationDeleted, emitAllocationUpdated, emitNotificationCreated } from "../sse/event-bus.js";
 import { generateAutoSuggestions } from "../lib/auto-staffing.js";
 import { invalidateDashboardCache } from "../lib/cache.js";
+import {
+  calculateEffectiveAvailableHours,
+  calculateEffectiveBookedHours,
+  calculateEffectiveDayAvailability,
+  countEffectiveWorkingDays,
+  loadResourceDailyAvailabilityContexts,
+} from "../lib/resource-capacity.js";
 import { createTRPCRouter, managerProcedure, protectedProcedure, requirePermission } from "../trpc.js";
 import { PROJECT_BRIEF_SELECT, RESOURCE_BRIEF_SELECT, ROLE_BRIEF_SELECT } from "../db/selects.js";
 
@@ -328,12 +336,26 @@ export const allocationRouter = createTRPCRouter({
         where: { id: input.resourceId },
         select: {
           id: true, displayName: true, eid: true, fte: true,
-          country: { select: { dailyWorkingHours: true } },
+          availability: true,
+          countryId: true,
+          federalState: true,
+          metroCityId: true,
+          country: { select: { dailyWorkingHours: true, code: true } },
+          metroCity: { select: { name: true } },
         },
       });
       if (!resource) throw new TRPCError({ code: "NOT_FOUND", message: "Resource not found" });
 
-      const dailyCapacity = (resource.country?.dailyWorkingHours ?? 8) * (resource.fte ?? 1);
+      const fallbackDailyHours = (resource.country?.dailyWorkingHours ?? 8) * (resource.fte ?? 1);
+      const availability = (resource.availability as WeekdayAvailability | null) ?? {
+        monday: fallbackDailyHours,
+        tuesday: fallbackDailyHours,
+        wednesday: fallbackDailyHours,
+        thursday: fallbackDailyHours,
+        friday: fallbackDailyHours,
+        saturday: 0,
+        sunday: 0,
+      };
 
       // Get existing assignments in the date range
       const existingAssignments = await ctx.db.assignment.findMany({
@@ -350,19 +372,29 @@ export const allocationRouter = createTRPCRouter({
         orderBy: { startDate: "asc" },
       });
 
-      // Get vacations in the date range
-      const vacations = await ctx.db.vacation.findMany({
-        where: {
-          resourceId: input.resourceId,
-          status: "APPROVED",
-          startDate: { lte: input.endDate },
-          endDate: { gte: input.startDate },
-        },
-        select: { startDate: true, endDate: true, isHalfDay: true },
-      });
+      const contexts = await loadResourceDailyAvailabilityContexts(
+        ctx.db,
+        [{
+          id: resource.id,
+          availability,
+          countryId: resource.countryId,
+          countryCode: resource.country?.code,
+          federalState: resource.federalState,
+          metroCityId: resource.metroCityId,
+          metroCityName: resource.metroCity?.name,
+        }],
+        input.startDate,
+        input.endDate,
+      );
+      const context = contexts.get(resource.id);
 
       // Calculate day-by-day availability
-      let totalWorkingDays = 0;
+      const totalWorkingDays = countEffectiveWorkingDays({
+        availability,
+        periodStart: input.startDate,
+        periodEnd: input.endDate,
+        context,
+      });
       let availableDays = 0;
       let conflictDays = 0;
       let partialDays = 0;
@@ -372,36 +404,27 @@ export const allocationRouter = createTRPCRouter({
       const d = new Date(input.startDate);
       const end = new Date(input.endDate);
       while (d <= end) {
-        const dow = d.getDay();
-        if (dow !== 0 && dow !== 6) {
-          totalWorkingDays++;
+        const effectiveDayCapacity = calculateEffectiveDayAvailability({
+          availability,
+          date: d,
+          context,
+        });
 
-          // Check vacation
-          const isVacation = vacations.some((v) => {
-            const vs = new Date(v.startDate); vs.setHours(0, 0, 0, 0);
-            const ve = new Date(v.endDate); ve.setHours(0, 0, 0, 0);
-            const dc = new Date(d); dc.setHours(0, 0, 0, 0);
-            return dc >= vs && dc <= ve;
-          });
-
-          if (isVacation) {
-            conflictDays++;
-            d.setDate(d.getDate() + 1);
-            continue;
-          }
-
-          // Sum existing hours on this day
+        if (effectiveDayCapacity > 0) {
           let bookedHours = 0;
           for (const a of existingAssignments) {
-            const as2 = new Date(a.startDate); as2.setHours(0, 0, 0, 0);
-            const ae = new Date(a.endDate); ae.setHours(0, 0, 0, 0);
-            const dc = new Date(d); dc.setHours(0, 0, 0, 0);
-            if (dc >= as2 && dc <= ae) {
-              bookedHours += a.hoursPerDay;
-            }
+            bookedHours += calculateEffectiveBookedHours({
+              availability,
+              startDate: a.startDate,
+              endDate: a.endDate,
+              hoursPerDay: a.hoursPerDay,
+              periodStart: d,
+              periodEnd: d,
+              context,
+            });
           }
 
-          const remainingCapacity = Math.max(0, dailyCapacity - bookedHours);
+          const remainingCapacity = Math.max(0, effectiveDayCapacity - bookedHours);
           if (remainingCapacity >= requestedHpd) {
             availableDays++;
             totalAvailableHours += requestedHpd;
@@ -416,6 +439,15 @@ export const allocationRouter = createTRPCRouter({
       }
 
       const totalRequestedHours = totalWorkingDays * requestedHpd;
+      const totalPeriodCapacity = calculateEffectiveAvailableHours({
+        availability,
+        periodStart: input.startDate,
+        periodEnd: input.endDate,
+        context,
+      });
+      const dailyCapacity = totalWorkingDays > 0
+        ? Math.round((totalPeriodCapacity / totalWorkingDays) * 10) / 10
+        : 0;
 
       return {
         resource: { id: resource.id, name: resource.displayName, eid: resource.eid },
diff --git a/packages/api/src/router/assistant-insights.ts b/packages/api/src/router/assistant-insights.ts
new file mode 100644
index 0000000..d9cc69c
--- /dev/null
+++ b/packages/api/src/router/assistant-insights.ts
@@ -0,0 +1,243 @@
+export interface AssistantInsightMetric {
+  label: string;
+  value: string;
+  tone?: "neutral" | "good" | "warn" | "danger" | "info";
+}
+
+export interface AssistantInsightSection {
+  title: string;
+  metrics: AssistantInsightMetric[];
+}
+
+export interface AssistantInsight {
+  kind: "chargeability" | "resource_match" | "holiday_region" | "resource_holidays";
+  title: string;
+  subtitle?: string;
+  metrics: AssistantInsightMetric[];
+  sections?: AssistantInsightSection[];
+}
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+  return typeof value === "object" && value !== null && !Array.isArray(value);
+}
+
+function asString(value: unknown): string | null {
+  return typeof value === "string" && value.trim() ? value : null;
+}
+
+function asNumber(value: unknown): number | null {
+  return typeof value === "number" && Number.isFinite(value) ? value : null;
+}
+
+function formatHours(value: unknown): string | null {
+  const num = asNumber(value);
+  return num == null ? null : `${num.toFixed(num % 1 === 0 ? 0 : 1)} h`;
+}
+
+function formatDays(value: unknown): string | null {
+  const num = asNumber(value);
+  return num == null ? null : `${num.toFixed(num % 1 === 0 ? 0 : 1)} d`;
+}
+
+function pushMetric(
+  metrics: AssistantInsightMetric[],
+  label: string,
+  value: string | null,
+  tone?: AssistantInsightMetric["tone"],
+) {
+  if (!value) return;
+  metrics.push({ label, value, ...(tone ? { tone } : {}) });
+}
+
+function createLocationLabel(locationContext: Record<string, unknown> | undefined): string | null {
+  if (!locationContext) return null;
+  const parts = [
+    asString(locationContext.metroCity),
+    asString(locationContext.federalState),
+    asString(locationContext.country),
+    asString(locationContext.countryCode),
+  ].filter(Boolean);
+  return parts.length > 0 ? parts.join(", ") : null;
+}
+
+function buildChargeabilityInsight(data: Record<string, unknown>): AssistantInsight | null {
+  const resource = asString(data.resource);
+  const month = asString(data.month);
+  if (!resource || !month) return null;
+
+  const holidaySummary = isRecord(data.holidaySummary) ? data.holidaySummary : undefined;
+  const absenceSummary = isRecord(data.absenceSummary) ? data.absenceSummary : undefined;
+  const capacityBreakdown = isRecord(data.capacityBreakdown) ? data.capacityBreakdown : undefined;
+  const locationContext = isRecord(data.locationContext) ? data.locationContext : undefined;
+  const chargeabilityPct = asNumber(data.chargeabilityPct);
+  const targetPct = asNumber(data.targetPct);
+
+  const metrics: AssistantInsightMetric[] = [];
+  pushMetric(metrics, "Chargeability", asString(data.chargeability), chargeabilityPct == null || targetPct == null
+    ? "info"
+    : chargeabilityPct >= targetPct ? "good" : "warn");
+  pushMetric(metrics, "Available", formatHours(data.availableHours));
+  pushMetric(metrics, "Booked", formatHours(data.bookedHours));
+  pushMetric(metrics, "Unassigned", formatHours(data.unassignedHours));
+  pushMetric(metrics, "Target", formatHours(data.targetHours));
+  pushMetric(metrics, "Holidays", formatDays(holidaySummary?.workdayCount ?? holidaySummary?.count));
+
+  const sections: AssistantInsightSection[] = [];
+
+  const basisMetrics: AssistantInsightMetric[] = [];
+  pushMetric(basisMetrics, "Location", createLocationLabel(locationContext), "info");
+  pushMetric(basisMetrics, "Base working days", formatDays(data.baseWorkingDays));
+  pushMetric(basisMetrics, "Effective working days", formatDays(data.workingDays));
+  pushMetric(basisMetrics, "Base capacity", formatHours(data.baseAvailableHours));
+  if (basisMetrics.length > 0) {
+    sections.push({ title: "Basis", metrics: basisMetrics });
+  }
+
+  const deductionMetrics: AssistantInsightMetric[] = [];
+  pushMetric(deductionMetrics, "Holiday deduction", formatHours(holidaySummary?.hoursDeduction ?? capacityBreakdown?.holidayHoursDeduction), "warn");
+  pushMetric(deductionMetrics, "Absence deduction", formatHours(absenceSummary?.hoursDeduction ?? capacityBreakdown?.absenceHoursDeduction), "warn");
+  pushMetric(deductionMetrics, "Absence days", formatDays(absenceSummary?.dayEquivalent));
+  if (deductionMetrics.length > 0) {
+    sections.push({ title: "Deductions", metrics: deductionMetrics });
+  }
+
+  return {
+    kind: "chargeability",
+    title: `${resource} · ${month}`,
+    subtitle: "Holiday-aware monthly capacity",
+    metrics,
+    ...(sections.length > 0 ? { sections } : {}),
+  };
+}
+
+function buildHolidayRegionInsight(data: Record<string, unknown>): AssistantInsight | null {
+  const locationContext = isRecord(data.locationContext) ? data.locationContext : undefined;
+  const periodStart = asString(data.periodStart);
+  const periodEnd = asString(data.periodEnd);
+
+  const metrics: AssistantInsightMetric[] = [];
+  pushMetric(metrics, "Region", createLocationLabel(locationContext), "info");
+  pushMetric(metrics, "Resolved holidays", asNumber(data.count)?.toString() ?? null);
+  pushMetric(metrics, "Period", periodStart && periodEnd ? `${periodStart} to ${periodEnd}` : null);
+
+  const summary = isRecord(data.summary) ? data.summary : undefined;
+  const scopeItems = Array.isArray(summary?.byScope) ? summary.byScope : [];
+  const scopeMetrics = scopeItems
+    .map((item) => {
+      if (!isRecord(item)) return null;
+      const scope = asString(item.scope);
+      const count = asNumber(item.count);
+      if (!scope || count == null) return null;
+      return { label: scope, value: String(count) } satisfies AssistantInsightMetric;
+    })
+    .filter((item): item is AssistantInsightMetric => item !== null);
+
+  return {
+    kind: "holiday_region",
+    title: createLocationLabel(locationContext) ?? "Regional holidays",
+    subtitle: "Resolved public holiday set",
+    metrics,
+    ...(scopeMetrics.length > 0 ? { sections: [{ title: "Scopes", metrics: scopeMetrics }] } : {}),
+  };
+}
+
+function buildResourceHolidayInsight(data: Record<string, unknown>): AssistantInsight | null {
+  const resource = isRecord(data.resource) ? data.resource : undefined;
+  const summary = isRecord(data.summary) ? data.summary : undefined;
+  const periodStart = asString(data.periodStart);
+  const periodEnd = asString(data.periodEnd);
+
+  const metrics: AssistantInsightMetric[] = [];
+  pushMetric(metrics, "Employee", asString(resource?.name) ?? asString(resource?.eid));
+  pushMetric(metrics, "Location", createLocationLabel(resource), "info");
+  pushMetric(metrics, "Resolved holidays", asNumber(data.count)?.toString() ?? null);
+  pushMetric(metrics, "Period", periodStart && periodEnd ? `${periodStart} to ${periodEnd}` : null);
+
+  const scopeItems = Array.isArray(summary?.byScope) ? summary.byScope : [];
+  const scopeMetrics = scopeItems
+    .map((item) => {
+      if (!isRecord(item)) return null;
+      const scope = asString(item.scope);
+      const count = asNumber(item.count);
+      if (!scope || count == null) return null;
+      return { label: scope, value: String(count) } satisfies AssistantInsightMetric;
+    })
+    .filter((item): item is AssistantInsightMetric => item !== null);
+
+  return {
+    kind: "resource_holidays",
+    title: `${asString(resource?.name) ?? "Resource"} holidays`,
+    subtitle: "Location-specific holiday resolution",
+    metrics,
+    ...(scopeMetrics.length > 0 ? { sections: [{ title: "Scopes", metrics: scopeMetrics }] } : {}),
+  };
+}
+
+function buildResourceMatchInsight(data: Record<string, unknown>): AssistantInsight | null {
+  const project = isRecord(data.project) ? data.project : undefined;
+  const period = isRecord(data.period) ? data.period : undefined;
+  const bestMatch = isRecord(data.bestMatch) ? data.bestMatch : undefined;
+  if (!project || !period || !bestMatch) return null;
+
+  const remainingHours = asNumber(bestMatch.remainingHours);
+  const remainingHoursPerDay = asNumber(bestMatch.remainingHoursPerDay);
+  const lcr = asString(bestMatch.lcr);
+  const holidaySummary = isRecord(bestMatch.holidaySummary) ? bestMatch.holidaySummary : undefined;
+  const absenceSummary = isRecord(bestMatch.absenceSummary) ? bestMatch.absenceSummary : undefined;
+  const capacityBreakdown = isRecord(bestMatch.capacityBreakdown) ? bestMatch.capacityBreakdown : undefined;
+
+  const metrics: AssistantInsightMetric[] = [];
+  pushMetric(metrics, "Best match", asString(bestMatch.name) ?? asString(bestMatch.eid), "good");
+  pushMetric(metrics, "Project", asString(project.name) ?? asString(project.shortCode));
+  pushMetric(metrics, "Remaining", formatHours(remainingHours), remainingHours != null && remainingHours > 0 ? "good" : "warn");
+  pushMetric(metrics, "Per workday", formatHours(remainingHoursPerDay));
+  pushMetric(metrics, "LCR", lcr);
+  pushMetric(metrics, "Holiday deduction", formatHours(holidaySummary?.hoursDeduction), "warn");
+
+  const sections: AssistantInsightSection[] = [];
+
+  const profileMetrics: AssistantInsightMetric[] = [];
+  pushMetric(profileMetrics, "Role", asString(bestMatch.role));
+  pushMetric(profileMetrics, "Chapter", asString(bestMatch.chapter));
+  pushMetric(profileMetrics, "Location", createLocationLabel(bestMatch), "info");
+  pushMetric(profileMetrics, "Candidate pool", asNumber(data.candidateCount)?.toString() ?? null);
+  if (profileMetrics.length > 0) {
+    sections.push({ title: "Selection", metrics: profileMetrics });
+  }
+
+  const basisMetrics: AssistantInsightMetric[] = [];
+  pushMetric(basisMetrics, "Window", asString(period.startDate) && asString(period.endDate) ? `${asString(period.startDate)} to ${asString(period.endDate)}` : null);
+  pushMetric(basisMetrics, "Ranking", asString(period.rankingMode));
+  pushMetric(basisMetrics, "Min/day", formatHours(period.minHoursPerDay));
+  pushMetric(basisMetrics, "Base capacity", formatHours(capacityBreakdown?.baseAvailableHours ?? bestMatch.baseAvailableHours));
+  pushMetric(basisMetrics, "Effective capacity", formatHours(bestMatch.availableHours));
+  pushMetric(basisMetrics, "Absence deduction", formatHours(absenceSummary?.hoursDeduction ?? capacityBreakdown?.absenceHoursDeduction), "warn");
+  if (basisMetrics.length > 0) {
+    sections.push({ title: "Capacity basis", metrics: basisMetrics });
+  }
+
+  return {
+    kind: "resource_match",
+    title: `${asString(project.shortCode) ?? asString(project.name) ?? "Project"} staffing`,
+    subtitle: "Holiday-aware best-fit resource",
+    metrics,
+    ...(sections.length > 0 ? { sections } : {}),
+  };
+}
+
+export function buildAssistantInsight(toolName: string, data: unknown): AssistantInsight | null {
+  if (!isRecord(data)) return null;
+
+  switch (toolName) {
+    case "get_chargeability":
+      return buildChargeabilityInsight(data);
+    case "find_best_project_resource":
+      return buildResourceMatchInsight(data);
+    case "list_holidays_by_region":
+      return buildHolidayRegionInsight(data);
+    case "get_resource_holidays":
+      return buildResourceHolidayInsight(data);
+    default:
+      return null;
+  }
+}
diff --git a/packages/api/src/router/assistant-tools.ts b/packages/api/src/router/assistant-tools.ts
index def2c7d..ff0be07 100644
--- a/packages/api/src/router/assistant-tools.ts
+++ b/packages/api/src/router/assistant-tools.ts
@@ -4,13 +4,22 @@
  */
 
 import { prisma } from "@capakraken/db";
-import { calculateAllocation, checkDuplicateAssignment, countWorkingDays } from "@capakraken/engine/allocation";
+import { checkDuplicateAssignment } from "@capakraken/engine/allocation";
 import { computeBudgetStatus } from "@capakraken/engine";
-import type { PermissionKey } from "@capakraken/shared";
-import { parseTaskAction } from "@capakraken/shared";
+import { PermissionKey, parseTaskAction } from "@capakraken/shared";
+import type { WeekdayAvailability } from "@capakraken/shared";
+import { getDashboardBudgetForecast, getDashboardPeakTimes } from "@capakraken/application";
 import { createAiClient, createDalleClient, isAiConfigured, isDalleConfigured, loggedAiCall, parseAiError } from "../ai-client.js";
 import { getTaskAction } from "../lib/task-actions.js";
 import { fmtEur } from "../lib/format-utils.js";
+import { asHolidayResolverDb, getResolvedCalendarHolidays } from "../lib/holiday-availability.js";
+import {
+  countEffectiveWorkingDays,
+  calculateEffectiveAvailableHours,
+  calculateEffectiveBookedHours,
+  getAvailabilityHoursForDate,
+  loadResourceDailyAvailabilityContexts,
+} from "../lib/resource-capacity.js";
 import { resolveRecipients } from "../lib/notification-targeting.js";
 import {
   emitNotificationCreated,
@@ -35,7 +44,11 @@ const MUTATION_TOOLS = new Set([
   "create_org_unit", "update_org_unit",
   "send_broadcast", "create_task_for_user", "create_reminder",
   "update_task_status", "execute_task_action",
-  "create_comment", "resolve_comment",
+  "create_comment", "resolve_comment", "mark_notification_read",
+]);
+
+export const ADVANCED_ASSISTANT_TOOLS = new Set([
+  "find_best_project_resource",
 ]);
 
 // ─── Types ──────────────────────────────────────────────────────────────────
@@ -47,7 +60,7 @@ export type ToolContext = {
   permissions: Set<PermissionKey>;
 };
 
-interface ToolDef {
+export interface ToolDef {
   type: "function";
   function: {
     name: string;
@@ -71,6 +84,169 @@ function assertPermission(ctx: ToolContext, perm: PermissionKey): void {
   }
 }
 
+function createUtcDate(year: number, monthIndex: number, day: number): Date {
+  return new Date(Date.UTC(year, monthIndex, day));
+}
+
+function resolveHolidayPeriod(input: {
+  year?: number;
+  periodStart?: string;
+  periodEnd?: string;
+}): { year: number | null; periodStart: Date; periodEnd: Date } {
+  if (input.periodStart || input.periodEnd) {
+    if (!input.periodStart || !input.periodEnd) {
+      throw new Error("periodStart and periodEnd must both be provided when using a custom holiday range.");
+    }
+
+    const periodStart = new Date(`${input.periodStart}T00:00:00.000Z`);
+    const periodEnd = new Date(`${input.periodEnd}T00:00:00.000Z`);
+    if (Number.isNaN(periodStart.getTime())) {
+      throw new Error(`Invalid periodStart: ${input.periodStart}`);
+    }
+    if (Number.isNaN(periodEnd.getTime())) {
+      throw new Error(`Invalid periodEnd: ${input.periodEnd}`);
+    }
+    if (periodEnd < periodStart) {
+      throw new Error("periodEnd must be on or after periodStart.");
+    }
+
+    return { year: null, periodStart, periodEnd };
+  }
+
+  const year = input.year ?? new Date().getUTCFullYear();
+  return {
+    year,
+    periodStart: createUtcDate(year, 0, 1),
+    periodEnd: createUtcDate(year, 11, 31),
+  };
+}
+
+function formatResolvedHoliday(holiday: {
+  date: string;
+  name: string;
+  scope: string;
+  calendarName: string;
+  sourceType: string;
+}) {
+  return {
+    date: holiday.date,
+    name: holiday.name,
+    scope: holiday.scope,
+    calendarName: holiday.calendarName,
+    sourceType: holiday.sourceType,
+  };
+}
+
+function summarizeResolvedHolidays(holidays: Array<{
+  date: string;
+  name: string;
+  scope: string;
+  calendarName: string;
+  sourceType: string;
+}>) {
+  const byScope = new Map<string, number>();
+  const bySourceType = new Map<string, number>();
+  const byCalendar = new Map<string, number>();
+
+  for (const holiday of holidays) {
+    byScope.set(holiday.scope, (byScope.get(holiday.scope) ?? 0) + 1);
+    bySourceType.set(holiday.sourceType, (bySourceType.get(holiday.sourceType) ?? 0) + 1);
+    byCalendar.set(holiday.calendarName, (byCalendar.get(holiday.calendarName) ?? 0) + 1);
+  }
+
+  return {
+    byScope: [...byScope.entries()]
+      .sort(([left], [right]) => left.localeCompare(right))
+      .map(([scope, count]) => ({ scope, count })),
+    bySourceType: [...bySourceType.entries()]
+      .sort(([left], [right]) => left.localeCompare(right))
+      .map(([sourceType, count]) => ({ sourceType, count })),
+    byCalendar: [...byCalendar.entries()]
+      .sort(([left], [right]) => left.localeCompare(right))
+      .map(([calendarName, count]) => ({ calendarName, count })),
+  };
+}
+
+function round1(value: number): number {
+  return Math.round(value * 10) / 10;
+}
+
+function averagePerWorkingDay(totalHours: number, workingDays: number): number {
+  return workingDays > 0 ? round1(totalHours / workingDays) : 0;
+}
+
+function createDateRange(input: {
+  startDate?: string | undefined;
+  endDate?: string | undefined;
+  durationDays?: number | undefined;
+}): { startDate: Date; endDate: Date } {
+  const startDate = input.startDate
+    ? new Date(`${input.startDate}T00:00:00.000Z`)
+    : createUtcDate(new Date().getUTCFullYear(), new Date().getUTCMonth(), new Date().getUTCDate());
+
+  if (Number.isNaN(startDate.getTime())) {
+    throw new Error(`Invalid startDate: ${input.startDate}`);
+  }
+
+  const endDate = input.endDate
+    ? new Date(`${input.endDate}T00:00:00.000Z`)
+    : createUtcDate(
+        startDate.getUTCFullYear(),
+        startDate.getUTCMonth(),
+        startDate.getUTCDate() + Math.max((input.durationDays ?? 21) - 1, 0),
+      );
+
+  if (Number.isNaN(endDate.getTime())) {
+    throw new Error(`Invalid endDate: ${input.endDate}`);
+  }
+  if (endDate < startDate) {
+    throw new Error("endDate must be on or after startDate.");
+  }
+
+  return { startDate, endDate };
+}
+
+async function resolveProjectIdentifier(
+  identifier: string,
+  db: ToolContext["db"],
+): Promise<{
+  id: string;
+  name: string;
+  shortCode: string;
+  status: string;
+  responsiblePerson: string | null;
+} | { error: string }> {
+  const select = {
+    id: true,
+    name: true,
+    shortCode: true,
+    status: true,
+    responsiblePerson: true,
+  } as const;
+
+  let project = await db.project.findUnique({
+    where: { id: identifier },
+    select,
+  });
+  if (!project) {
+    project = await db.project.findUnique({
+      where: { shortCode: identifier },
+      select,
+    });
+  }
+  if (!project) {
+    project = await db.project.findFirst({
+      where: { name: { contains: identifier, mode: "insensitive" } },
+      select,
+    });
+  }
+  if (!project) {
+    return { error: `Project not found: ${identifier}` };
+  }
+
+  return project;
+}
+
 // ─── Tool Definitions ───────────────────────────────────────────────────────
 
 export const TOOL_DEFINITIONS: ToolDef[] = [
@@ -137,6 +313,27 @@ export const TOOL_DEFINITIONS: ToolDef[] = [
       },
     },
   },
+  {
+    type: "function",
+    function: {
+      name: "find_best_project_resource",
+      description: "Advanced assistant tool: find the best already-assigned resource on a project for a given period, ranked by remaining capacity or LCR. Holiday- and vacation-aware. Requires viewCosts and advanced assistant permissions.",
+      parameters: {
+        type: "object",
+        properties: {
+          projectIdentifier: { type: "string", description: "Project ID, short code, or project name." },
+          startDate: { type: "string", description: "Optional start date in YYYY-MM-DD. Default: today." },
+          endDate: { type: "string", description: "Optional end date in YYYY-MM-DD. If omitted, durationDays is used." },
+          durationDays: { type: "integer", description: "Optional duration in calendar days when endDate is omitted. Default: 21." },
+          minHoursPerDay: { type: "number", description: "Minimum remaining availability per effective working day. Default: 3." },
+          rankingMode: { type: "string", description: "Ranking mode: lowest_lcr, highest_remaining_hours_per_day, or highest_remaining_hours. Default: lowest_lcr." },
+          chapter: { type: "string", description: "Optional chapter filter for candidate resources." },
+          roleName: { type: "string", description: "Optional role filter for candidate resources." },
+        },
+        required: ["projectIdentifier"],
+      },
+    },
+  },
   {
     type: "function",
     function: {
@@ -200,6 +397,42 @@ export const TOOL_DEFINITIONS: ToolDef[] = [
       },
     },
   },
+  {
+    type: "function",
+    function: {
+      name: "list_holidays_by_region",
+      description: "List resolved public holidays for a country, federal state, and optionally a city in a given year or date range. Use this to compare regions such as Bayern vs Hamburg.",
+      parameters: {
+        type: "object",
+        properties: {
+          countryCode: { type: "string", description: "Country code such as DE, ES, US, IN." },
+          federalState: { type: "string", description: "Federal state / region code, e.g. BY, HH, NRW." },
+          metroCity: { type: "string", description: "Optional city name for local city-specific holidays, e.g. Augsburg." },
+          year: { type: "integer", description: "Full year, e.g. 2026. Default: current year." },
+          periodStart: { type: "string", description: "Optional start date in YYYY-MM-DD. Requires periodEnd." },
+          periodEnd: { type: "string", description: "Optional end date in YYYY-MM-DD. Requires periodStart." },
+        },
+        required: ["countryCode"],
+      },
+    },
+  },
+  {
+    type: "function",
+    function: {
+      name: "get_resource_holidays",
+      description: "List resolved public holidays for a specific resource based on that person's country, federal state, and city context.",
+      parameters: {
+        type: "object",
+        properties: {
+          identifier: { type: "string", description: "Resource ID, EID, or display name." },
+          year: { type: "integer", description: "Full year, e.g. 2026. Default: current year." },
+          periodStart: { type: "string", description: "Optional start date in YYYY-MM-DD. Requires periodEnd." },
+          periodEnd: { type: "string", description: "Optional end date in YYYY-MM-DD. Requires periodStart." },
+        },
+        required: ["identifier"],
+      },
+    },
+  },
   {
     type: "function",
     function: {
@@ -1724,6 +1957,300 @@ const executors = {
     };
   },
 
+  async find_best_project_resource(params: {
+    projectIdentifier: string;
+    startDate?: string;
+    endDate?: string;
+    durationDays?: number;
+    minHoursPerDay?: number;
+    rankingMode?: "lowest_lcr" | "highest_remaining_hours_per_day" | "highest_remaining_hours";
+    chapter?: string;
+    roleName?: string;
+  }, ctx: ToolContext) {
+    assertPermission(ctx, PermissionKey.USE_ASSISTANT_ADVANCED_TOOLS);
+    assertPermission(ctx, PermissionKey.VIEW_COSTS);
+
+    const project = await resolveProjectIdentifier(params.projectIdentifier, ctx.db);
+    if ("error" in project) {
+      return project;
+    }
+
+    const { startDate, endDate } = createDateRange({
+      startDate: params.startDate,
+      endDate: params.endDate,
+      durationDays: params.durationDays,
+    });
+    const minHoursPerDay = Math.max(params.minHoursPerDay ?? 3, 0);
+    const rankingMode = params.rankingMode ?? "lowest_lcr";
+
+    const projectAssignments = await ctx.db.assignment.findMany({
+      where: {
+        projectId: project.id,
+        status: { not: "CANCELLED" },
+        startDate: { lte: endDate },
+        endDate: { gte: startDate },
+        resource: {
+          isActive: true,
+          ...(params.chapter ? { chapter: { contains: params.chapter, mode: "insensitive" } } : {}),
+          ...(params.roleName ? { areaRole: { name: { contains: params.roleName, mode: "insensitive" } } } : {}),
+        },
+      },
+      select: {
+        resourceId: true,
+        hoursPerDay: true,
+        startDate: true,
+        endDate: true,
+        status: true,
+        resource: {
+          select: {
+            id: true,
+            eid: true,
+            displayName: true,
+            chapter: true,
+            lcrCents: true,
+            availability: true,
+            countryId: true,
+            federalState: true,
+            metroCityId: true,
+            country: { select: { code: true, name: true } },
+            metroCity: { select: { name: true } },
+            areaRole: { select: { name: true } },
+          },
+        },
+      },
+      orderBy: [{ resourceId: "asc" }, { startDate: "asc" }],
+    });
+
+    if (projectAssignments.length === 0) {
+      return {
+        project,
+        period: {
+          startDate: fmtDate(startDate),
+          endDate: fmtDate(endDate),
+          minHoursPerDay,
+          rankingMode,
+        },
+        candidateCount: 0,
+        candidates: [],
+        bestMatch: null,
+        note: "No active project resources matched the requested filters in the selected period.",
+      };
+    }
+
+    const resourcesById = new Map<string, (typeof projectAssignments)[number]["resource"]>();
+    const assignmentsOnProjectByResourceId = new Map<string, typeof projectAssignments>();
+    for (const assignment of projectAssignments) {
+      resourcesById.set(assignment.resourceId, assignment.resource);
+      const items = assignmentsOnProjectByResourceId.get(assignment.resourceId) ?? [];
+      items.push(assignment);
+      assignmentsOnProjectByResourceId.set(assignment.resourceId, items);
+    }
+
+    const resourceIds = [...resourcesById.keys()];
+    const overlappingAssignments = await ctx.db.assignment.findMany({
+      where: {
+        resourceId: { in: resourceIds },
+        status: { not: "CANCELLED" },
+        startDate: { lte: endDate },
+        endDate: { gte: startDate },
+      },
+      select: {
+        resourceId: true,
+        projectId: true,
+        hoursPerDay: true,
+        startDate: true,
+        endDate: true,
+        status: true,
+        project: { select: { name: true, shortCode: true } },
+      },
+      orderBy: [{ resourceId: "asc" }, { startDate: "asc" }],
+    });
+
+    const assignmentsByResourceId = new Map<string, typeof overlappingAssignments>();
+    for (const assignment of overlappingAssignments) {
+      const items = assignmentsByResourceId.get(assignment.resourceId) ?? [];
+      items.push(assignment);
+      assignmentsByResourceId.set(assignment.resourceId, items);
+    }
+
+    const resources = [...resourcesById.values()];
+    const contexts = await loadResourceDailyAvailabilityContexts(
+      ctx.db,
+      resources.map((resource) => ({
+        id: resource.id,
+        availability: resource.availability as unknown as WeekdayAvailability,
+        countryId: resource.countryId,
+        countryCode: resource.country?.code,
+        federalState: resource.federalState,
+        metroCityId: resource.metroCityId,
+        metroCityName: resource.metroCity?.name,
+      })),
+      startDate,
+      endDate,
+    );
+
+    const candidates = resources.map((resource) => {
+      const availability = resource.availability as unknown as WeekdayAvailability;
+      const context = contexts.get(resource.id);
+      const baseWorkingDays = countEffectiveWorkingDays({
+        availability,
+        periodStart: startDate,
+        periodEnd: endDate,
+        context: undefined,
+      });
+      const workingDays = countEffectiveWorkingDays({
+        availability,
+        periodStart: startDate,
+        periodEnd: endDate,
+        context,
+      });
+      const baseAvailableHours = calculateEffectiveAvailableHours({
+        availability,
+        periodStart: startDate,
+        periodEnd: endDate,
+        context: undefined,
+      });
+      const availableHours = calculateEffectiveAvailableHours({
+        availability,
+        periodStart: startDate,
+        periodEnd: endDate,
+        context,
+      });
+      const assignments = assignmentsByResourceId.get(resource.id) ?? [];
+      const bookedHours = assignments.reduce(
+        (sum, assignment) =>
+          sum + calculateEffectiveBookedHours({
+            availability,
+            startDate: assignment.startDate,
+            endDate: assignment.endDate,
+            hoursPerDay: assignment.hoursPerDay,
+            periodStart: startDate,
+            periodEnd: endDate,
+            context,
+          }),
+        0,
+      );
+      const projectHours = (assignmentsOnProjectByResourceId.get(resource.id) ?? []).reduce(
+        (sum, assignment) =>
+          sum + calculateEffectiveBookedHours({
+            availability,
+            startDate: assignment.startDate,
+            endDate: assignment.endDate,
+            hoursPerDay: assignment.hoursPerDay,
+            periodStart: startDate,
+            periodEnd: endDate,
+            context,
+          }),
+        0,
+      );
+      let excludedCapacityDays = 0;
+      for (const fraction of context?.absenceFractionsByDate.values() ?? []) {
+        excludedCapacityDays += fraction;
+      }
+      const holidayWorkdayCount = [...(context?.holidayDates ?? new Set<string>())].reduce((count, isoDate) => (
+        count + (getAvailabilityHoursForDate(availability, new Date(`${isoDate}T00:00:00.000Z`)) > 0 ? 1 : 0)
+      ), 0);
+      const holidayHoursDeduction = [...(context?.holidayDates ?? new Set<string>())].reduce((sum, isoDate) => (
+        sum + getAvailabilityHoursForDate(availability, new Date(`${isoDate}T00:00:00.000Z`))
+      ), 0);
+      let absenceDayEquivalent = 0;
+      let absenceHoursDeduction = 0;
+      for (const [isoDate, fraction] of context?.vacationFractionsByDate ?? []) {
+        const dayHours = getAvailabilityHoursForDate(availability, new Date(`${isoDate}T00:00:00.000Z`));
+        if (dayHours <= 0 || context?.holidayDates.has(isoDate)) {
+          continue;
+        }
+        absenceDayEquivalent += fraction;
+        absenceHoursDeduction += dayHours * fraction;
+      }
+
+      const remainingHours = Math.max(0, availableHours - bookedHours);
+      const remainingHoursPerDay = averagePerWorkingDay(remainingHours, workingDays);
+
+      return {
+        id: resource.id,
+        eid: resource.eid,
+        name: resource.displayName,
+        role: resource.areaRole?.name ?? null,
+        chapter: resource.chapter ?? null,
+        country: resource.country?.name ?? resource.country?.code ?? null,
+        countryCode: resource.country?.code ?? null,
+        federalState: resource.federalState ?? null,
+        metroCity: resource.metroCity?.name ?? null,
+        lcrCents: resource.lcrCents ?? null,
+        lcr: resource.lcrCents != null ? fmtEur(resource.lcrCents) : null,
+        baseWorkingDays: round1(baseWorkingDays),
+        workingDays,
+        excludedCapacityDays: round1(excludedCapacityDays),
+        baseAvailableHours: round1(baseAvailableHours),
+        availableHours: round1(availableHours),
+        bookedHours: round1(bookedHours),
+        remainingHours: round1(remainingHours),
+        remainingHoursPerDay,
+        projectHours: round1(projectHours),
+        assignmentCount: assignments.length,
+        holidaySummary: {
+          count: context?.holidayDates.size ?? 0,
+          workdayCount: holidayWorkdayCount,
+          hoursDeduction: round1(holidayHoursDeduction),
+          holidayDates: [...(context?.holidayDates ?? new Set<string>())].sort(),
+        },
+        absenceSummary: {
+          dayEquivalent: round1(absenceDayEquivalent),
+          hoursDeduction: round1(absenceHoursDeduction),
+        },
+        capacityBreakdown: {
+          formula: "baseAvailableHours - holidayHoursDeduction - absenceHoursDeduction = availableHours",
+          baseAvailableHours: round1(baseAvailableHours),
+          holidayHoursDeduction: round1(holidayHoursDeduction),
+          absenceHoursDeduction: round1(absenceHoursDeduction),
+          availableHours: round1(availableHours),
+        },
+      };
+    }).filter((candidate) => candidate.remainingHoursPerDay >= minHoursPerDay);
+
+    const compareCandidates = (left: (typeof candidates)[number], right: (typeof candidates)[number]): number => {
+      if (rankingMode === "highest_remaining_hours_per_day") {
+        return right.remainingHoursPerDay - left.remainingHoursPerDay
+          || right.remainingHours - left.remainingHours
+          || (left.lcrCents ?? Number.MAX_SAFE_INTEGER) - (right.lcrCents ?? Number.MAX_SAFE_INTEGER);
+      }
+      if (rankingMode === "highest_remaining_hours") {
+        return right.remainingHours - left.remainingHours
+          || right.remainingHoursPerDay - left.remainingHoursPerDay
+          || (left.lcrCents ?? Number.MAX_SAFE_INTEGER) - (right.lcrCents ?? Number.MAX_SAFE_INTEGER);
+      }
+      return (left.lcrCents ?? Number.MAX_SAFE_INTEGER) - (right.lcrCents ?? Number.MAX_SAFE_INTEGER)
+        || right.remainingHoursPerDay - left.remainingHoursPerDay
+        || right.remainingHours - left.remainingHours;
+    };
+
+    candidates.sort(compareCandidates);
+
+    return {
+      project: {
+        id: project.id,
+        name: project.name,
+        shortCode: project.shortCode,
+        status: project.status,
+        responsiblePerson: project.responsiblePerson,
+      },
+      period: {
+        startDate: fmtDate(startDate),
+        endDate: fmtDate(endDate),
+        minHoursPerDay,
+        rankingMode,
+      },
+      filters: {
+        chapter: params.chapter ?? null,
+        roleName: params.roleName ?? null,
+      },
+      candidateCount: candidates.length,
+      bestMatch: candidates[0] ?? null,
+      candidates,
+    };
+  },
+
   async list_allocations(params: {
     resourceId?: string; projectId?: string;
     resourceName?: string; projectCode?: string;
@@ -1909,6 +2436,108 @@ const executors = {
     }));
   },
 
+  async list_holidays_by_region(params: {
+    countryCode: string;
+    federalState?: string;
+    metroCity?: string;
+    year?: number;
+    periodStart?: string;
+    periodEnd?: string;
+  }, ctx: ToolContext) {
+    const { year, periodStart, periodEnd } = resolveHolidayPeriod(params);
+
+    const holidays = await getResolvedCalendarHolidays(asHolidayResolverDb(ctx.db), {
+      periodStart,
+      periodEnd,
+      countryCode: params.countryCode.trim().toUpperCase(),
+      federalState: params.federalState?.trim().toUpperCase() || null,
+      metroCityName: params.metroCity?.trim() || null,
+    });
+    const formattedHolidays = holidays.map(formatResolvedHoliday);
+
+    return {
+      locationContext: {
+        countryCode: params.countryCode.trim().toUpperCase(),
+        federalState: params.federalState?.trim().toUpperCase() || null,
+        metroCity: params.metroCity?.trim() || null,
+      },
+      year,
+      periodStart: fmtDate(periodStart),
+      periodEnd: fmtDate(periodEnd),
+      count: holidays.length,
+      summary: summarizeResolvedHolidays(formattedHolidays),
+      holidays: formattedHolidays,
+    };
+  },
+
+  async get_resource_holidays(params: {
+    identifier: string;
+    year?: number;
+    periodStart?: string;
+    periodEnd?: string;
+  }, ctx: ToolContext) {
+    const select = {
+      id: true,
+      eid: true,
+      displayName: true,
+      federalState: true,
+      countryId: true,
+      metroCityId: true,
+      country: { select: { code: true, name: true } },
+      metroCity: { select: { name: true } },
+    } as const;
+
+    let resource = await ctx.db.resource.findUnique({
+      where: { id: params.identifier },
+      select,
+    });
+    if (!resource) {
+      resource = await ctx.db.resource.findUnique({
+        where: { eid: params.identifier },
+        select,
+      });
+    }
+    if (!resource) {
+      resource = await ctx.db.resource.findFirst({
+        where: { displayName: { contains: params.identifier, mode: "insensitive" } },
+        select,
+      });
+    }
+    if (!resource) {
+      return { error: `Resource not found: ${params.identifier}` };
+    }
+
+    const { year, periodStart, periodEnd } = resolveHolidayPeriod(params);
+    const holidays = await getResolvedCalendarHolidays(asHolidayResolverDb(ctx.db), {
+      periodStart,
+      periodEnd,
+      countryId: resource.countryId ?? null,
+      countryCode: resource.country?.code ?? null,
+      federalState: resource.federalState ?? null,
+      metroCityId: resource.metroCityId ?? null,
+      metroCityName: resource.metroCity?.name ?? null,
+    });
+    const formattedHolidays = holidays.map(formatResolvedHoliday);
+
+    return {
+      resource: {
+        id: resource.id,
+        eid: resource.eid,
+        name: resource.displayName,
+        country: resource.country?.name ?? resource.country?.code ?? null,
+        countryCode: resource.country?.code ?? null,
+        federalState: resource.federalState ?? null,
+        metroCity: resource.metroCity?.name ?? null,
+      },
+      year,
+      periodStart: fmtDate(periodStart),
+      periodEnd: fmtDate(periodEnd),
+      count: holidays.length,
+      summary: summarizeResolvedHolidays(formattedHolidays),
+      holidays: formattedHolidays,
+    };
+  },
+
   async list_roles(_params: Record<string, never>, ctx: ToolContext) {
     const roles = await ctx.db.role.findMany({
       select: { id: true, name: true, color: true },
@@ -1982,7 +2611,11 @@ const executors = {
     const sel = {
       id: true, displayName: true, eid: true, fte: true, chargeabilityTarget: true,
       availability: true,
-      country: { select: { dailyWorkingHours: true } },
+      countryId: true,
+      federalState: true,
+      metroCityId: true,
+      country: { select: { code: true, name: true, dailyWorkingHours: true } },
+      metroCity: { select: { name: true } },
     } as const;
     let resource = await ctx.db.resource.findUnique({ where: { id: params.resourceId }, select: sel });
     if (!resource) {
@@ -2019,37 +2652,93 @@ const executors = {
       },
     });
 
-    // Count working days in month
-    const dailyHours = resource.country?.dailyWorkingHours ?? 8;
-    let workingDays = 0;
-    const d = new Date(start);
-    while (d <= end) {
-      const dow = d.getDay();
-      if (dow !== 0 && dow !== 6) workingDays++;
-      d.setDate(d.getDate() + 1);
+    const contexts = await loadResourceDailyAvailabilityContexts(
+      ctx.db,
+      [{
+        id: resource.id,
+        availability: resource.availability as unknown as import("@capakraken/shared").WeekdayAvailability,
+        countryId: resource.countryId,
+        countryCode: resource.country?.code,
+        federalState: resource.federalState,
+        metroCityId: resource.metroCityId,
+        metroCityName: resource.metroCity?.name,
+      }],
+      start,
+      end,
+    );
+    const context = contexts.get(resource.id);
+    const availability = resource.availability as unknown as WeekdayAvailability;
+    const baseAvailableHours = calculateEffectiveAvailableHours({
+      availability,
+      periodStart: start,
+      periodEnd: end,
+      context: undefined,
+    });
+    const baseWorkingDays = countEffectiveWorkingDays({
+      availability,
+      periodStart: start,
+      periodEnd: end,
+      context: undefined,
+    });
+    const availableHours = calculateEffectiveAvailableHours({
+      availability,
+      periodStart: start,
+      periodEnd: end,
+      context,
+    });
+    const workingDays = countEffectiveWorkingDays({
+      availability,
+      periodStart: start,
+      periodEnd: end,
+      context,
+    });
+
+    const resolvedHolidays = await getResolvedCalendarHolidays(asHolidayResolverDb(ctx.db), {
+      periodStart: start,
+      periodEnd: end,
+      countryId: resource.countryId ?? null,
+      countryCode: resource.country?.code ?? null,
+      federalState: resource.federalState ?? null,
+      metroCityId: resource.metroCityId ?? null,
+      metroCityName: resource.metroCity?.name ?? null,
+    });
+    const formattedHolidays = resolvedHolidays
+      .filter((holiday) => context?.holidayDates.has(holiday.date) ?? true)
+      .map(formatResolvedHoliday);
+    const holidayWorkdayCount = [...(context?.holidayDates ?? new Set<string>())].reduce((count, isoDate) => (
+      count + (getAvailabilityHoursForDate(availability, new Date(`${isoDate}T00:00:00.000Z`)) > 0 ? 1 : 0)
+    ), 0);
+    const holidayHoursDeduction = [...(context?.holidayDates ?? new Set<string>())].reduce((sum, isoDate) => (
+      sum + getAvailabilityHoursForDate(availability, new Date(`${isoDate}T00:00:00.000Z`))
+    ), 0);
+    let absenceDayEquivalent = 0;
+    let absenceHoursDeduction = 0;
+    for (const [isoDate, fraction] of context?.vacationFractionsByDate ?? []) {
+      const dayHours = getAvailabilityHoursForDate(availability, new Date(`${isoDate}T00:00:00.000Z`));
+      if (dayHours <= 0 || context?.holidayDates.has(isoDate)) {
+        continue;
+      }
+      absenceDayEquivalent += fraction;
+      absenceHoursDeduction += dayHours * fraction;
     }
 
-    const availableHours = workingDays * dailyHours * resource.fte;
-
-    // Sum booked hours (simplified: intersection of alloc dates with month)
     let bookedHours = 0;
     const allocDetails: Array<{ project: string; code: string; hours: number; status: string }> = [];
     for (const a of allocs) {
-      const overlapStart = a.startDate > start ? a.startDate : start;
-      const overlapEnd = a.endDate < end ? a.endDate : end;
-      let days = 0;
-      const cur = new Date(overlapStart);
-      while (cur <= overlapEnd) {
-        const dow = cur.getDay();
-        if (dow !== 0 && dow !== 6) days++;
-        cur.setDate(cur.getDate() + 1);
-      }
-      const hours = days * a.hoursPerDay;
+      const hours = calculateEffectiveBookedHours({
+        availability,
+        startDate: a.startDate,
+        endDate: a.endDate,
+        hoursPerDay: a.hoursPerDay,
+        periodStart: start,
+        periodEnd: end,
+        context,
+      });
       bookedHours += hours;
       allocDetails.push({
         project: a.project.name,
         code: a.project.shortCode,
-        hours: Math.round(hours * 10) / 10,
+        hours: round1(hours),
         status: a.status,
       });
     }
@@ -2057,18 +2746,58 @@ const executors = {
     const chargeabilityPercent = availableHours > 0
       ? Math.round((bookedHours / availableHours) * 1000) / 10
       : 0;
+    const targetPct = resource.chargeabilityTarget;
+    const targetHours = availableHours > 0 ? round1((availableHours * targetPct) / 100) : 0;
+    const unassignedHours = round1(Math.max(0, availableHours - bookedHours));
 
     return {
       resource: resource.displayName,
       eid: resource.eid,
       month,
+      periodStart: fmtDate(start),
+      periodEnd: fmtDate(end),
       fte: resource.fte,
       target: `${resource.chargeabilityTarget}%`,
+      targetPct,
+      targetHours,
       workingDays,
-      availableHours: Math.round(availableHours * 10) / 10,
-      bookedHours: Math.round(bookedHours * 10) / 10,
+      baseWorkingDays,
+      locationContext: {
+        countryCode: resource.country?.code ?? null,
+        country: resource.country?.name ?? resource.country?.code ?? null,
+        federalState: resource.federalState ?? null,
+        metroCity: resource.metroCity?.name ?? null,
+      },
+      baseAvailableHours: round1(baseAvailableHours),
+      availableHours: round1(availableHours),
+      bookedHours: round1(bookedHours),
+      unassignedHours,
       chargeability: `${chargeabilityPercent}%`,
+      chargeabilityPct: chargeabilityPercent,
       onTarget: chargeabilityPercent >= resource.chargeabilityTarget,
+      holidaySummary: {
+        count: formattedHolidays.length,
+        workdayCount: holidayWorkdayCount,
+        hoursDeduction: round1(holidayHoursDeduction),
+        holidays: formattedHolidays,
+        breakdown: summarizeResolvedHolidays(formattedHolidays),
+      },
+      absenceSummary: {
+        dayEquivalent: round1(absenceDayEquivalent),
+        hoursDeduction: round1(absenceHoursDeduction),
+      },
+      capacityBreakdown: {
+        formula: "baseAvailableHours - holidayHoursDeduction - absenceHoursDeduction = availableHours",
+        baseAvailableHours: round1(baseAvailableHours),
+        holidayHoursDeduction: round1(holidayHoursDeduction),
+        absenceHoursDeduction: round1(absenceHoursDeduction),
+        availableHours: round1(availableHours),
+      },
+      averages: {
+        availableHoursPerWorkingDay: averagePerWorkingDay(availableHours, workingDays),
+        bookedHoursPerWorkingDay: averagePerWorkingDay(bookedHours, workingDays),
+        remainingHoursPerWorkingDay: averagePerWorkingDay(Math.max(0, availableHours - bookedHours), workingDays),
+      },
       allocations: allocDetails,
     };
   },
@@ -3095,18 +3824,48 @@ const executors = {
   }, ctx: ToolContext) {
     let resource = await ctx.db.resource.findUnique({
       where: { id: params.resourceId },
-      select: { id: true, displayName: true, fte: true },
+      select: {
+        id: true,
+        displayName: true,
+        fte: true,
+        availability: true,
+        countryId: true,
+        federalState: true,
+        metroCityId: true,
+        country: { select: { code: true } },
+        metroCity: { select: { name: true } },
+      },
     });
     if (!resource) {
       resource = await ctx.db.resource.findUnique({
         where: { eid: params.resourceId },
-        select: { id: true, displayName: true, fte: true },
+        select: {
+          id: true,
+          displayName: true,
+          fte: true,
+          availability: true,
+          countryId: true,
+          federalState: true,
+          metroCityId: true,
+          country: { select: { code: true } },
+          metroCity: { select: { name: true } },
+        },
       });
     }
     if (!resource) {
       resource = await ctx.db.resource.findFirst({
         where: { displayName: { contains: params.resourceId, mode: "insensitive" } },
-        select: { id: true, displayName: true, fte: true },
+        select: {
+          id: true,
+          displayName: true,
+          fte: true,
+          availability: true,
+          countryId: true,
+          federalState: true,
+          metroCityId: true,
+          country: { select: { code: true } },
+          metroCity: { select: { name: true } },
+        },
       });
     }
     if (!resource) return { error: `Resource not found: ${params.resourceId}` };
@@ -3137,19 +3896,66 @@ const executors = {
         select: { type: true, startDate: true, endDate: true, isHalfDay: true },
       }),
     ]);
-
-    const totalHoursBooked = allocations.reduce((sum, a) => sum + a.hoursPerDay, 0);
-    const maxHours = resource.fte * 8;
-    const availableHoursPerDay = Math.max(0, maxHours - totalHoursBooked);
+    const availability = resource.availability as unknown as WeekdayAvailability;
+    const contexts = await loadResourceDailyAvailabilityContexts(
+      ctx.db,
+      [{
+        id: resource.id,
+        availability,
+        countryId: resource.countryId,
+        countryCode: resource.country?.code,
+        federalState: resource.federalState,
+        metroCityId: resource.metroCityId,
+        metroCityName: resource.metroCity?.name,
+      }],
+      start,
+      end,
+    );
+    const context = contexts.get(resource.id);
+    const periodAvailableHours = calculateEffectiveAvailableHours({
+      availability,
+      periodStart: start,
+      periodEnd: end,
+      context,
+    });
+    const periodBookedHours = allocations.reduce(
+      (sum, allocation) =>
+        sum + calculateEffectiveBookedHours({
+          availability,
+          startDate: allocation.startDate,
+          endDate: allocation.endDate,
+          hoursPerDay: allocation.hoursPerDay,
+          periodStart: start,
+          periodEnd: end,
+          context,
+        }),
+      0,
+    );
+    const workingDays = countEffectiveWorkingDays({
+      availability,
+      periodStart: start,
+      periodEnd: end,
+      context,
+    });
+    const availableHoursPerDay = averagePerWorkingDay(
+      Math.max(0, periodAvailableHours - periodBookedHours),
+      workingDays,
+    );
+    const bookedHoursPerDay = averagePerWorkingDay(periodBookedHours, workingDays);
+    const maxHoursPerDay = averagePerWorkingDay(periodAvailableHours, workingDays);
 
     return {
       resource: resource.displayName,
       period: `${params.startDate} to ${params.endDate}`,
       fte: resource.fte,
-      maxHoursPerDay: maxHours,
-      currentBookedHoursPerDay: totalHoursBooked,
+      workingDays,
+      periodAvailableHours: round1(periodAvailableHours),
+      periodBookedHours: round1(periodBookedHours),
+      periodRemainingHours: round1(Math.max(0, periodAvailableHours - periodBookedHours)),
+      maxHoursPerDay,
+      currentBookedHoursPerDay: bookedHoursPerDay,
       availableHoursPerDay,
-      isFullyAvailable: totalHoursBooked === 0 && vacations.length === 0,
+      isFullyAvailable: periodBookedHours === 0 && vacations.length === 0,
       existingAllocations: allocations.map((a) => ({
         project: `${a.project.name} (${a.project.shortCode})`,
         hoursPerDay: a.hoursPerDay,
@@ -3197,6 +4003,12 @@ const executors = {
       where: resourceWhere,
       select: {
         id: true, displayName: true, eid: true, fte: true, lcrCents: true,
+        availability: true,
+        countryId: true,
+        federalState: true,
+        metroCityId: true,
+        country: { select: { code: true } },
+        metroCity: { select: { name: true } },
         areaRole: { select: { name: true } },
         chapter: true,
         assignments: {
@@ -3205,16 +4017,55 @@ const executors = {
             startDate: { lte: end },
             endDate: { gte: start },
           },
-          select: { hoursPerDay: true },
+          select: { hoursPerDay: true, startDate: true, endDate: true },
         },
       },
       take: 50,
     });
+    const contexts = await loadResourceDailyAvailabilityContexts(
+      ctx.db,
+      resources.map((resource) => ({
+        id: resource.id,
+        availability: resource.availability as unknown as WeekdayAvailability,
+        countryId: resource.countryId,
+        countryCode: resource.country?.code,
+        federalState: resource.federalState,
+        metroCityId: resource.metroCityId,
+        metroCityName: resource.metroCity?.name,
+      })),
+      start,
+      end,
+    );
 
     // Score by availability
     const scored = resources.map((r) => {
-      const bookedHours = r.assignments.reduce((sum, a) => sum + a.hoursPerDay, 0);
-      const maxHours = r.fte * 8;
+      const availability = r.availability as unknown as WeekdayAvailability;
+      const context = contexts.get(r.id);
+      const workingDays = countEffectiveWorkingDays({
+        availability,
+        periodStart: start,
+        periodEnd: end,
+        context,
+      });
+      const maxHours = calculateEffectiveAvailableHours({
+        availability,
+        periodStart: start,
+        periodEnd: end,
+        context,
+      });
+      const bookedHours = r.assignments.reduce(
+        (sum, assignment) =>
+          sum + calculateEffectiveBookedHours({
+            availability,
+            startDate: assignment.startDate,
+            endDate: assignment.endDate,
+            hoursPerDay: assignment.hoursPerDay,
+            periodStart: start,
+            periodEnd: end,
+            context,
+          }),
+        0,
+      );
       const available = Math.max(0, maxHours - bookedHours);
       return {
         id: r.id,
@@ -3224,12 +4075,15 @@ const executors = {
         chapter: r.chapter,
         fte: r.fte,
         lcr: fmtEur(r.lcrCents),
-        availableHoursPerDay: Math.round(available * 10) / 10,
+        workingDays,
+        availableHours: round1(available),
+        bookedHours: round1(bookedHours),
+        availableHoursPerDay: averagePerWorkingDay(available, workingDays),
         utilization: maxHours > 0 ? Math.round((bookedHours / maxHours) * 100) : 0,
       };
     })
-      .filter((r) => r.availableHoursPerDay > 0)
-      .sort((a, b) => b.availableHoursPerDay - a.availableHoursPerDay)
+      .filter((r) => r.availableHours > 0)
+      .sort((a, b) => b.availableHours - a.availableHours)
       .slice(0, limit);
 
     return {
@@ -3262,6 +4116,12 @@ const executors = {
       where,
       select: {
         id: true, displayName: true, eid: true, fte: true,
+        availability: true,
+        countryId: true,
+        federalState: true,
+        metroCityId: true,
+        country: { select: { code: true } },
+        metroCity: { select: { name: true } },
         areaRole: { select: { name: true } },
         chapter: true,
         assignments: {
@@ -3270,27 +4130,69 @@ const executors = {
             startDate: { lte: end },
             endDate: { gte: start },
           },
-          select: { hoursPerDay: true },
+          select: { hoursPerDay: true, startDate: true, endDate: true },
         },
       },
       take: 100,
     });
+    const contexts = await loadResourceDailyAvailabilityContexts(
+      ctx.db,
+      resources.map((resource) => ({
+        id: resource.id,
+        availability: resource.availability as unknown as WeekdayAvailability,
+        countryId: resource.countryId,
+        countryCode: resource.country?.code,
+        federalState: resource.federalState,
+        metroCityId: resource.metroCityId,
+        metroCityName: resource.metroCity?.name,
+      })),
+      start,
+      end,
+    );
 
     const available = resources
       .map((r) => {
-        const booked = r.assignments.reduce((sum, a) => sum + a.hoursPerDay, 0);
-        const maxH = r.fte * 8;
+        const availability = r.availability as unknown as WeekdayAvailability;
+        const context = contexts.get(r.id);
+        const workingDays = countEffectiveWorkingDays({
+          availability,
+          periodStart: start,
+          periodEnd: end,
+          context,
+        });
+        const maxH = calculateEffectiveAvailableHours({
+          availability,
+          periodStart: start,
+          periodEnd: end,
+          context,
+        });
+        const booked = r.assignments.reduce(
+          (sum, assignment) =>
+            sum + calculateEffectiveBookedHours({
+              availability,
+              startDate: assignment.startDate,
+              endDate: assignment.endDate,
+              hoursPerDay: assignment.hoursPerDay,
+              periodStart: start,
+              periodEnd: end,
+              context,
+            }),
+          0,
+        );
+        const remaining = Math.max(0, maxH - booked);
         return {
           id: r.id,
           name: r.displayName,
           eid: r.eid,
           role: r.areaRole?.name ?? null,
           chapter: r.chapter,
-          availableHoursPerDay: Math.round((maxH - booked) * 10) / 10,
+          workingDays,
+          availableHours: round1(remaining),
+          availableHoursPerDay: averagePerWorkingDay(remaining, workingDays),
         };
       })
       .filter((r) => r.availableHoursPerDay >= minHours)
-      .sort((a, b) => b.availableHoursPerDay - a.availableHoursPerDay)
+      .sort((a, b) => b.availableHours - a.availableHours)
       .slice(0, limit);
 
     return {
@@ -3651,6 +4553,7 @@ const executors = {
   },
 
   async list_users(params: { limit?: number }, ctx: ToolContext) {
+    assertPermission(ctx, PermissionKey.MANAGE_USERS);
     const limit = Math.min(params.limit ?? 50, 100);
     const users = await ctx.db.user.findMany({
       select: {
@@ -3673,7 +4576,7 @@ const executors = {
   async list_notifications(params: { unreadOnly?: boolean; limit?: number }, ctx: ToolContext) {
     const limit = Math.min(params.limit ?? 20, 50);
     // eslint-disable-next-line @typescript-eslint/no-explicit-any
-    const where: Record<string, any> = {};
+    const where: Record<string, any> = { userId: ctx.userId };
     if (params.unreadOnly) where.readAt = null;
     const notifications = await ctx.db.notification.findMany({
       where,
@@ -3695,6 +4598,13 @@ const executors = {
   },
 
   async mark_notification_read(params: { notificationId: string }, ctx: ToolContext) {
+    const notification = await ctx.db.notification.findUnique({
+      where: { id: params.notificationId },
+      select: { id: true, userId: true },
+    });
+    if (!notification || notification.userId !== ctx.userId) {
+      return { error: "Access denied: this notification does not belong to you" };
+    }
     await ctx.db.notification.update({
       where: { id: params.notificationId },
       data: { readAt: new Date() },
@@ -3710,18 +4620,33 @@ const executors = {
     const result: Record<string, any> = {};
 
     if (section === "all" || section === "peak_times") {
-      // Peak allocation months
-      const allocs = await ctx.db.assignment.findMany({
+      const allocations = await ctx.db.assignment.findMany({
         where: { status: { not: "CANCELLED" } },
         select: { startDate: true, endDate: true, hoursPerDay: true },
       });
-      const monthCounts: Record<string, number> = {};
-      for (const a of allocs) {
-        const month = `${a.startDate.getFullYear()}-${String(a.startDate.getMonth() + 1).padStart(2, "0")}`;
-        monthCounts[month] = (monthCounts[month] ?? 0) + a.hoursPerDay;
+
+      if (allocations.length === 0) {
+        result.peakTimes = [];
+      } else {
+        const rangeStart = new Date(Math.min(...allocations.map((allocation) => allocation.startDate.getTime())));
+        const rangeEnd = new Date(Math.max(...allocations.map((allocation) => allocation.endDate.getTime())));
+        const peakTimes = await getDashboardPeakTimes(ctx.db, {
+          startDate: rangeStart,
+          endDate: rangeEnd,
+          granularity: "month",
+          groupBy: "project",
+        });
+
+        result.peakTimes = [...peakTimes]
+          .sort((left, right) => right.totalHours - left.totalHours)
+          .slice(0, 6)
+          .map((entry) => ({
+            month: entry.period,
+            totalHours: Math.round(entry.totalHours * 10) / 10,
+            totalHoursPerDay: Math.round(entry.totalHours * 10) / 10,
+            capacityHours: Math.round(entry.capacityHours * 10) / 10,
+          }));
       }
-      const sorted = Object.entries(monthCounts).sort((a, b) => b[1] - a[1]).slice(0, 6);
-      result.peakTimes = sorted.map(([m, h]) => ({ month: m, totalHoursPerDay: Math.round(h * 10) / 10 }));
     }
 
     if (section === "all" || section === "top_resources") {
@@ -4653,86 +5578,35 @@ const executors = {
   async get_budget_forecast(_params: Record<string, never>, ctx: ToolContext) {
     assertPermission(ctx, "viewCosts" as PermissionKey);
 
-    const now = new Date();
+    const forecasts = await getDashboardBudgetForecast(ctx.db);
 
-    function countBizDays(start: Date, end: Date): number {
-      let count = 0;
-      const d = new Date(start);
-      while (d <= end) {
-        const dow = d.getDay();
-        if (dow !== 0 && dow !== 6) count++;
-        d.setDate(d.getDate() + 1);
-      }
-      return count;
-    }
-
-    const projects = await ctx.db.project.findMany({
-      where: {
-        status: { in: ["ACTIVE", "DRAFT"] },
-        budgetCents: { gt: 0 },
-      },
-      include: {
-        assignments: {
-          where: { status: { not: "CANCELLED" } },
-          select: {
-            dailyCostCents: true,
-            startDate: true,
-            endDate: true,
-          },
-        },
-      },
-    });
-
-    const forecasts = projects.map((project) => {
-      const totalDays = countBizDays(project.startDate, project.endDate);
-      const elapsedDays = countBizDays(project.startDate, now < project.endDate ? now : project.endDate);
-
-      // Cost spent so far (up to now)
-      const spentCents = project.assignments.reduce((s, a) => {
-        const aStart = a.startDate < project.startDate ? project.startDate : a.startDate;
-        const aEnd = a.endDate > now ? now : a.endDate;
-        if (aEnd < aStart) return s;
-        return s + a.dailyCostCents * countBizDays(aStart, aEnd);
-      }, 0);
-
-      // Total projected cost (full assignment durations)
-      const projectedCostCents = project.assignments.reduce((s, a) => {
-        return s + a.dailyCostCents * countBizDays(a.startDate, a.endDate);
-      }, 0);
-
-      const budgetCents = project.budgetCents;
-      const utilization = budgetCents > 0 ? Math.round((spentCents / budgetCents) * 100) : 0;
-      const timelinePct = totalDays > 0 ? Math.round((elapsedDays / totalDays) * 100) : 0;
-
-      const burnStatus = timelinePct > 0
-        ? utilization > timelinePct * 1.2
+    return {
+      forecasts: forecasts.map((forecast) => ({
+        projectName: forecast.projectName,
+        shortCode: forecast.shortCode,
+        budget: fmtEur(forecast.budgetCents),
+        budgetCents: forecast.budgetCents,
+        spent: fmtEur(forecast.spentCents),
+        spentCents: forecast.spentCents,
+        remaining: fmtEur(forecast.budgetCents - forecast.spentCents),
+        remainingCents: forecast.budgetCents - forecast.spentCents,
+        projected: forecast.burnRate > 0
+          ? fmtEur(forecast.spentCents + Math.max(0, forecast.budgetCents - forecast.spentCents))
+          : fmtEur(forecast.spentCents),
+        projectedCents: forecast.burnRate > 0
+          ? Math.max(forecast.spentCents, forecast.budgetCents)
+          : forecast.spentCents,
+        burnRate: fmtEur(forecast.burnRate),
+        burnRateCents: forecast.burnRate,
+        utilization: `${forecast.pctUsed}%`,
+        estimatedExhaustionDate: forecast.estimatedExhaustionDate,
+        burnStatus: forecast.pctUsed >= 100
           ? "ahead"
-          : utilization < timelinePct * 0.8
-            ? "behind"
-            : "on_track"
-        : "not_started";
-
-      return {
-        projectId: project.id,
-        projectName: project.name,
-        shortCode: project.shortCode,
-        budget: fmtEur(budgetCents),
-        budgetCents,
-        spent: fmtEur(spentCents),
-        spentCents,
-        remaining: fmtEur(budgetCents - spentCents),
-        remainingCents: budgetCents - spentCents,
-        projected: fmtEur(projectedCostCents),
-        projectedCents: projectedCostCents,
-        utilization: `${utilization}%`,
-        timelineProgress: `${timelinePct}%`,
-        burnStatus,
-      };
-    });
-
-    forecasts.sort((a, b) => b.spentCents - a.spentCents);
-
-    return { forecasts };
+          : forecast.burnRate > 0
+            ? "on_track"
+            : "not_started",
+      })),
+    };
   },
 
   async get_insights_summary(_params: Record<string, never>, ctx: ToolContext) {
@@ -5147,17 +6021,116 @@ const executors = {
       where: { projectId: params.projectId, status: { not: "CANCELLED" } },
       include: {
         resource: {
-          select: { id: true, displayName: true, lcrCents: true, availability: true, chargeabilityTarget: true },
+          select: {
+            id: true,
+            displayName: true,
+            lcrCents: true,
+            availability: true,
+            chargeabilityTarget: true,
+            countryId: true,
+            federalState: true,
+            metroCityId: true,
+            country: { select: { code: true, dailyWorkingHours: true } },
+            metroCity: { select: { name: true } },
+          },
         },
       },
     });
 
+    // Collect resource IDs
+    const resourceIds = new Set<string>();
+    for (const c of params.changes) { if (c.resourceId) resourceIds.add(c.resourceId); }
+    for (const a of currentAssignments) { if (a.resourceId) resourceIds.add(a.resourceId); }
+
+    const resources = await ctx.db.resource.findMany({
+      where: { id: { in: [...resourceIds] } },
+      select: {
+        id: true,
+        displayName: true,
+        lcrCents: true,
+        availability: true,
+        chargeabilityTarget: true,
+        countryId: true,
+        federalState: true,
+        metroCityId: true,
+        country: { select: { code: true, dailyWorkingHours: true } },
+        metroCity: { select: { name: true } },
+      },
+    });
+    const resourceMap = new Map(resources.map((r) => [r.id, r]));
+
+    const scenarioRangeStarts = [
+      ...currentAssignments.map((assignment) => assignment.startDate),
+      ...params.changes.map((change) => new Date(change.startDate)),
+    ];
+    const scenarioRangeEnds = [
+      ...currentAssignments.map((assignment) => assignment.endDate),
+      ...params.changes.map((change) => new Date(change.endDate)),
+    ];
+    const scenarioPeriodStart = scenarioRangeStarts.length > 0
+      ? new Date(Math.min(...scenarioRangeStarts.map((date) => date.getTime())))
+      : project.startDate;
+    const scenarioPeriodEnd = scenarioRangeEnds.length > 0
+      ? new Date(Math.max(...scenarioRangeEnds.map((date) => date.getTime())))
+      : project.endDate;
+    const contexts = resourceIds.size > 0
+      ? await loadResourceDailyAvailabilityContexts(
+        ctx.db,
+        resources.map((resource) => ({
+          id: resource.id,
+          availability: (resource.availability as typeof DEFAULT_AVAILABILITY) ?? DEFAULT_AVAILABILITY,
+          countryId: resource.countryId,
+          countryCode: resource.country?.code,
+          federalState: resource.federalState,
+          metroCityId: resource.metroCityId,
+          metroCityName: resource.metroCity?.name,
+        })),
+        scenarioPeriodStart,
+        scenarioPeriodEnd,
+      )
+      : new Map();
+
+    function calculateScenarioEntryTotals(input: {
+      resourceId: string | null;
+      lcrCents: number;
+      hoursPerDay: number;
+      startDate: Date;
+      endDate: Date;
+      availability: typeof DEFAULT_AVAILABILITY;
+    }): { totalHours: number; totalCostCents: number } {
+      const context = input.resourceId ? contexts.get(input.resourceId) : undefined;
+      const totalHours = calculateEffectiveBookedHours({
+        availability: input.availability,
+        startDate: input.startDate,
+        endDate: input.endDate,
+        hoursPerDay: input.hoursPerDay,
+        periodStart: input.startDate,
+        periodEnd: input.endDate,
+        context,
+      });
+
+      return {
+        totalHours,
+        totalCostCents: Math.round(totalHours * input.lcrCents),
+      };
+    }
+
     // Compute baseline
     let baselineCostCents = 0;
     let baselineHours = 0;
     for (const a of currentAssignments) {
-      const availability = (a.resource?.availability as typeof DEFAULT_AVAILABILITY) ?? DEFAULT_AVAILABILITY;
-      const result = calculateAllocation({
+      const fallbackDailyHours = a.resource?.country?.dailyWorkingHours ?? 8;
+      const availability = (a.resource?.availability as typeof DEFAULT_AVAILABILITY) ?? {
+        monday: fallbackDailyHours,
+        tuesday: fallbackDailyHours,
+        wednesday: fallbackDailyHours,
+        thursday: fallbackDailyHours,
+        friday: fallbackDailyHours,
+        saturday: 0,
+        sunday: 0,
+      };
+      const result = calculateScenarioEntryTotals({
+        resourceId: a.resourceId,
         lcrCents: a.resource?.lcrCents ?? 0,
         hoursPerDay: a.hoursPerDay,
         startDate: a.startDate,
@@ -5168,17 +6141,6 @@ const executors = {
       baselineHours += result.totalHours;
     }
 
-    // Collect resource IDs
-    const resourceIds = new Set<string>();
-    for (const c of params.changes) { if (c.resourceId) resourceIds.add(c.resourceId); }
-    for (const a of currentAssignments) { if (a.resourceId) resourceIds.add(a.resourceId); }
-
-    const resources = await ctx.db.resource.findMany({
-      where: { id: { in: [...resourceIds] } },
-      select: { id: true, displayName: true, lcrCents: true, availability: true, chargeabilityTarget: true },
-    });
-    const resourceMap = new Map(resources.map((r) => [r.id, r]));
-
     // Build scenario entries
     const removedIds = new Set(params.changes.filter((c) => c.remove && c.assignmentId).map((c) => c.assignmentId!));
     const modifiedIds = new Set(params.changes.filter((c) => !c.remove && c.assignmentId).map((c) => c.assignmentId!));
@@ -5194,26 +6156,44 @@ const executors = {
 
     for (const a of currentAssignments) {
       if (removedIds.has(a.id) || modifiedIds.has(a.id)) continue;
+      const fallbackDailyHours = a.resource?.country?.dailyWorkingHours ?? 8;
       scenarioEntries.push({
         resourceId: a.resourceId,
         lcrCents: a.resource?.lcrCents ?? 0,
         hoursPerDay: a.hoursPerDay,
         startDate: a.startDate,
         endDate: a.endDate,
-        availability: (a.resource?.availability as typeof DEFAULT_AVAILABILITY) ?? DEFAULT_AVAILABILITY,
+        availability: (a.resource?.availability as typeof DEFAULT_AVAILABILITY) ?? {
+          monday: fallbackDailyHours,
+          tuesday: fallbackDailyHours,
+          wednesday: fallbackDailyHours,
+          thursday: fallbackDailyHours,
+          friday: fallbackDailyHours,
+          saturday: 0,
+          sunday: 0,
+        },
       });
     }
 
     for (const c of params.changes) {
       if (c.remove) continue;
       const resource = c.resourceId ? resourceMap.get(c.resourceId) : null;
+      const fallbackDailyHours = resource?.country?.dailyWorkingHours ?? 8;
       scenarioEntries.push({
         resourceId: c.resourceId ?? null,
         lcrCents: resource?.lcrCents ?? 0,
         hoursPerDay: c.hoursPerDay,
         startDate: new Date(c.startDate),
         endDate: new Date(c.endDate),
-        availability: (resource?.availability as typeof DEFAULT_AVAILABILITY) ?? DEFAULT_AVAILABILITY,
+        availability: (resource?.availability as typeof DEFAULT_AVAILABILITY) ?? {
+          monday: fallbackDailyHours,
+          tuesday: fallbackDailyHours,
+          wednesday: fallbackDailyHours,
+          thursday: fallbackDailyHours,
+          friday: fallbackDailyHours,
+          saturday: 0,
+          sunday: 0,
+        },
       });
     }
 
@@ -5221,13 +6201,7 @@ const executors = {
     let scenarioCostCents = 0;
     let scenarioHours = 0;
     for (const entry of scenarioEntries) {
-      const result = calculateAllocation({
-        lcrCents: entry.lcrCents,
-        hoursPerDay: entry.hoursPerDay,
-        startDate: entry.startDate,
-        endDate: entry.endDate,
-        availability: entry.availability,
-      });
+      const result = calculateScenarioEntryTotals(entry);
       scenarioCostCents += result.totalCostCents;
       scenarioHours += result.totalHours;
     }
@@ -5566,7 +6540,14 @@ const executors = {
 
     const assignments = await ctx.db.assignment.findMany({
       where: { projectId: project.id, status: { not: "CANCELLED" } },
-      include: { resource: { include: { country: { select: { code: true } } } } },
+      include: {
+        resource: {
+          include: {
+            country: { select: { code: true } },
+            metroCity: { select: { id: true, name: true } },
+          },
+        },
+      },
     });
 
     if (assignments.length === 0) {
@@ -5575,16 +6556,54 @@ const executors = {
 
     const { calculateShoringRatio: calcShoring } = await import("@capakraken/engine/allocation");
 
-    const mapped = assignments.map((a) => {
-      const start = new Date(a.startDate);
-      const end = new Date(a.endDate);
-      const diffDays = Math.max(1, Math.round((end.getTime() - start.getTime()) / (1000 * 60 * 60 * 24)) + 1);
-      const workingDays = Math.max(1, Math.round(diffDays / 7 * 5));
+    const resourcesById = new Map(
+      assignments.map((assignment) => [
+        assignment.resourceId,
+        {
+          id: assignment.resourceId,
+          availability: assignment.resource.availability as unknown as WeekdayAvailability,
+          countryId: assignment.resource.countryId,
+          countryCode: assignment.resource.country?.code,
+          federalState: assignment.resource.federalState,
+          metroCityId: assignment.resource.metroCityId,
+          metroCityName: assignment.resource.metroCity?.name,
+        },
+      ]),
+    );
+    const periodStart = assignments.reduce(
+      (min, assignment) => assignment.startDate < min ? assignment.startDate : min,
+      assignments[0]!.startDate,
+    );
+    const periodEnd = assignments.reduce(
+      (max, assignment) => assignment.endDate > max ? assignment.endDate : max,
+      assignments[0]!.endDate,
+    );
+    const contexts = await loadResourceDailyAvailabilityContexts(
+      ctx.db,
+      [...resourcesById.values()],
+      periodStart,
+      periodEnd,
+    );
+    const mapped = assignments.flatMap((a) => {
+      const availability = a.resource.availability as unknown as WeekdayAvailability;
+      const context = contexts.get(a.resourceId);
+      const bookedHours = calculateEffectiveBookedHours({
+        availability,
+        startDate: a.startDate,
+        endDate: a.endDate,
+        hoursPerDay: a.hoursPerDay,
+        periodStart,
+        periodEnd,
+        context,
+      });
+      if (bookedHours <= 0 || a.hoursPerDay <= 0) {
+        return [];
+      }
       return {
         resourceId: a.resourceId,
         countryCode: a.resource.country?.code ?? null,
         hoursPerDay: a.hoursPerDay,
-        workingDays,
+        workingDays: bookedHours / a.hoursPerDay,
       };
     });
 
@@ -5619,6 +6638,7 @@ export interface ToolAction {
 export interface ToolResult {
   content: string;
   action?: ToolAction;
+  data?: unknown;
 }
 
 export async function executeTool(
@@ -5652,6 +6672,7 @@ export async function executeTool(
         const desc = (actionResult.description as string | undefined) ?? url;
         return {
           content: JSON.stringify({ description: desc }),
+          data: { description: desc },
           action: { type: "navigate", url, description: desc },
         };
       }
@@ -5663,6 +6684,7 @@ export async function executeTool(
         const content = JSON.stringify(rest);
         return {
           content: content.length > 4000 ? content.slice(0, 4000) + '..."' : content,
+          data: rest,
           action: { type: "invalidate", scope },
         };
       }
@@ -5670,7 +6692,10 @@ export async function executeTool(
 
     // Cap tool result size to prevent oversized OpenAI conversation payloads
     const content = typeof result === "string" ? result : JSON.stringify(result);
-    return { content: content.length > 8000 ? content.slice(0, 8000) + '..."' : content };
+    return {
+      content: content.length > 8000 ? content.slice(0, 8000) + '..."' : content,
+      ...(typeof result === "string" ? {} : { data: result }),
+    };
   } catch (err) {
     const msg = err instanceof Error ? err.message : String(err);
     return { content: JSON.stringify({ error: msg }) };
diff --git a/packages/api/src/router/assistant.ts b/packages/api/src/router/assistant.ts
index bd103f3..6766333 100644
--- a/packages/api/src/router/assistant.ts
+++ b/packages/api/src/router/assistant.ts
@@ -5,10 +5,11 @@
 
 import { z } from "zod";
 import { TRPCError } from "@trpc/server";
-import { resolvePermissions, type PermissionOverrides, type SystemRole } from "@capakraken/shared";
+import { PermissionKey, resolvePermissions, type PermissionOverrides, type SystemRole } from "@capakraken/shared";
 import { createTRPCRouter, protectedProcedure } from "../trpc.js";
 import { createAiClient, isAiConfigured, loggedAiCall, parseAiError } from "../ai-client.js";
-import { TOOL_DEFINITIONS, executeTool, type ToolContext, type ToolAction } from "./assistant-tools.js";
+import { ADVANCED_ASSISTANT_TOOLS, TOOL_DEFINITIONS, executeTool, type ToolContext, type ToolAction } from "./assistant-tools.js";
+import { buildAssistantInsight, type AssistantInsight } from "./assistant-insights.js";
 import { checkPromptInjection } from "../lib/prompt-guard.js";
 import { checkAiOutput } from "../lib/content-filter.js";
 import { createAuditEntry } from "../lib/audit.js";
@@ -20,7 +21,7 @@ const SYSTEM_PROMPT = `Du bist der CapaKraken-Assistent — ein hilfreicher AI-A
 
 Deine Fähigkeiten:
 - Fragen über Ressourcen, Projekte, Allokationen, Budget, Urlaub, Estimates, Org-Struktur, Rollen, Blueprints, Rate Cards beantworten
-- Chargeability-Analysen, Urlaubsübersichten, Budget-Analysen, Staffing-Vorschläge, Kapazitätssuche
+- Chargeability-Analysen, Urlaubsübersichten, Feiertagskalender nach Land/Bundesland/Stadt, Budget-Analysen, Staffing-Vorschläge, Kapazitätssuche
 - Ressourcen erstellen/aktualisieren/deaktivieren, Projekte erstellen/aktualisieren/löschen
 - Allokationen erstellen/stornieren, Demands erstellen/besetzen, Staffing-Vorschläge abrufen
 - Urlaub erstellen/genehmigen/ablehnen/stornieren, Ansprüche verwalten
@@ -40,6 +41,12 @@ Wichtige Regeln:
 - Sei KURZ und DIREKT. Keine langen Erklärungen wenn nicht nötig. Antworte knapp und präzise.
 - Rufe Tools PARALLEL auf wenn möglich (z.B. search_resources + list_allocations gleichzeitig)
 - Fasse Ergebnisse kompakt zusammen — keine unnötigen Wiederholungen der Tool-Ergebnisse
+- Wenn Feiertage, SAH, Chargeability, Verfügbarkeit oder Ressourcenauswahl relevant sind, erkläre IMMER transparent:
+  1. Standortkontext (Land/Bundesland/Stadt falls relevant)
+  2. Feiertagsbasis bzw. Feiertagsanzahl
+  3. Abzüge durch Feiertage/Abwesenheiten
+  4. resultierende verfügbare Stunden / Zielstunden / Restkapazität
+- Wenn strukturierte UI-Karten vorhanden sind, wiederhole dort gezeigte Zahlen NICHT vollständig im Freitext. Gib nur die Kernaussage und die wichtigste Begründung an.
 - Wenn eine Suche keine Treffer ergibt, versuche einzelne Wörter aus der Anfrage als Suchbegriffe. Die Tools unterstützen automatisch wort-basierte Fuzzy-Suche — zeige dem User die Vorschläge wenn welche gefunden werden
 
 Datenmodell:
@@ -48,10 +55,12 @@ Datenmodell:
 - Allokationen (Assignments): resourceId + projectId, hoursPerDay, dailyCostCents, Zeitraum, Status (PROPOSED/CONFIRMED/ACTIVE/COMPLETED/CANCELLED)
 - Chargeability = gebuchte/verfügbare Stunden × 100%
 - Urlaub: Typen VACATION/SICK/PARENTAL/SPECIAL/PUBLIC_HOLIDAY, Status PENDING/APPROVED/REJECTED/CANCELLED
+- Feiertage: können je nach Land, Bundesland und Stadt unterschiedlich sein; nutze Feiertags-Tools statt zu raten
 `;
 
 /** Map tool names to the permission required to use them */
 const TOOL_PERMISSION_MAP: Record<string, string> = {
+  list_users: PermissionKey.MANAGE_USERS,
   // Resource management
   update_resource: "manageResources",
   create_resource: "manageResources",
@@ -89,7 +98,36 @@ const TOOL_PERMISSION_MAP: Record<string, string> = {
 };
 
 /** Tools that require cost visibility */
-const COST_TOOLS = new Set(["get_budget_status", "get_chargeability", "resolve_rate", "list_rate_cards", "get_estimate_detail"]);
+const COST_TOOLS = new Set(["get_budget_status", "get_chargeability", "resolve_rate", "list_rate_cards", "get_estimate_detail", "find_best_project_resource"]);
+
+export function getAvailableAssistantTools(permissions: Set<PermissionKey>) {
+  return TOOL_DEFINITIONS.filter((tool) => {
+    const toolName = tool.function.name;
+    const requiredPerm = TOOL_PERMISSION_MAP[toolName];
+
+    if (requiredPerm && !permissions.has(requiredPerm as PermissionKey)) {
+      return false;
+    }
+    if (COST_TOOLS.has(toolName) && !permissions.has(PermissionKey.VIEW_COSTS)) {
+      return false;
+    }
+    if (ADVANCED_ASSISTANT_TOOLS.has(toolName) && !permissions.has(PermissionKey.USE_ASSISTANT_ADVANCED_TOOLS)) {
+      return false;
+    }
+
+    return true;
+  });
+}
+
+function mergeInsights(existing: AssistantInsight[], next: AssistantInsight): AssistantInsight[] {
+  const duplicateIndex = existing.findIndex((item) => item.kind === next.kind && item.title === next.title && item.subtitle === next.subtitle);
+  if (duplicateIndex >= 0) {
+    const copy = [...existing];
+    copy[duplicateIndex] = next;
+    return copy;
+  }
+  return [...existing, next].slice(-6);
+}
 
 export const assistantRouter = createTRPCRouter({
   chat: protectedProcedure
@@ -176,26 +214,12 @@ export const assistantRouter = createTRPCRouter({
       }
 
       // 4. Filter tools based on granular permissions
-      const availableTools = TOOL_DEFINITIONS.filter((t) => {
-        const toolName = t.function.name;
-
-        // Check write permission
-        const requiredPerm = TOOL_PERMISSION_MAP[toolName];
-        if (requiredPerm && !permissions.has(requiredPerm as import("@capakraken/shared").PermissionKey)) {
-          return false;
-        }
-
-        // Hide cost/budget tools if user lacks viewCosts
-        if (COST_TOOLS.has(toolName) && !permissions.has("viewCosts" as import("@capakraken/shared").PermissionKey)) {
-          return false;
-        }
-
-        return true;
-      });
+      const availableTools = getAvailableAssistantTools(permissions);
 
       // 5. Function calling loop
       const toolCtx: ToolContext = { db: ctx.db, userId: ctx.dbUser!.id, userRole, permissions };
       const collectedActions: ToolAction[] = [];
+      let collectedInsights: AssistantInsight[] = [];
 
       for (let i = 0; i < MAX_TOOL_ITERATIONS; i++) {
         // eslint-disable-next-line @typescript-eslint/no-explicit-any
@@ -240,6 +264,11 @@ export const assistantRouter = createTRPCRouter({
               toolCtx,
             );
 
+            const insight = buildAssistantInsight(toolCall.function.name, result.data);
+            if (insight) {
+              collectedInsights = mergeInsights(collectedInsights, insight);
+            }
+
             // Collect any actions (e.g. navigation)
             if (result.action) {
               collectedActions.push(result.action);
@@ -298,6 +327,7 @@ export const assistantRouter = createTRPCRouter({
         return {
           content: finalContent,
           role: "assistant" as const,
+          ...(collectedInsights.length > 0 ? { insights: collectedInsights } : {}),
           ...(collectedActions.length > 0 ? { actions: collectedActions } : {}),
         };
       }
@@ -306,6 +336,7 @@ export const assistantRouter = createTRPCRouter({
       return {
         content: "I had to stop after too many tool calls. Please try a simpler question.",
         role: "assistant" as const,
+        ...(collectedInsights.length > 0 ? { insights: collectedInsights } : {}),
         ...(collectedActions.length > 0 ? { actions: collectedActions } : {}),
       };
     }),
diff --git a/packages/api/src/router/chargeability-report.ts b/packages/api/src/router/chargeability-report.ts
index df85443..f43c616 100644
--- a/packages/api/src/router/chargeability-report.ts
+++ b/packages/api/src/router/chargeability-report.ts
@@ -5,19 +5,18 @@ import {
   sumFte,
   getMonthRange,
   getMonthKeys,
-  countWorkingDaysInOverlap,
-  calculateSAH,
-  calculateAllocation,
-  DEFAULT_CALCULATION_RULES,
   type AssignmentSlice,
 } from "@capakraken/engine";
-import type { CalculationRule, AbsenceDay } from "@capakraken/shared";
-import type { SpainScheduleRule } from "@capakraken/shared";
+import type { WeekdayAvailability } from "@capakraken/shared";
 import { isChargeabilityActualBooking, listAssignmentBookings } from "@capakraken/application";
-import { VacationStatus } from "@capakraken/db";
 import { z } from "zod";
 import { createTRPCRouter, controllerProcedure } from "../trpc.js";
 import { anonymizeResources, getAnonymizationDirectory } from "../lib/anonymization.js";
+import {
+  calculateEffectiveAvailableHours,
+  calculateEffectiveBookedHours,
+  loadResourceDailyAvailabilityContexts,
+} from "../lib/resource-capacity.js";
 
 export const chargeabilityReportRouter = createTRPCRouter({
   getReport: controllerProcedure
@@ -59,6 +58,10 @@ export const chargeabilityReportRouter = createTRPCRouter({
           eid: true,
           displayName: true,
           fte: true,
+          availability: true,
+          countryId: true,
+          federalState: true,
+          metroCityId: true,
           chargeabilityTarget: true,
           country: { select: { id: true, code: true, dailyWorkingHours: true, scheduleRules: true } },
           orgUnit: { select: { id: true, name: true } },
@@ -90,6 +93,20 @@ export const chargeabilityReportRouter = createTRPCRouter({
         endDate: rangeEnd,
         resourceIds,
       });
+      const availabilityContexts = await loadResourceDailyAvailabilityContexts(
+        ctx.db,
+        resources.map((resource) => ({
+          id: resource.id,
+          availability: resource.availability as unknown as WeekdayAvailability,
+          countryId: resource.countryId,
+          countryCode: resource.country?.code,
+          federalState: resource.federalState,
+          metroCityId: resource.metroCityId,
+          metroCityName: resource.metroCity?.name,
+        })),
+        rangeStart,
+        rangeEnd,
+      );
 
       // Enrich with utilization category — fetch project util categories in bulk
       const projectIds = [...new Set(allBookings.map((b) => b.projectId))];
@@ -118,152 +135,59 @@ export const chargeabilityReportRouter = createTRPCRouter({
           },
         }));
 
-      // Fetch vacations/absences in the range (including type for rules engine)
-      const vacations = await ctx.db.vacation.findMany({
-        where: {
-          resourceId: { in: resourceIds },
-          status: VacationStatus.APPROVED,
-          startDate: { lte: rangeEnd },
-          endDate: { gte: rangeStart },
-        },
-        select: {
-          resourceId: true,
-          startDate: true,
-          endDate: true,
-          type: true,
-          isHalfDay: true,
-        },
-      });
-
-      // Load calculation rules for chargeability adjustments
-      let calcRules: CalculationRule[] = DEFAULT_CALCULATION_RULES;
-      try {
-        const dbRules = await ctx.db.calculationRule.findMany({
-          where: { isActive: true },
-          orderBy: [{ priority: "desc" }],
-        });
-        if (dbRules.length > 0) {
-          calcRules = dbRules as unknown as CalculationRule[];
-        }
-      } catch {
-        // table may not exist yet
-      }
-
       // Build per-resource, per-month forecasts
-      const resourceRows = resources.map((resource) => {
+      const resourceRows = await Promise.all(resources.map(async (resource) => {
         const resourceAssignments = assignments.filter((a) => a.resourceId === resource.id);
-        const resourceVacations = vacations.filter((v) => v.resourceId === resource.id);
         // Prefer mgmt level group target; fall back to legacy chargeabilityTarget (0-100 → 0-1)
         const targetPct = resource.managementLevelGroup?.targetPercentage
           ?? (resource.chargeabilityTarget / 100);
-        const dailyHours = resource.country?.dailyWorkingHours ?? 8;
-        const scheduleRules = resource.country?.scheduleRules as SpainScheduleRule | null;
+        const availability = resource.availability as unknown as WeekdayAvailability;
+        const context = availabilityContexts.get(resource.id);
 
-        const months = monthKeys.map((key) => {
+        const months = await Promise.all(monthKeys.map(async (key) => {
           const [y, m] = key.split("-").map(Number) as [number, number];
           const { start: monthStart, end: monthEnd } = getMonthRange(y, m);
-
-          // Compute absence days for SAH
-          const absenceDates: string[] = [];
-          for (const v of resourceVacations) {
-            const vStart = new Date(Math.max(v.startDate.getTime(), monthStart.getTime()));
-            const vEnd = new Date(Math.min(v.endDate.getTime(), monthEnd.getTime()));
-            if (vStart > vEnd) continue;
-            const cursor = new Date(vStart);
-            cursor.setUTCHours(0, 0, 0, 0);
-            const endNorm = new Date(vEnd);
-            endNorm.setUTCHours(0, 0, 0, 0);
-            while (cursor <= endNorm) {
-              absenceDates.push(cursor.toISOString().slice(0, 10));
-              cursor.setUTCDate(cursor.getUTCDate() + 1);
-            }
-          }
-
-          // Calculate SAH for this resource+month
-          const sahResult = calculateSAH({
-            dailyWorkingHours: dailyHours,
-            scheduleRules,
-            fte: resource.fte,
+          const availableHours = calculateEffectiveAvailableHours({
+            availability,
             periodStart: monthStart,
             periodEnd: monthEnd,
-            publicHolidays: [], // TODO: integrate public holidays from country
-            absenceDays: absenceDates,
+            context,
           });
-
-          // Build typed absence days for this resource in this month
-          const monthAbsenceDays: AbsenceDay[] = [];
-          for (const v of resourceVacations) {
-            const vStart = new Date(Math.max(v.startDate.getTime(), monthStart.getTime()));
-            const vEnd = new Date(Math.min(v.endDate.getTime(), monthEnd.getTime()));
-            if (vStart > vEnd) continue;
-            const absCursor = new Date(vStart);
-            absCursor.setUTCHours(0, 0, 0, 0);
-            const absEndNorm = new Date(vEnd);
-            absEndNorm.setUTCHours(0, 0, 0, 0);
-            const triggerType = v.type === "SICK" ? "SICK" as const
-              : v.type === "PUBLIC_HOLIDAY" ? "PUBLIC_HOLIDAY" as const
-              : "VACATION" as const;
-            while (absCursor <= absEndNorm) {
-              monthAbsenceDays.push({
-                date: new Date(absCursor),
-                type: triggerType,
-                ...(v.isHalfDay ? { isHalfDay: true } : {}),
-              });
-              absCursor.setUTCDate(absCursor.getUTCDate() + 1);
+          const slices: AssignmentSlice[] = resourceAssignments.flatMap((a) => {
+            const totalChargeableHours = calculateEffectiveBookedHours({
+              availability,
+              startDate: a.startDate,
+              endDate: a.endDate,
+              hoursPerDay: a.hoursPerDay,
+              periodStart: monthStart,
+              periodEnd: monthEnd,
+              context,
+            });
+            if (totalChargeableHours <= 0) {
+              return [];
             }
-          }
 
-          // Build assignment slices for this month, using rules to compute chargeable hours
-          const slices: AssignmentSlice[] = [];
-          for (const a of resourceAssignments) {
-            const workingDays = countWorkingDaysInOverlap(monthStart, monthEnd, a.startDate, a.endDate);
-            if (workingDays <= 0) continue;
-
-            const categoryCode = a.project.utilizationCategory?.code ?? "Chg";
-
-            // If there are absences and rules, compute rules-adjusted chargeable hours
-            if (monthAbsenceDays.length > 0) {
-              const overlapStart = new Date(Math.max(monthStart.getTime(), a.startDate.getTime()));
-              const overlapEnd = new Date(Math.min(monthEnd.getTime(), a.endDate.getTime()));
-
-              const calcResult = calculateAllocation({
-                lcrCents: 0, // we only need hours, not costs
-                hoursPerDay: a.hoursPerDay,
-                startDate: overlapStart,
-                endDate: overlapEnd,
-                availability: { monday: dailyHours, tuesday: dailyHours, wednesday: dailyHours, thursday: dailyHours, friday: dailyHours, saturday: 0, sunday: 0 },
-                absenceDays: monthAbsenceDays,
-                calculationRules: calcRules,
-              });
-
-              slices.push({
-                hoursPerDay: a.hoursPerDay,
-                workingDays,
-                categoryCode,
-                ...(calcResult.totalChargeableHours !== undefined ? { totalChargeableHours: calcResult.totalChargeableHours } : {}),
-              });
-            } else {
-              slices.push({
-                hoursPerDay: a.hoursPerDay,
-                workingDays,
-                categoryCode,
-              });
-            }
-          }
+            return {
+              hoursPerDay: a.hoursPerDay,
+              workingDays: 0,
+              categoryCode: a.project.utilizationCategory?.code ?? "Chg",
+              totalChargeableHours,
+            };
+          });
 
           const forecast = deriveResourceForecast({
             fte: resource.fte,
             targetPercentage: targetPct,
             assignments: slices,
-            sah: sahResult.standardAvailableHours,
+            sah: availableHours,
           });
 
           return {
             monthKey: key,
-            sah: sahResult.standardAvailableHours,
+            sah: availableHours,
             ...forecast,
           };
-        });
+        }));
 
         return {
           id: resource.id,
@@ -278,7 +202,7 @@ export const chargeabilityReportRouter = createTRPCRouter({
           targetPct,
           months,
         };
-      });
+      }));
 
       // Compute group totals per month
       const groupTotals = monthKeys.map((key, monthIdx) => {
diff --git a/packages/api/src/router/computation-graph.ts b/packages/api/src/router/computation-graph.ts
index e31b59e..eddbc78 100644
--- a/packages/api/src/router/computation-graph.ts
+++ b/packages/api/src/router/computation-graph.ts
@@ -4,18 +4,27 @@ import {
   deriveResourceForecast,
   computeBudgetStatus,
   getMonthRange,
-  countWorkingDaysInOverlap,
   DEFAULT_CALCULATION_RULES,
   summarizeEstimateDemandLines,
   computeEvenSpread,
   distributeHoursToWeeks,
   type AssignmentSlice,
 } from "@capakraken/engine";
-import type { CalculationRule, AbsenceDay, SpainScheduleRule, WeekdayAvailability } from "@capakraken/shared";
+import type { CalculationRule, SpainScheduleRule, WeekdayAvailability } from "@capakraken/shared";
 import { VacationStatus } from "@capakraken/db";
 import { z } from "zod";
 import { createTRPCRouter, controllerProcedure } from "../trpc.js";
 import { fmtEur } from "../lib/format-utils.js";
+import {
+  asHolidayResolverDb,
+  collectHolidayAvailability,
+  getResolvedCalendarHolidays,
+} from "../lib/holiday-availability.js";
+import {
+  calculateEffectiveAvailableHours,
+  countEffectiveWorkingDays,
+  loadResourceDailyAvailabilityContexts,
+} from "../lib/resource-capacity.js";
 
 // ─── Graph Types (mirrored from client for API response) ────────────────────
 
@@ -62,6 +71,21 @@ function fmtNum(v: number, decimals = 1): string {
   return v.toFixed(decimals);
 }
 
+function getAvailabilityHoursForDate(
+  availability: WeekdayAvailability,
+  date: Date,
+): number {
+  const dayKey = ["sunday", "monday", "tuesday", "wednesday", "thursday", "friday", "saturday"][date.getUTCDay()] as keyof WeekdayAvailability;
+  return availability[dayKey] ?? 0;
+}
+
+function sumAvailabilityHoursForDates(
+  availability: WeekdayAvailability,
+  dates: Date[],
+): number {
+  return dates.reduce((sum, date) => sum + getAvailabilityHoursForDate(availability, date), 0);
+}
+
 // ─── Router ─────────────────────────────────────────────────────────────────
 
 export const computationGraphRouter = createTRPCRouter({
@@ -88,8 +112,12 @@ export const computationGraphRouter = createTRPCRouter({
           fte: true,
           lcrCents: true,
           chargeabilityTarget: true,
+          countryId: true,
+          federalState: true,
+          metroCityId: true,
           availability: true,
-          country: { select: { id: true, code: true, dailyWorkingHours: true, scheduleRules: true } },
+          country: { select: { id: true, code: true, name: true, dailyWorkingHours: true, scheduleRules: true } },
+          metroCity: { select: { id: true, name: true } },
           managementLevelGroup: { select: { id: true, name: true, targetPercentage: true } },
         },
       });
@@ -133,7 +161,7 @@ export const computationGraphRouter = createTRPCRouter({
         },
       });
 
-      // ── 3. Load absences ──
+      // ── 3. Load absences + holiday context ──
       const vacations = await ctx.db.vacation.findMany({
         where: {
           resourceId: input.resourceId,
@@ -143,45 +171,47 @@ export const computationGraphRouter = createTRPCRouter({
         },
         select: { startDate: true, endDate: true, type: true, isHalfDay: true },
       });
+      const resolvedHolidays = await getResolvedCalendarHolidays(asHolidayResolverDb(ctx.db), {
+        periodStart: monthStart,
+        periodEnd: monthEnd,
+        countryId: resource.countryId,
+        countryCode: resource.country?.code,
+        federalState: resource.federalState,
+        metroCityId: resource.metroCityId,
+        metroCityName: resource.metroCity?.name,
+      });
+      const holidayAvailability = collectHolidayAvailability({
+        vacations,
+        periodStart: monthStart,
+        periodEnd: monthEnd,
+        countryCode: resource.country?.code,
+        federalState: resource.federalState,
+        metroCityName: resource.metroCity?.name,
+        resolvedHolidayStrings: resolvedHolidays.map((holiday) => holiday.date),
+      });
+      const publicHolidayStrings = holidayAvailability.publicHolidayStrings;
+      const absenceDateStrings = holidayAvailability.absenceDateStrings;
+      const absenceDays = holidayAvailability.absenceDays;
+      const halfDayCount = absenceDays.filter((absence) => absence.isHalfDay).length;
+      const vacationDayCount = absenceDays.filter((absence) => absence.type === "VACATION").length;
+      const sickDayCount = absenceDays.filter((absence) => absence.type === "SICK").length;
+      const publicHolidayCount = resolvedHolidays.length;
 
-      // Build absence dates for SAH (ISO strings), separating public holidays
-      const publicHolidayStrings: string[] = [];
-      const absenceDateStrings: string[] = [];
-      const absenceDays: AbsenceDay[] = [];
-      let halfDayCount = 0;
-      let vacationDayCount = 0;
-      let sickDayCount = 0;
-      let publicHolidayCount = 0;
-      for (const v of vacations) {
-        const vStart = new Date(Math.max(v.startDate.getTime(), monthStart.getTime()));
-        const vEnd = new Date(Math.min(v.endDate.getTime(), monthEnd.getTime()));
-        if (vStart > vEnd) continue;
-        const cursor = new Date(vStart);
-        cursor.setUTCHours(0, 0, 0, 0);
-        const endNorm = new Date(vEnd);
-        endNorm.setUTCHours(0, 0, 0, 0);
-        const triggerType = v.type === "SICK" ? "SICK" as const
-          : v.type === "PUBLIC_HOLIDAY" ? "PUBLIC_HOLIDAY" as const
-          : "VACATION" as const;
-        while (cursor <= endNorm) {
-          const isoDate = cursor.toISOString().slice(0, 10);
-          if (triggerType === "PUBLIC_HOLIDAY") {
-            publicHolidayStrings.push(isoDate);
-            publicHolidayCount++;
-          } else {
-            absenceDateStrings.push(isoDate);
-            if (triggerType === "VACATION") vacationDayCount++;
-            if (triggerType === "SICK") sickDayCount++;
-          }
-          absenceDays.push({
-            date: new Date(cursor),
-            type: triggerType,
-            ...(v.isHalfDay ? { isHalfDay: true } : {}),
-          });
-          if (v.isHalfDay) halfDayCount++;
-          cursor.setUTCDate(cursor.getUTCDate() + 1);
-        }
-      }
+      const contexts = await loadResourceDailyAvailabilityContexts(
+        ctx.db,
+        [{
+          id: resource.id,
+          availability: weeklyAvailability,
+          countryId: resource.countryId,
+          countryCode: resource.country?.code,
+          federalState: resource.federalState,
+          metroCityId: resource.metroCityId,
+          metroCityName: resource.metroCity?.name,
+        }],
+        monthStart,
+        monthEnd,
+      );
+      const availabilityContext = contexts.get(resource.id);
 
       // ── 4. Load calculation rules ──
       let calcRules: CalculationRule[] = DEFAULT_CALCULATION_RULES;
@@ -197,7 +227,7 @@ export const computationGraphRouter = createTRPCRouter({
         // table may not exist yet
       }
 
-      // ── 5. Calculate SAH ──
+      // ── 5. Calculate SAH / effective capacity ──
       const sahResult = calculateSAH({
         dailyWorkingHours: dailyHours,
         scheduleRules,
@@ -207,6 +237,60 @@ export const computationGraphRouter = createTRPCRouter({
         publicHolidays: publicHolidayStrings,
         absenceDays: absenceDateStrings,
       });
+      const baseWorkingDays = countEffectiveWorkingDays({
+        availability: weeklyAvailability,
+        periodStart: monthStart,
+        periodEnd: monthEnd,
+        context: undefined,
+      });
+      const effectiveWorkingDays = countEffectiveWorkingDays({
+        availability: weeklyAvailability,
+        periodStart: monthStart,
+        periodEnd: monthEnd,
+        context: availabilityContext,
+      });
+      const baseAvailableHours = calculateEffectiveAvailableHours({
+        availability: weeklyAvailability,
+        periodStart: monthStart,
+        periodEnd: monthEnd,
+        context: undefined,
+      });
+      const effectiveAvailableHours = calculateEffectiveAvailableHours({
+        availability: weeklyAvailability,
+        periodStart: monthStart,
+        periodEnd: monthEnd,
+        context: availabilityContext,
+      });
+      const publicHolidayDates = resolvedHolidays.map((holiday) => new Date(`${holiday.date}T00:00:00.000Z`));
+      const publicHolidayWorkdayCount = publicHolidayDates.reduce((count, date) => (
+        count + (getAvailabilityHoursForDate(weeklyAvailability, date) > 0 ? 1 : 0)
+      ), 0);
+      const publicHolidayHoursDeduction = sumAvailabilityHoursForDates(
+        weeklyAvailability,
+        publicHolidayDates,
+      );
+      const absenceHoursDeduction = absenceDays.reduce((sum, absence) => {
+        if (absence.type === "PUBLIC_HOLIDAY") {
+          return sum;
+        }
+        const baseHours = getAvailabilityHoursForDate(weeklyAvailability, absence.date);
+        return sum + baseHours * (absence.isHalfDay ? 0.5 : 1);
+      }, 0);
+      const effectiveHoursPerWorkingDay = effectiveWorkingDays > 0
+        ? effectiveAvailableHours / effectiveWorkingDays
+        : 0;
+      const holidayScopeSummary = [
+        resource.country?.code ?? "—",
+        resource.federalState ?? "—",
+        resource.metroCity?.name ?? "—",
+      ].join(" / ");
+      const holidayExamples = resolvedHolidays.length > 0
+        ? resolvedHolidays.slice(0, 4).map((holiday) => `${holiday.date} ${holiday.name}`).join(", ")
+        : "none";
+      const holidayScopeBreakdown = resolvedHolidays.reduce<Record<string, number>>((counts, holiday) => {
+        counts[holiday.scope] = (counts[holiday.scope] ?? 0) + 1;
+        return counts;
+      }, {});
 
       // ── 6. Calculate allocations + chargeability slices ──
       const slices: AssignmentSlice[] = [];
@@ -217,9 +301,6 @@ export const computationGraphRouter = createTRPCRouter({
       let hasRulesEffect = false;
 
       for (const a of assignments) {
-        const workingDays = countWorkingDaysInOverlap(monthStart, monthEnd, a.startDate, a.endDate);
-        if (workingDays <= 0) continue;
-
         const overlapStart = new Date(Math.max(monthStart.getTime(), a.startDate.getTime()));
         const overlapEnd = new Date(Math.min(monthEnd.getTime(), a.endDate.getTime()));
         const categoryCode = a.project.utilizationCategory?.code ?? "Chg";
@@ -233,6 +314,7 @@ export const computationGraphRouter = createTRPCRouter({
           absenceDays,
           calculationRules: calcRules,
         });
+        if (calcResult.workingDays <= 0 && calcResult.totalHours <= 0) continue;
 
         totalAllocHours += calcResult.totalHours;
         totalAllocCostCents += calcResult.totalCostCents;
@@ -247,7 +329,7 @@ export const computationGraphRouter = createTRPCRouter({
 
         slices.push({
           hoursPerDay: a.hoursPerDay,
-          workingDays,
+          workingDays: calcResult.workingDays,
           categoryCode,
           ...(calcResult.totalChargeableHours !== undefined
             ? { totalChargeableHours: calcResult.totalChargeableHours }
@@ -260,7 +342,7 @@ export const computationGraphRouter = createTRPCRouter({
         fte: resource.fte,
         targetPercentage: targetPct,
         assignments: slices,
-        sah: sahResult.standardAvailableHours,
+        sah: effectiveAvailableHours,
       });
 
       // ── 8. Build budget status for first project with budget ──
@@ -319,7 +401,18 @@ export const computationGraphRouter = createTRPCRouter({
         ? assignments.reduce((sum, a) => sum + a.hoursPerDay, 0) / assignments.length
         : 0;
       const totalWorkingDaysInMonth = assignments.reduce((sum, a) => {
-        return sum + countWorkingDaysInOverlap(monthStart, monthEnd, a.startDate, a.endDate);
+        const overlapStart = new Date(Math.max(monthStart.getTime(), a.startDate.getTime()));
+        const overlapEnd = new Date(Math.min(monthEnd.getTime(), a.endDate.getTime()));
+        const calcResult = calculateAllocation({
+          lcrCents: resource.lcrCents,
+          hoursPerDay: a.hoursPerDay,
+          startDate: overlapStart,
+          endDate: overlapEnd,
+          availability: weeklyAvailability,
+          absenceDays,
+          calculationRules: calcRules,
+        });
+        return sum + calcResult.workingDays;
       }, 0);
 
       // Format weekly availability for display
@@ -332,9 +425,10 @@ export const computationGraphRouter = createTRPCRouter({
         : weekdayLabels.map((d, i) => `${d}:${weekdayValues[i]}`).join(" ");
 
       // Derived utilization ratio
-      const utilizationPct = sahResult.standardAvailableHours > 0
-        ? (totalAllocHours / sahResult.standardAvailableHours) * 100
+      const utilizationPct = effectiveAvailableHours > 0
+        ? (totalAllocHours / effectiveAvailableHours) * 100
         : 0;
+      const chargeableHours = forecast.chg * effectiveAvailableHours;
 
       // Has schedule rules (Spain variable hours)?
       const hasScheduleRules = !!scheduleRules;
@@ -342,6 +436,11 @@ export const computationGraphRouter = createTRPCRouter({
       const nodes: GraphNode[] = [
         // INPUT
         n("input.fte", "FTE", fmtNum(resource.fte, 2), "ratio", "INPUT", `Resource FTE factor`, 0),
+        n("input.country", "Country", resource.country?.name ?? resource.country?.code ?? "—", "text", "INPUT", "Country used for base working-time and national holiday rules", 0),
+        n("input.state", "State", resource.federalState ?? "—", "text", "INPUT", "Federal state / region used for regional holidays", 0),
+        n("input.city", "City", resource.metroCity?.name ?? "—", "text", "INPUT", "City / metro used for local holidays", 0),
+        n("input.holidayContext", "Holiday Context", holidayScopeSummary, "text", "INPUT", "Resolved holiday scope chain: country / state / city", 0),
+        n("input.holidayExamples", "Holiday Dates", holidayExamples, "text", "INPUT", `Resolved holidays in ${input.month}; scopes: COUNTRY ${holidayScopeBreakdown.COUNTRY ?? 0}, STATE ${holidayScopeBreakdown.STATE ?? 0}, CITY ${holidayScopeBreakdown.CITY ?? 0}`, 0),
         n("input.dailyHours", "Country Hours", `${dailyHours} h`, "hours", "INPUT", `Base daily working hours (${resource.country?.code ?? "?"})`, 0),
         ...(hasScheduleRules ? [
           n("input.scheduleRules", "Schedule Rules", "Spain", "—", "INPUT", "Variable daily hours (regular/friday/summer)", 0),
@@ -350,7 +449,7 @@ export const computationGraphRouter = createTRPCRouter({
         n("input.lcrCents", "LCR", fmtEur(resource.lcrCents), "cents/h", "INPUT", "Loaded Cost Rate per hour", 0),
         n("input.hoursPerDay", "Hours/Day", fmtNum(avgHoursPerDay), "hours", "INPUT", "Average hours/day across assignments", 0),
         n("input.absences", "Absences", `${absenceDays.length}`, "count", "INPUT", `Absence days in ${input.month} (${vacationDayCount} vacation, ${sickDayCount} sick${halfDayCount > 0 ? `, ${halfDayCount} half-day` : ""})`, 0),
-        n("input.publicHolidays", "Public Holidays", `${publicHolidayCount}`, "count", "INPUT", `Public holidays in ${input.month}`, 0),
+        n("input.publicHolidays", "Public Holidays", `${publicHolidayCount}`, "count", "INPUT", `Resolved holidays in ${input.month}; ${publicHolidayWorkdayCount} hit configured working days`, 0),
         n("input.calcRules", "Active Rules", `${calcRules.length}`, "count", "INPUT", "Active calculation rules", 0),
         n("input.targetPct", "Target", fmtPct(targetPct), "%", "INPUT", `Chargeability target (${resource.managementLevelGroup?.name ?? "legacy"})`, 0),
         n("input.assignmentCount", "Assignments", `${assignments.length}`, "count", "INPUT", `Active assignments in ${input.month}`, 0),
@@ -358,12 +457,15 @@ export const computationGraphRouter = createTRPCRouter({
         // SAH
         n("sah.calendarDays", "Calendar Days", `${sahResult.calendarDays}`, "days", "SAH", "Total calendar days in period", 1),
         n("sah.weekendDays", "Weekend Days", `${sahResult.weekendDays}`, "days", "SAH", "Saturday + Sunday count", 1),
-        n("sah.grossWorkingDays", "Gross Work Days", `${sahResult.grossWorkingDays}`, "days", "SAH", "Calendar days minus weekends", 1, "calendarDays - weekendDays"),
-        n("sah.publicHolidayDays", "Holiday Ded.", `${sahResult.publicHolidayDays}`, "days", "SAH", "Public holidays falling on working days", 1),
-        n("sah.absenceDays", "Absence Ded.", `${sahResult.absenceDays}`, "days", "SAH", "Absences (vacation/sick) falling on working days", 1),
-        n("sah.netWorkingDays", "Net Work Days", `${sahResult.netWorkingDays}`, "days", "SAH", "Working days after deductions", 2, "gross - holidays - absences"),
-        n("sah.effectiveHoursPerDay", "Eff. Hrs/Day", fmtNum(sahResult.effectiveHoursPerDay), "hours", "SAH", "Average effective hours per net working day (FTE-scaled)", 2, "Σ(dailyHours × FTE) / netDays"),
-        n("sah.sah", "SAH", fmtNum(sahResult.standardAvailableHours), "hours", "SAH", "Standard Available Hours — chargeability denominator", 2, "Σ(dailyHours × FTE) per net day"),
+        n("sah.grossWorkingDays", "Gross Work Days", `${baseWorkingDays}`, "days", "SAH", "Working days from the resource-specific weekly availability before holidays/absences", 1, "count(availability > 0)"),
+        n("sah.baseHours", "Base Hours", fmtNum(baseAvailableHours), "hours", "SAH", "Available hours from weekly availability before holiday/absence deductions", 1, "Σ(daily availability)"),
+        n("sah.publicHolidayDays", "Holiday Ded.", `${publicHolidayWorkdayCount}`, "days", "SAH", "Holiday workdays deducted after applying country/state/city scope and weekday availability", 1),
+        n("sah.publicHolidayHours", "Holiday Hrs Ded.", fmtNum(publicHolidayHoursDeduction), "hours", "SAH", "Hours removed by resolved public holidays", 1, "Σ(availability on holiday dates)"),
+        n("sah.absenceDays", "Absence Ded.", `${absenceDateStrings.length}`, "days", "SAH", "Vacation/sick days that hit working days and are not already public holidays", 1),
+        n("sah.absenceHours", "Absence Hrs Ded.", fmtNum(absenceHoursDeduction), "hours", "SAH", "Hours removed by vacation/sick absences", 1, "Σ(availability × absence fraction)"),
+        n("sah.netWorkingDays", "Net Work Days", `${effectiveWorkingDays}`, "days", "SAH", "Remaining working days after holiday and absence deductions", 2, "gross - holidays - absences"),
+        n("sah.effectiveHoursPerDay", "Eff. Hrs/Day", fmtNum(effectiveHoursPerWorkingDay), "hours", "SAH", "Average effective hours per remaining working day", 2, "SAH / net work days"),
+        n("sah.sah", "SAH", fmtNum(effectiveAvailableHours), "hours", "SAH", "Effective available hours after weekly availability, local holidays and absences", 2, "base hours - holiday hours - absence hours"),
 
         // ALLOCATION
         n("alloc.workingDays", "Work Days", `${totalWorkingDaysInMonth}`, "days", "ALLOCATION", "Working days covered by assignments in period", 1, "Σ(overlap workdays)"),
@@ -387,24 +489,24 @@ export const computationGraphRouter = createTRPCRouter({
         ] : []),
 
         // CHARGEABILITY — full breakdown from deriveResourceForecast
-        n("chg.chgHours", "Chg Hours", fmtNum(forecast.chg * sahResult.standardAvailableHours), "hours", "CHARGEABILITY", "Total chargeable hours", 2, "Σ(Chg-category slices)"),
+        n("chg.chgHours", "Chg Hours", fmtNum(chargeableHours), "hours", "CHARGEABILITY", "Total chargeable hours against effective SAH", 2, "chargeability × SAH"),
         n("chg.chg", "Chargeability", fmtPct(forecast.chg), "%", "CHARGEABILITY", "Chargeability ratio", 3, "chgHours / SAH"),
         ...(forecast.bd > 0 ? [
-          n("chg.bd", "BD Ratio", fmtPct(forecast.bd), "%", "CHARGEABILITY", `Business development: ${fmtNum(forecast.bd * sahResult.standardAvailableHours)}h`, 3, "bdHours / SAH"),
+          n("chg.bd", "BD Ratio", fmtPct(forecast.bd), "%", "CHARGEABILITY", `Business development: ${fmtNum(forecast.bd * effectiveAvailableHours)}h`, 3, "bdHours / SAH"),
         ] : []),
         ...(forecast.mdi > 0 ? [
-          n("chg.mdi", "MD&I Ratio", fmtPct(forecast.mdi), "%", "CHARGEABILITY", `MD&I hours: ${fmtNum(forecast.mdi * sahResult.standardAvailableHours)}h`, 3, "mdiHours / SAH"),
+          n("chg.mdi", "MD&I Ratio", fmtPct(forecast.mdi), "%", "CHARGEABILITY", `MD&I hours: ${fmtNum(forecast.mdi * effectiveAvailableHours)}h`, 3, "mdiHours / SAH"),
         ] : []),
         ...(forecast.mo > 0 ? [
-          n("chg.mo", "M&O Ratio", fmtPct(forecast.mo), "%", "CHARGEABILITY", `M&O hours: ${fmtNum(forecast.mo * sahResult.standardAvailableHours)}h`, 3, "moHours / SAH"),
+          n("chg.mo", "M&O Ratio", fmtPct(forecast.mo), "%", "CHARGEABILITY", `M&O hours: ${fmtNum(forecast.mo * effectiveAvailableHours)}h`, 3, "moHours / SAH"),
         ] : []),
         ...(forecast.pdr > 0 ? [
-          n("chg.pdr", "PD&R Ratio", fmtPct(forecast.pdr), "%", "CHARGEABILITY", `PD&R hours: ${fmtNum(forecast.pdr * sahResult.standardAvailableHours)}h`, 3, "pdrHours / SAH"),
+          n("chg.pdr", "PD&R Ratio", fmtPct(forecast.pdr), "%", "CHARGEABILITY", `PD&R hours: ${fmtNum(forecast.pdr * effectiveAvailableHours)}h`, 3, "pdrHours / SAH"),
         ] : []),
         ...(forecast.absence > 0 ? [
-          n("chg.absence", "Absence Ratio", fmtPct(forecast.absence), "%", "CHARGEABILITY", `Absence hours: ${fmtNum(forecast.absence * sahResult.standardAvailableHours)}h`, 3, "absenceHours / SAH"),
+          n("chg.absence", "Absence Ratio", fmtPct(forecast.absence), "%", "CHARGEABILITY", `Absence hours: ${fmtNum(forecast.absence * effectiveAvailableHours)}h`, 3, "absenceHours / SAH"),
         ] : []),
-        n("chg.unassigned", "Unassigned", fmtPct(forecast.unassigned), "%", "CHARGEABILITY", `${fmtNum(forecast.unassigned * sahResult.standardAvailableHours)}h of ${fmtNum(sahResult.standardAvailableHours)}h SAH not assigned`, 3, "max(0, SAH - assigned) / SAH"),
+        n("chg.unassigned", "Unassigned", fmtPct(forecast.unassigned), "%", "CHARGEABILITY", `${fmtNum(forecast.unassigned * effectiveAvailableHours)}h of ${fmtNum(effectiveAvailableHours)}h SAH not assigned`, 3, "max(0, SAH - assigned) / SAH"),
         n("chg.target", "Target", fmtPct(targetPct), "%", "CHARGEABILITY", "Chargeability target from management level", 3),
         n("chg.gap", "Gap to Target", `${forecast.chg - targetPct >= 0 ? "+" : ""}${((forecast.chg - targetPct) * 100).toFixed(1)} pp`, "pp", "CHARGEABILITY", `Chargeability (${fmtPct(forecast.chg)}) vs. target (${fmtPct(targetPct)})`, 3, "chargeability − target"),
 
@@ -414,7 +516,16 @@ export const computationGraphRouter = createTRPCRouter({
 
       const links: GraphLink[] = [
         // INPUT → SAH
+        l("input.country", "input.holidayContext", "holiday base", 1),
+        l("input.state", "input.holidayContext", "regional scope", 1),
+        l("input.city", "input.holidayContext", "local scope", 1),
+        l("input.holidayContext", "input.holidayExamples", "resolve holidays", 1),
         l("input.dailyHours", "sah.grossWorkingDays", "base hours", 1),
+        l("input.weeklyAvail", "sah.grossWorkingDays", "working-day pattern", 2),
+        l("input.weeklyAvail", "sah.baseHours", "sum by weekday", 2),
+        l("input.holidayExamples", "sah.publicHolidayDays", "resolved dates", 2),
+        l("input.holidayExamples", "sah.publicHolidayHours", "remove matching day hours", 2),
+        l("input.absences", "sah.absenceHours", "remove absence fractions", 1),
         ...(hasScheduleRules ? [
           l("input.scheduleRules", "sah.effectiveHoursPerDay", "variable h/day", 1),
         ] : []),
@@ -422,14 +533,14 @@ export const computationGraphRouter = createTRPCRouter({
         l("sah.weekendDays", "sah.grossWorkingDays", "−", 1),
         l("input.publicHolidays", "sah.publicHolidayDays", "∩ workdays", 1),
         l("input.absences", "sah.absenceDays", "∩ workdays", 1),
-        l("sah.grossWorkingDays", "sah.netWorkingDays", "−", 2),
+        l("sah.grossWorkingDays", "sah.netWorkingDays", "− holiday/absence days", 2),
         l("sah.publicHolidayDays", "sah.netWorkingDays", "−", 1),
         l("sah.absenceDays", "sah.netWorkingDays", "−", 1),
-        l("input.dailyHours", "sah.effectiveHoursPerDay", "×", 1),
-        l("input.fte", "sah.effectiveHoursPerDay", "× FTE", 2),
+        l("sah.baseHours", "sah.sah", "start from base capacity", 2),
+        l("sah.publicHolidayHours", "sah.sah", "− holiday hours", 2),
+        l("sah.absenceHours", "sah.sah", "− absence hours", 2),
+        l("sah.sah", "sah.effectiveHoursPerDay", "÷", 1),
         l("sah.netWorkingDays", "sah.effectiveHoursPerDay", "÷", 1),
-        l("sah.effectiveHoursPerDay", "sah.sah", "× netDays", 2),
-        l("sah.netWorkingDays", "sah.sah", "×", 2),
 
         // INPUT → ALLOCATION
         l("input.weeklyAvail", "alloc.totalHours", "caps h/day", 2),
@@ -489,6 +600,30 @@ export const computationGraphRouter = createTRPCRouter({
           resourceEid: resource.eid,
           month: input.month,
           assignmentCount: assignments.length,
+          countryCode: resource.country?.code ?? null,
+          countryName: resource.country?.name ?? null,
+          federalState: resource.federalState ?? null,
+          metroCityName: resource.metroCity?.name ?? null,
+          resolvedHolidays: resolvedHolidays.map((holiday) => ({
+            date: holiday.date,
+            name: holiday.name,
+            scope: holiday.scope,
+            calendarName: holiday.calendarName,
+          })),
+          factors: {
+            weeklyAvailability,
+            baseWorkingDays,
+            effectiveWorkingDays,
+            baseAvailableHours,
+            effectiveAvailableHours,
+            publicHolidayCount,
+            publicHolidayWorkdayCount,
+            publicHolidayHoursDeduction,
+            absenceDayCount: absenceDateStrings.length,
+            absenceHoursDeduction,
+            chargeableHours,
+            utilizationPct,
+          },
         },
       };
     }),
diff --git a/packages/api/src/router/entitlement.ts b/packages/api/src/router/entitlement.ts
index 8f896fa..4e43de8 100644
--- a/packages/api/src/router/entitlement.ts
+++ b/packages/api/src/router/entitlement.ts
@@ -9,19 +9,19 @@ import { z } from "zod";
 import { RESOURCE_BRIEF_SELECT } from "../db/selects.js";
 import { createTRPCRouter, adminProcedure, managerProcedure, protectedProcedure } from "../trpc.js";
 import { createAuditEntry } from "../lib/audit.js";
+import { loadResourceHolidayContext } from "../lib/resource-holiday-context.js";
+import { countCalendarDaysInPeriod, countVacationChargeableDays } from "../lib/vacation-day-count.js";
 
 /** Types that consume from annual leave balance */
 const BALANCE_TYPES: VacationType[] = [VacationType.ANNUAL, VacationType.OTHER];
 
-/**
- * Count calendar days between two dates (inclusive).
- * Half-day vacations count as 0.5.
- */
-function countDays(startDate: Date, endDate: Date, isHalfDay: boolean): number {
-  if (isHalfDay) return 0.5;
-  const ms = endDate.getTime() - startDate.getTime();
-  return Math.round(ms / 86_400_000) + 1;
-}
+type EntitlementSnapshot = {
+  id: string;
+  entitledDays: number;
+  carryoverDays: number;
+  usedDays: number;
+  pendingDays: number;
+};
 
 /**
  * Get or create an entitlement record, applying carryover from previous year if needed.
@@ -61,6 +61,14 @@ async function getOrCreateEntitlement(
   return entitlement;
 }
 
+function calculateCarryoverDays(entitlement: {
+  entitledDays: number;
+  usedDays: number;
+  pendingDays: number;
+}): number {
+  return Math.max(0, entitlement.entitledDays - entitlement.usedDays - entitlement.pendingDays);
+}
+
 /**
  * Recompute used/pending days from actual vacation records and update the cached values.
  */
@@ -69,14 +77,57 @@ async function syncEntitlement(
   resourceId: string,
   year: number,
   defaultDays: number,
-) {
+  visitedYears: Set<number> = new Set(),
+): Promise<EntitlementSnapshot> {
+  if (visitedYears.has(year)) {
+    throw new TRPCError({
+      code: "INTERNAL_SERVER_ERROR",
+      message: `Detected recursive entitlement sync for year ${year}`,
+    });
+  }
+  visitedYears.add(year);
+
+  let previousYearEntitlement: EntitlementSnapshot | null = await db.vacationEntitlement.findUnique({
+    where: { resourceId_year: { resourceId, year: year - 1 } },
+  });
+
+  if (previousYearEntitlement) {
+    previousYearEntitlement = await syncEntitlement(
+      db,
+      resourceId,
+      year - 1,
+      defaultDays,
+      visitedYears,
+    );
+  }
+
   const entitlement = await getOrCreateEntitlement(db, resourceId, year, defaultDays);
+  const carryoverDays = previousYearEntitlement
+    ? calculateCarryoverDays(previousYearEntitlement)
+    : 0;
+  const expectedEntitledDays = defaultDays + carryoverDays;
+  const entitlementWithCarryover = (
+    entitlement.carryoverDays !== carryoverDays
+    || entitlement.entitledDays !== expectedEntitledDays
+  )
+    ? await db.vacationEntitlement.update({
+        where: { id: entitlement.id },
+        data: {
+          carryoverDays,
+          entitledDays: expectedEntitledDays,
+        },
+      })
+    : entitlement;
+  const yearStart = new Date(`${year}-01-01T00:00:00.000Z`);
+  const yearEnd = new Date(`${year}-12-31T00:00:00.000Z`);
+  const holidayContext = await loadResourceHolidayContext(db, resourceId, yearStart, yearEnd);
 
   const vacations = await db.vacation.findMany({
     where: {
       resourceId,
       type: { in: BALANCE_TYPES },
-      startDate: { gte: new Date(`${year}-01-01`), lte: new Date(`${year}-12-31`) },
+      startDate: { lte: yearEnd },
+      endDate: { gte: yearStart },
       status: { in: [VacationStatus.APPROVED, VacationStatus.PENDING] },
     },
     select: { startDate: true, endDate: true, status: true, isHalfDay: true },
@@ -86,13 +137,22 @@ async function syncEntitlement(
   let pendingDays = 0;
 
   for (const v of vacations) {
-    const days = countDays(v.startDate, v.endDate, v.isHalfDay);
+    const days = countVacationChargeableDays({
+      vacation: v,
+      periodStart: yearStart,
+      periodEnd: yearEnd,
+      countryCode: holidayContext.countryCode,
+      federalState: holidayContext.federalState,
+      metroCityName: holidayContext.metroCityName,
+      calendarHolidayStrings: holidayContext.calendarHolidayStrings,
+      publicHolidayStrings: holidayContext.publicHolidayStrings,
+    });
     if (v.status === VacationStatus.APPROVED) usedDays += days;
     else pendingDays += days;
   }
 
   return db.vacationEntitlement.update({
-    where: { id: entitlement.id },
+    where: { id: entitlementWithCarryover.id },
     data: { usedDays, pendingDays },
   });
 }
@@ -134,17 +194,23 @@ export const entitlementRouter = createTRPCRouter({
       const entitlement = await syncEntitlement(ctx.db, input.resourceId, input.year, defaultDays);
 
       // Also count sick days (informational)
-      const sickVacations = await ctx.db.vacation.findMany({
+      const sickVacationsResult = await ctx.db.vacation.findMany({
         where: {
           resourceId: input.resourceId,
           type: VacationType.SICK,
           status: VacationStatus.APPROVED,
-          startDate: { gte: new Date(`${input.year}-01-01`), lte: new Date(`${input.year}-12-31`) },
+          startDate: { lte: new Date(`${input.year}-12-31T00:00:00.000Z`) },
+          endDate: { gte: new Date(`${input.year}-01-01T00:00:00.000Z`) },
         },
         select: { startDate: true, endDate: true, isHalfDay: true },
       });
+      const sickVacations = Array.isArray(sickVacationsResult) ? sickVacationsResult : [];
       const sickDays = sickVacations.reduce(
-        (sum, v) => sum + countDays(v.startDate, v.endDate, v.isHalfDay),
+        (sum, v) => sum + countCalendarDaysInPeriod(
+          v,
+          new Date(`${input.year}-01-01T00:00:00.000Z`),
+          new Date(`${input.year}-12-31T00:00:00.000Z`),
+        ),
         0,
       );
 
@@ -171,7 +237,7 @@ export const entitlementRouter = createTRPCRouter({
     .query(async ({ ctx, input }) => {
       const settings = await ctx.db.systemSettings.findUnique({ where: { id: "singleton" } });
       const defaultDays = settings?.vacationDefaultDays ?? 28;
-      return getOrCreateEntitlement(ctx.db, input.resourceId, input.year, defaultDays);
+      return syncEntitlement(ctx.db, input.resourceId, input.year, defaultDays);
     }),
 
   /**
diff --git a/packages/api/src/router/holiday-calendar.ts b/packages/api/src/router/holiday-calendar.ts
new file mode 100644
index 0000000..e0d3fff
--- /dev/null
+++ b/packages/api/src/router/holiday-calendar.ts
@@ -0,0 +1,471 @@
+import {
+  CreateHolidayCalendarEntrySchema,
+  CreateHolidayCalendarSchema,
+  type HolidayCalendarScopeInput,
+  PreviewResolvedHolidaysSchema,
+  UpdateHolidayCalendarEntrySchema,
+  UpdateHolidayCalendarSchema,
+} from "@capakraken/shared";
+import { TRPCError } from "@trpc/server";
+import { z } from "zod";
+import { findUniqueOrThrow } from "../db/helpers.js";
+import { createAuditEntry } from "../lib/audit.js";
+import { asHolidayResolverDb, getResolvedCalendarHolidays } from "../lib/holiday-availability.js";
+import { createTRPCRouter, adminProcedure, protectedProcedure, type TRPCContext } from "../trpc.js";
+
+type HolidayCalendarScope = HolidayCalendarScopeInput;
+
+const HOLIDAY_SCOPE = {
+  COUNTRY: "COUNTRY",
+  STATE: "STATE",
+  CITY: "CITY",
+} as const satisfies Record<HolidayCalendarScope, HolidayCalendarScope>;
+
+type HolidayCalendarDb = TRPCContext["db"] & {
+  holidayCalendar: {
+    findFirst: (args: unknown) => Promise<{ id: string } | null>;
+    findMany: (args: unknown) => Promise<any[]>;
+    findUnique: (args: unknown) => Promise<any | null>;
+    create: (args: unknown) => Promise<any>;
+    update: (args: unknown) => Promise<any>;
+    delete: (args: unknown) => Promise<any>;
+  };
+  holidayCalendarEntry: {
+    findFirst: (args: unknown) => Promise<{ id: string } | null>;
+    findUnique: (args: unknown) => Promise<any | null>;
+    create: (args: unknown) => Promise<any>;
+    update: (args: unknown) => Promise<any>;
+    delete: (args: unknown) => Promise<any>;
+  };
+};
+
+function asHolidayCalendarDb(db: TRPCContext["db"]): HolidayCalendarDb {
+  return db as unknown as HolidayCalendarDb;
+}
+
+function clampDate(date: Date): Date {
+  const value = new Date(date);
+  value.setUTCHours(0, 0, 0, 0);
+  return value;
+}
+
+async function assertEntryDateAvailable(
+  db: HolidayCalendarDb,
+  input: {
+    holidayCalendarId: string;
+    date: Date;
+  },
+  ignoreId?: string,
+) {
+  const existing = await db.holidayCalendarEntry.findFirst({
+    where: {
+      holidayCalendarId: input.holidayCalendarId,
+      date: clampDate(input.date),
+      ...(ignoreId ? { id: { not: ignoreId } } : {}),
+    },
+    select: { id: true },
+  });
+
+  if (existing) {
+    throw new TRPCError({
+      code: "CONFLICT",
+      message: "A holiday entry for this calendar and date already exists",
+    });
+  }
+}
+
+async function assertScopeConsistency(
+  db: HolidayCalendarDb,
+  input: {
+    scopeType: HolidayCalendarScope;
+    countryId: string;
+    stateCode?: string | null;
+    metroCityId?: string | null;
+  },
+  ignoreId?: string,
+) {
+  if (input.scopeType === HOLIDAY_SCOPE.COUNTRY) {
+    if (input.stateCode || input.metroCityId) {
+      throw new TRPCError({
+        code: "BAD_REQUEST",
+        message: "Country calendars may not define a state or metro city",
+      });
+    }
+  }
+
+  if (input.scopeType === HOLIDAY_SCOPE.STATE) {
+    if (!input.stateCode) {
+      throw new TRPCError({
+        code: "BAD_REQUEST",
+        message: "State calendars require a state code",
+      });
+    }
+    if (input.metroCityId) {
+      throw new TRPCError({
+        code: "BAD_REQUEST",
+        message: "State calendars may not define a metro city",
+      });
+    }
+  }
+
+  if (input.scopeType === HOLIDAY_SCOPE.CITY) {
+    if (!input.metroCityId) {
+      throw new TRPCError({
+        code: "BAD_REQUEST",
+        message: "City calendars require a metro city",
+      });
+    }
+
+    const metroCity = await findUniqueOrThrow(
+      db.metroCity.findUnique({
+        where: { id: input.metroCityId },
+        select: { id: true, countryId: true },
+      }),
+      "Metro city",
+    );
+
+    if (metroCity.countryId !== input.countryId) {
+      throw new TRPCError({
+        code: "BAD_REQUEST",
+        message: "Metro city must belong to the selected country",
+      });
+    }
+  }
+
+  const existing = await db.holidayCalendar.findFirst({
+    where: {
+      countryId: input.countryId,
+      scopeType: input.scopeType,
+      ...(input.scopeType === HOLIDAY_SCOPE.STATE ? { stateCode: input.stateCode ?? null } : {}),
+      ...(input.scopeType === HOLIDAY_SCOPE.CITY ? { metroCityId: input.metroCityId ?? null } : {}),
+      ...(ignoreId ? { id: { not: ignoreId } } : {}),
+    },
+    select: { id: true },
+  });
+
+  if (existing) {
+    throw new TRPCError({
+      code: "CONFLICT",
+      message: "A holiday calendar for this exact scope already exists",
+    });
+  }
+}
+
+export const holidayCalendarRouter = createTRPCRouter({
+  listCalendars: protectedProcedure
+    .input(z.object({ includeInactive: z.boolean().optional() }).optional())
+    .query(async ({ ctx, input }) => {
+      const db = asHolidayCalendarDb(ctx.db);
+      const where = input?.includeInactive ? undefined : { isActive: true };
+
+      return db.holidayCalendar.findMany({
+        ...(where ? { where } : {}),
+        include: {
+          country: { select: { id: true, code: true, name: true } },
+          metroCity: { select: { id: true, name: true } },
+          _count: { select: { entries: true } },
+          entries: { orderBy: [{ date: "asc" }, { name: "asc" }] },
+        },
+        orderBy: [
+          { country: { name: "asc" } },
+          { scopeType: "asc" },
+          { priority: "desc" },
+          { name: "asc" },
+        ],
+      });
+    }),
+
+  getCalendarById: protectedProcedure
+    .input(z.object({ id: z.string() }))
+    .query(async ({ ctx, input }) => {
+      const db = asHolidayCalendarDb(ctx.db);
+
+      return findUniqueOrThrow(
+        db.holidayCalendar.findUnique({
+          where: { id: input.id },
+          include: {
+            country: { select: { id: true, code: true, name: true } },
+            metroCity: { select: { id: true, name: true } },
+            entries: { orderBy: [{ date: "asc" }, { name: "asc" }] },
+          },
+        }),
+        "Holiday calendar",
+      );
+    }),
+
+  createCalendar: adminProcedure
+    .input(CreateHolidayCalendarSchema)
+    .mutation(async ({ ctx, input }) => {
+      const db = asHolidayCalendarDb(ctx.db);
+
+      await findUniqueOrThrow(
+        ctx.db.country.findUnique({
+          where: { id: input.countryId },
+          select: { id: true, name: true },
+        }),
+        "Country",
+      );
+
+      await assertScopeConsistency(db, {
+        scopeType: input.scopeType,
+        countryId: input.countryId,
+        stateCode: input.stateCode?.trim().toUpperCase() ?? null,
+        metroCityId: input.metroCityId ?? null,
+      });
+
+      const created = await db.holidayCalendar.create({
+        data: {
+          name: input.name,
+          scopeType: input.scopeType,
+          countryId: input.countryId,
+          ...(input.stateCode ? { stateCode: input.stateCode.trim().toUpperCase() } : {}),
+          ...(input.metroCityId ? { metroCityId: input.metroCityId } : {}),
+          isActive: input.isActive ?? true,
+          priority: input.priority ?? 0,
+        },
+        include: {
+          country: { select: { id: true, code: true, name: true } },
+          metroCity: { select: { id: true, name: true } },
+          entries: true,
+        },
+      });
+
+      void createAuditEntry({
+        db: ctx.db,
+        entityType: "HolidayCalendar",
+        entityId: created.id,
+        entityName: created.name,
+        action: "CREATE",
+        userId: ctx.dbUser?.id,
+        after: created as unknown as Record<string, unknown>,
+        source: "ui",
+      });
+
+      return created;
+    }),
+
+  updateCalendar: adminProcedure
+    .input(z.object({ id: z.string(), data: UpdateHolidayCalendarSchema }))
+    .mutation(async ({ ctx, input }) => {
+      const db = asHolidayCalendarDb(ctx.db);
+      const existing = await findUniqueOrThrow<any>(
+        db.holidayCalendar.findUnique({ where: { id: input.id } }),
+        "Holiday calendar",
+      );
+
+      const stateCode = input.data.stateCode === undefined
+        ? existing.stateCode
+        : input.data.stateCode?.trim().toUpperCase() ?? null;
+      const metroCityId = input.data.metroCityId === undefined
+        ? existing.metroCityId
+        : input.data.metroCityId ?? null;
+
+      await assertScopeConsistency(db, {
+        scopeType: existing.scopeType,
+        countryId: existing.countryId,
+        stateCode,
+        metroCityId,
+      }, existing.id);
+
+      const updated = await db.holidayCalendar.update({
+        where: { id: input.id },
+        data: {
+          ...(input.data.name !== undefined ? { name: input.data.name } : {}),
+          ...(input.data.stateCode !== undefined ? { stateCode } : {}),
+          ...(input.data.metroCityId !== undefined ? { metroCityId } : {}),
+          ...(input.data.isActive !== undefined ? { isActive: input.data.isActive } : {}),
+          ...(input.data.priority !== undefined ? { priority: input.data.priority } : {}),
+        },
+        include: {
+          country: { select: { id: true, code: true, name: true } },
+          metroCity: { select: { id: true, name: true } },
+          entries: { orderBy: [{ date: "asc" }, { name: "asc" }] },
+        },
+      });
+
+      void createAuditEntry({
+        db: ctx.db,
+        entityType: "HolidayCalendar",
+        entityId: updated.id,
+        entityName: updated.name,
+        action: "UPDATE",
+        userId: ctx.dbUser?.id,
+        before: existing as unknown as Record<string, unknown>,
+        after: updated as unknown as Record<string, unknown>,
+        source: "ui",
+      });
+
+      return updated;
+    }),
+
+  deleteCalendar: adminProcedure
+    .input(z.object({ id: z.string() }))
+    .mutation(async ({ ctx, input }) => {
+      const db = asHolidayCalendarDb(ctx.db);
+      const existing = await findUniqueOrThrow<any>(
+        db.holidayCalendar.findUnique({
+          where: { id: input.id },
+          include: { entries: true },
+        }),
+        "Holiday calendar",
+      );
+
+      await db.holidayCalendar.delete({ where: { id: input.id } });
+
+      void createAuditEntry({
+        db: ctx.db,
+        entityType: "HolidayCalendar",
+        entityId: existing.id,
+        entityName: existing.name,
+        action: "DELETE",
+        userId: ctx.dbUser?.id,
+        before: existing as unknown as Record<string, unknown>,
+        source: "ui",
+      });
+
+      return { success: true };
+    }),
+
+  createEntry: adminProcedure
+    .input(CreateHolidayCalendarEntrySchema)
+    .mutation(async ({ ctx, input }) => {
+      const db = asHolidayCalendarDb(ctx.db);
+
+      await findUniqueOrThrow(
+        db.holidayCalendar.findUnique({
+          where: { id: input.holidayCalendarId },
+          select: { id: true, name: true },
+        }),
+        "Holiday calendar",
+      );
+
+      await assertEntryDateAvailable(db, {
+        holidayCalendarId: input.holidayCalendarId,
+        date: input.date,
+      });
+
+      const created = await db.holidayCalendarEntry.create({
+        data: {
+          holidayCalendarId: input.holidayCalendarId,
+          date: clampDate(input.date),
+          name: input.name,
+          isRecurringAnnual: input.isRecurringAnnual ?? false,
+          ...(input.source ? { source: input.source } : {}),
+        },
+      });
+
+      void createAuditEntry({
+        db: ctx.db,
+        entityType: "HolidayCalendarEntry",
+        entityId: created.id,
+        entityName: created.name,
+        action: "CREATE",
+        userId: ctx.dbUser?.id,
+        after: created as unknown as Record<string, unknown>,
+        source: "ui",
+      });
+
+      return created;
+    }),
+
+  updateEntry: adminProcedure
+    .input(z.object({ id: z.string(), data: UpdateHolidayCalendarEntrySchema }))
+    .mutation(async ({ ctx, input }) => {
+      const db = asHolidayCalendarDb(ctx.db);
+      const existing = await findUniqueOrThrow<any>(
+        db.holidayCalendarEntry.findUnique({ where: { id: input.id } }),
+        "Holiday calendar entry",
+      );
+      const nextDate = input.data.date !== undefined ? clampDate(input.data.date) : existing.date;
+
+      await assertEntryDateAvailable(db, {
+        holidayCalendarId: existing.holidayCalendarId,
+        date: nextDate,
+      }, existing.id);
+
+      const updated = await db.holidayCalendarEntry.update({
+        where: { id: input.id },
+        data: {
+          ...(input.data.date !== undefined ? { date: nextDate } : {}),
+          ...(input.data.name !== undefined ? { name: input.data.name } : {}),
+          ...(input.data.isRecurringAnnual !== undefined ? { isRecurringAnnual: input.data.isRecurringAnnual } : {}),
+          ...(input.data.source !== undefined ? { source: input.data.source ?? null } : {}),
+        },
+      });
+
+      void createAuditEntry({
+        db: ctx.db,
+        entityType: "HolidayCalendarEntry",
+        entityId: updated.id,
+        entityName: updated.name,
+        action: "UPDATE",
+        userId: ctx.dbUser?.id,
+        before: existing as unknown as Record<string, unknown>,
+        after: updated as unknown as Record<string, unknown>,
+        source: "ui",
+      });
+
+      return updated;
+    }),
+
+  deleteEntry: adminProcedure
+    .input(z.object({ id: z.string() }))
+    .mutation(async ({ ctx, input }) => {
+      const db = asHolidayCalendarDb(ctx.db);
+      const existing = await findUniqueOrThrow<any>(
+        db.holidayCalendarEntry.findUnique({ where: { id: input.id } }),
+        "Holiday calendar entry",
+      );
+
+      await db.holidayCalendarEntry.delete({ where: { id: input.id } });
+
+      void createAuditEntry({
+        db: ctx.db,
+        entityType: "HolidayCalendarEntry",
+        entityId: existing.id,
+        entityName: existing.name,
+        action: "DELETE",
+        userId: ctx.dbUser?.id,
+        before: existing as unknown as Record<string, unknown>,
+        source: "ui",
+      });
+
+      return { success: true };
+    }),
+
+  previewResolvedHolidays: protectedProcedure
+    .input(PreviewResolvedHolidaysSchema)
+    .query(async ({ ctx, input }) => {
+      const country = await findUniqueOrThrow(
+        ctx.db.country.findUnique({
+          where: { id: input.countryId },
+          select: { code: true },
+        }),
+        "Country",
+      );
+
+      const metroCity = input.metroCityId
+        ? await ctx.db.metroCity.findUnique({
+            where: { id: input.metroCityId },
+            select: { name: true },
+          })
+        : null;
+
+      const resolved = await getResolvedCalendarHolidays(asHolidayResolverDb(ctx.db), {
+        periodStart: new Date(`${input.year}-01-01T00:00:00.000Z`),
+        periodEnd: new Date(`${input.year}-12-31T00:00:00.000Z`),
+        countryId: input.countryId,
+        countryCode: country.code,
+        federalState: input.stateCode?.trim().toUpperCase() ?? null,
+        metroCityId: input.metroCityId ?? null,
+        metroCityName: metroCity?.name ?? null,
+      });
+
+      return resolved.map((holiday) => ({
+        date: holiday.date,
+        name: holiday.name,
+        scopeType: holiday.scope,
+        calendarName: holiday.calendarName,
+      }));
+    }),
+});
diff --git a/packages/api/src/router/index.ts b/packages/api/src/router/index.ts
index 6564a96..3add205 100644
--- a/packages/api/src/router/index.ts
+++ b/packages/api/src/router/index.ts
@@ -15,6 +15,7 @@ import { effortRuleRouter } from "./effort-rule.js";
 import { experienceMultiplierRouter } from "./experience-multiplier.js";
 import { estimateRouter } from "./estimate.js";
 import { entitlementRouter } from "./entitlement.js";
+import { holidayCalendarRouter } from "./holiday-calendar.js";
 import { importExportRouter } from "./import-export.js";
 import { insightsRouter } from "./insights.js";
 import { managementLevelRouter } from "./management-level.js";
@@ -55,6 +56,7 @@ export const appRouter = createTRPCRouter({
   insights: insightsRouter,
   vacation: vacationRouter,
   entitlement: entitlementRouter,
+  holidayCalendar: holidayCalendarRouter,
   notification: notificationRouter,
   settings: settingsRouter,
   country: countryRouter,
diff --git a/packages/api/src/router/project.ts b/packages/api/src/router/project.ts
index 1f474a1..33e3c73 100644
--- a/packages/api/src/router/project.ts
+++ b/packages/api/src/router/project.ts
@@ -2,6 +2,7 @@ import {
   countPlanningEntries,
   listAssignmentBookings,
 } from "@capakraken/application";
+import type { WeekdayAvailability } from "@capakraken/shared";
 import { BlueprintTarget, CreateProjectSchema, FieldType, PermissionKey, ProjectStatus, UpdateProjectSchema } from "@capakraken/shared";
 import { TRPCError } from "@trpc/server";
 import { z } from "zod";
@@ -17,6 +18,10 @@ import { generateGeminiImage, isGeminiConfigured, parseGeminiError } from "../ge
 import { invalidateDashboardCache } from "../lib/cache.js";
 import { dispatchWebhooks } from "../lib/webhook-dispatcher.js";
 import { validateImageDataUrl } from "../lib/image-validation.js";
+import {
+  calculateEffectiveBookedHours,
+  loadResourceDailyAvailabilityContexts,
+} from "../lib/resource-capacity.js";
 
 const MAX_COVER_SIZE = 4 * 1024 * 1024; // 4 MB base64 string length limit (client compresses before upload)
 
@@ -127,20 +132,53 @@ export const projectRouter = createTRPCRouter({
 
       const assignments = await ctx.db.assignment.findMany({
         where: { projectId: input.projectId, status: { not: "CANCELLED" } },
-        include: { resource: { include: { country: { select: { code: true } } } } },
+        include: {
+          resource: {
+            include: {
+              country: { select: { id: true, code: true } },
+              metroCity: { select: { id: true, name: true } },
+            },
+          },
+        },
       });
+      const periodStart = assignments.length > 0
+        ? new Date(Math.min(...assignments.map((assignment) => assignment.startDate.getTime())))
+        : new Date();
+      const periodEnd = assignments.length > 0
+        ? new Date(Math.max(...assignments.map((assignment) => assignment.endDate.getTime())))
+        : new Date();
+      const contexts = await loadResourceDailyAvailabilityContexts(
+        ctx.db,
+        assignments.map((assignment) => ({
+          id: assignment.resource.id,
+          availability: assignment.resource.availability as unknown as WeekdayAvailability,
+          countryId: assignment.resource.country?.id ?? assignment.resource.countryId,
+          countryCode: assignment.resource.country?.code,
+          federalState: assignment.resource.federalState,
+          metroCityId: assignment.resource.metroCity?.id ?? assignment.resource.metroCityId,
+          metroCityName: assignment.resource.metroCity?.name,
+        })),
+        periodStart,
+        periodEnd,
+      );
 
       const mapped: ShoringAssignment[] = assignments.map((a) => {
-        const start = new Date(a.startDate);
-        const end = new Date(a.endDate);
-        const diffMs = end.getTime() - start.getTime();
-        const diffDays = Math.max(1, Math.round(diffMs / (1000 * 60 * 60 * 24)) + 1);
-        const workingDays = Math.round(diffDays / 7 * 5);
+        const workingDays = a.hoursPerDay > 0
+          ? calculateEffectiveBookedHours({
+            availability: a.resource.availability as unknown as WeekdayAvailability,
+            startDate: a.startDate,
+            endDate: a.endDate,
+            hoursPerDay: a.hoursPerDay,
+            periodStart,
+            periodEnd,
+            context: contexts.get(a.resourceId ?? a.resource.id),
+          }) / a.hoursPerDay
+          : 0;
         return {
           resourceId: a.resourceId,
           countryCode: a.resource.country?.code ?? null,
           hoursPerDay: a.hoursPerDay,
-          workingDays: Math.max(1, workingDays),
+          workingDays: Math.max(0, workingDays),
         };
       });
 
diff --git a/packages/api/src/router/report.ts b/packages/api/src/router/report.ts
index 2060b37..5cf1faf 100644
--- a/packages/api/src/router/report.ts
+++ b/packages/api/src/router/report.ts
@@ -1,6 +1,20 @@
-import { z } from "zod";
+import { Prisma } from "@capakraken/db";
+import {
+  isChargeabilityActualBooking,
+  isChargeabilityRelevantProject,
+  listAssignmentBookings,
+} from "@capakraken/application";
+import type { WeekdayAvailability } from "@capakraken/shared";
 import { createTRPCRouter, controllerProcedure } from "../trpc.js";
+import {
+  calculateEffectiveAvailableHours,
+  calculateEffectiveBookedHours,
+  countEffectiveWorkingDays,
+  getAvailabilityHoursForDate,
+  loadResourceDailyAvailabilityContexts,
+} from "../lib/resource-capacity.js";
 import { TRPCError } from "@trpc/server";
+import { z } from "zod";
 
 // ─── Column Definitions ──────────────────────────────────────────────────────
 
@@ -30,6 +44,7 @@ const RESOURCE_COLUMNS: ColumnDef[] = [
   { key: "departed", label: "Departed", dataType: "boolean" },
   { key: "postalCode", label: "Postal Code", dataType: "string" },
   { key: "federalState", label: "Federal State", dataType: "string" },
+  { key: "country.code", label: "Country Code", dataType: "string", prismaPath: "country" },
   { key: "country.name", label: "Country", dataType: "string", prismaPath: "country" },
   { key: "metroCity.name", label: "Metro City", dataType: "string", prismaPath: "metroCity" },
   { key: "orgUnit.name", label: "Org Unit", dataType: "string", prismaPath: "orgUnit" },
@@ -49,6 +64,7 @@ const PROJECT_COLUMNS: ColumnDef[] = [
   { key: "status", label: "Status", dataType: "string" },
   { key: "winProbability", label: "Win Probability (%)", dataType: "number" },
   { key: "budgetCents", label: "Budget (cents)", dataType: "number" },
+  { key: "clientId", label: "Client ID", dataType: "string" },
   { key: "startDate", label: "Start Date", dataType: "date" },
   { key: "endDate", label: "End Date", dataType: "date" },
   { key: "responsiblePerson", label: "Responsible Person", dataType: "string" },
@@ -61,10 +77,19 @@ const PROJECT_COLUMNS: ColumnDef[] = [
 
 const ASSIGNMENT_COLUMNS: ColumnDef[] = [
   { key: "id", label: "ID", dataType: "string" },
+  { key: "resourceId", label: "Resource ID", dataType: "string" },
+  { key: "projectId", label: "Project ID", dataType: "string" },
   { key: "resource.displayName", label: "Resource", dataType: "string", prismaPath: "resource" },
   { key: "resource.eid", label: "Resource EID", dataType: "string", prismaPath: "resource" },
+  { key: "resource.chapter", label: "Resource Chapter", dataType: "string", prismaPath: "resource" },
+  { key: "resource.country.code", label: "Resource Country Code", dataType: "string", prismaPath: "resource" },
+  { key: "resource.federalState", label: "Resource State", dataType: "string", prismaPath: "resource" },
+  { key: "resource.country.name", label: "Resource Country", dataType: "string", prismaPath: "resource" },
+  { key: "resource.metroCity.name", label: "Resource City", dataType: "string", prismaPath: "resource" },
   { key: "project.name", label: "Project", dataType: "string", prismaPath: "project" },
   { key: "project.shortCode", label: "Project Code", dataType: "string", prismaPath: "project" },
+  { key: "project.status", label: "Project Status", dataType: "string", prismaPath: "project" },
+  { key: "project.client.name", label: "Project Client", dataType: "string", prismaPath: "project" },
   { key: "startDate", label: "Start Date", dataType: "date" },
   { key: "endDate", label: "End Date", dataType: "date" },
   { key: "hoursPerDay", label: "Hours/Day", dataType: "number" },
@@ -77,10 +102,55 @@ const ASSIGNMENT_COLUMNS: ColumnDef[] = [
   { key: "updatedAt", label: "Updated At", dataType: "date" },
 ];
 
+const RESOURCE_MONTH_COLUMNS: ColumnDef[] = [
+  { key: "id", label: "Row ID", dataType: "string" },
+  { key: "resourceId", label: "Resource ID", dataType: "string" },
+  { key: "monthKey", label: "Month", dataType: "string" },
+  { key: "periodStart", label: "Period Start", dataType: "date" },
+  { key: "periodEnd", label: "Period End", dataType: "date" },
+  { key: "eid", label: "Employee ID", dataType: "string" },
+  { key: "displayName", label: "Name", dataType: "string" },
+  { key: "email", label: "Email", dataType: "string" },
+  { key: "chapter", label: "Chapter", dataType: "string" },
+  { key: "resourceType", label: "Resource Type", dataType: "string" },
+  { key: "isActive", label: "Active", dataType: "boolean" },
+  { key: "chgResponsibility", label: "Chg Responsibility", dataType: "boolean" },
+  { key: "rolledOff", label: "Rolled Off", dataType: "boolean" },
+  { key: "departed", label: "Departed", dataType: "boolean" },
+  { key: "countryCode", label: "Country Code", dataType: "string" },
+  { key: "countryName", label: "Country", dataType: "string" },
+  { key: "federalState", label: "Federal State", dataType: "string" },
+  { key: "metroCityName", label: "Metro City", dataType: "string" },
+  { key: "orgUnitName", label: "Org Unit", dataType: "string" },
+  { key: "managementLevelGroupName", label: "Mgmt Level Group", dataType: "string" },
+  { key: "managementLevelName", label: "Mgmt Level", dataType: "string" },
+  { key: "fte", label: "FTE", dataType: "number" },
+  { key: "lcrCents", label: "LCR (cents)", dataType: "number" },
+  { key: "ucrCents", label: "UCR (cents)", dataType: "number" },
+  { key: "currency", label: "Currency", dataType: "string" },
+  { key: "monthlyChargeabilityTargetPct", label: "Target Chargeability (%)", dataType: "number" },
+  { key: "monthlyTargetHours", label: "Target Hours", dataType: "number" },
+  { key: "monthlyBaseWorkingDays", label: "Base Working Days", dataType: "number" },
+  { key: "monthlyEffectiveWorkingDays", label: "Effective Working Days", dataType: "number" },
+  { key: "monthlyBaseAvailableHours", label: "Base Available Hours", dataType: "number" },
+  { key: "monthlySahHours", label: "SAH", dataType: "number" },
+  { key: "monthlyPublicHolidayCount", label: "Holiday Dates", dataType: "number" },
+  { key: "monthlyPublicHolidayWorkdayCount", label: "Holiday Workdays", dataType: "number" },
+  { key: "monthlyPublicHolidayHoursDeduction", label: "Holiday Hours Deduction", dataType: "number" },
+  { key: "monthlyAbsenceDayEquivalent", label: "Absence Day Equivalent", dataType: "number" },
+  { key: "monthlyAbsenceHoursDeduction", label: "Absence Hours Deduction", dataType: "number" },
+  { key: "monthlyActualBookedHours", label: "Actual Booked Hours", dataType: "number" },
+  { key: "monthlyExpectedBookedHours", label: "Expected Booked Hours", dataType: "number" },
+  { key: "monthlyActualChargeabilityPct", label: "Actual Chargeability (%)", dataType: "number" },
+  { key: "monthlyExpectedChargeabilityPct", label: "Expected Chargeability (%)", dataType: "number" },
+  { key: "monthlyUnassignedHours", label: "Unassigned Hours", dataType: "number" },
+];
+
 const COLUMN_MAP: Record<EntityKey, ColumnDef[]> = {
   resource: RESOURCE_COLUMNS,
   project: PROJECT_COLUMNS,
   assignment: ASSIGNMENT_COLUMNS,
+  resource_month: RESOURCE_MONTH_COLUMNS,
 };
 
 // ─── Helpers ────────────────────────────────────────────────────────────────
@@ -89,6 +159,7 @@ const ENTITY_MAP = {
   resource: "resource",
   project: "project",
   assignment: "assignment",
+  resource_month: "resource_month",
 } as const;
 
 type EntityKey = keyof typeof ENTITY_MAP;
@@ -110,6 +181,7 @@ const ALLOWED_SCALAR_FIELDS: Record<EntityKey, Set<string>> = {
     "id", "startDate", "endDate", "hoursPerDay", "percentage",
     "role", "dailyCostCents", "status", "createdAt", "updatedAt",
   ]),
+  resource_month: new Set(RESOURCE_MONTH_COLUMNS.map((column) => column.key)),
 };
 
 function getValidScalarField(entity: EntityKey, field: string): string | null {
@@ -132,15 +204,14 @@ function buildSelect(entity: EntityKey, columns: string[]): Record<string, unkno
     if (!def) continue;
 
     if (colKey.includes(".")) {
-      // Relation column, e.g. "country.name" => select: { country: { select: { name: true } } }
       const relationName = def.prismaPath ?? colKey.split(".")[0]!;
-      const fieldName = colKey.split(".").slice(1).join(".");
       const existing = select[relationName];
-      if (existing && typeof existing === "object" && existing !== null && "select" in existing) {
-        (existing as { select: Record<string, boolean> }).select[fieldName] = true;
-      } else {
-        select[relationName] = { select: { [fieldName]: true } };
-      }
+      const fieldSegments = colKey.split(".").slice(1);
+      const relationSelect = existing && typeof existing === "object" && existing !== null && "select" in existing
+        ? (existing as { select: Record<string, unknown> }).select
+        : {};
+      mergeSelectPath(relationSelect, fieldSegments);
+      select[relationName] = { select: relationSelect };
     } else {
       select[colKey] = true;
     }
@@ -149,6 +220,29 @@ function buildSelect(entity: EntityKey, columns: string[]): Record<string, unkno
   return select;
 }
 
+function mergeSelectPath(
+  target: Record<string, unknown>,
+  segments: string[],
+): void {
+  const [head, ...tail] = segments;
+  if (!head) {
+    return;
+  }
+
+  if (tail.length === 0) {
+    target[head] = true;
+    return;
+  }
+
+  const existing = target[head];
+  const nestedSelect = existing && typeof existing === "object" && existing !== null && "select" in existing
+    ? (existing as { select: Record<string, unknown> }).select
+    : {};
+
+  mergeSelectPath(nestedSelect, tail);
+  target[head] = { select: nestedSelect };
+}
+
 /**
  * Build a Prisma `where` from the filter array.
  * Only scalar top-level fields are allowed for safety.
@@ -246,6 +340,8 @@ function csvEscape(value: unknown): string {
 
 // ─── Input Schema ───────────────────────────────────────────────────────────
 
+const reportEntitySchema = z.enum(["resource", "project", "assignment", "resource_month"]);
+
 const FilterSchema = z.object({
   field: z.string().min(1),
   op: z.enum(["eq", "neq", "gt", "lt", "gte", "lte", "contains", "in"]),
@@ -253,24 +349,171 @@ const FilterSchema = z.object({
 });
 
 const ReportInputSchema = z.object({
-  entity: z.enum(["resource", "project", "assignment"]),
+  entity: reportEntitySchema,
   columns: z.array(z.string()).min(1),
   filters: z.array(FilterSchema).default([]),
   groupBy: z.string().optional(),
   sortBy: z.string().optional(),
   sortDir: z.enum(["asc", "desc"]).default("asc"),
+  periodMonth: z.string().regex(/^\d{4}-\d{2}$/).optional(),
   limit: z.number().int().min(1).max(5000).default(50),
   offset: z.number().int().min(0).default(0),
 });
 
+const ReportTemplateConfigSchema = ReportInputSchema.omit({ limit: true, offset: true });
+
+const ReportTemplateEntity = {
+  RESOURCE: "RESOURCE",
+  PROJECT: "PROJECT",
+  ASSIGNMENT: "ASSIGNMENT",
+  RESOURCE_MONTH: "RESOURCE_MONTH",
+} as const;
+
+type ReportTemplateEntity = (typeof ReportTemplateEntity)[keyof typeof ReportTemplateEntity];
+
+type ReportTemplateRecord = {
+  id: string;
+  name: string;
+  description: string | null;
+  entity: ReportTemplateEntity;
+  config: unknown;
+  isShared: boolean;
+  ownerId: string;
+  updatedAt: Date;
+};
+
+function getReportTemplateDelegate(db: unknown) {
+  return (db as {
+    reportTemplate: {
+      findMany: (args: unknown) => Promise<ReportTemplateRecord[]>;
+      findUnique: (args: unknown) => Promise<{ ownerId: string } | null>;
+      update: (args: unknown) => Promise<{ id: string; updatedAt: Date }>;
+      upsert: (args: unknown) => Promise<{ id: string; updatedAt: Date }>;
+      delete: (args: unknown) => Promise<unknown>;
+    };
+  }).reportTemplate;
+}
+
 // ─── Router ──────────────────────────────────────────────────────────────────
 
 export const reportRouter = createTRPCRouter({
+  listTemplates: controllerProcedure.query(async ({ ctx }) => {
+    const reportTemplate = getReportTemplateDelegate(ctx.db);
+    const templates = await reportTemplate.findMany({
+      where: {
+        OR: [
+          { ownerId: ctx.dbUser!.id },
+          { isShared: true },
+        ],
+      },
+      orderBy: [{ name: "asc" }],
+      select: {
+        id: true,
+        name: true,
+        description: true,
+        entity: true,
+        config: true,
+        isShared: true,
+        ownerId: true,
+        updatedAt: true,
+      },
+    });
+
+    return templates.map((template: ReportTemplateRecord) => ({
+      id: template.id,
+      name: template.name,
+      description: template.description,
+      entity: fromTemplateEntity(template.entity),
+      config: ReportTemplateConfigSchema.parse(template.config),
+      isShared: template.isShared,
+      isOwner: template.ownerId === ctx.dbUser!.id,
+      updatedAt: template.updatedAt,
+    }));
+  }),
+
+  saveTemplate: controllerProcedure
+    .input(z.object({
+      id: z.string().optional(),
+      name: z.string().trim().min(1).max(120),
+      description: z.string().trim().max(500).optional(),
+      isShared: z.boolean().default(false),
+      config: ReportTemplateConfigSchema,
+    }))
+    .mutation(async ({ ctx, input }) => {
+      const reportTemplate = getReportTemplateDelegate(ctx.db);
+      const payload = input.config as unknown as Prisma.InputJsonValue;
+      const entity = toTemplateEntity(input.config.entity);
+
+      if (input.id) {
+        const existing = await reportTemplate.findUnique({
+          where: { id: input.id },
+          select: { ownerId: true },
+        });
+
+        if (!existing || existing.ownerId !== ctx.dbUser!.id) {
+          throw new TRPCError({ code: "FORBIDDEN", message: "Template cannot be updated" });
+        }
+
+        return reportTemplate.update({
+          where: { id: input.id },
+          data: {
+            name: input.name,
+            description: input.description,
+            entity,
+            config: payload,
+            isShared: input.isShared,
+          },
+          select: { id: true, updatedAt: true },
+        });
+      }
+
+      return reportTemplate.upsert({
+        where: {
+          ownerId_name: {
+            ownerId: ctx.dbUser!.id,
+            name: input.name,
+          },
+        },
+        update: {
+          description: input.description,
+          entity,
+          config: payload,
+          isShared: input.isShared,
+        },
+        create: {
+          ownerId: ctx.dbUser!.id,
+          name: input.name,
+          description: input.description,
+          entity,
+          config: payload,
+          isShared: input.isShared,
+        },
+        select: { id: true, updatedAt: true },
+      });
+    }),
+
+  deleteTemplate: controllerProcedure
+    .input(z.object({ id: z.string() }))
+    .mutation(async ({ ctx, input }) => {
+      const reportTemplate = getReportTemplateDelegate(ctx.db);
+      const existing = await reportTemplate.findUnique({
+        where: { id: input.id },
+        select: { ownerId: true },
+      });
+
+      if (!existing || existing.ownerId !== ctx.dbUser!.id) {
+        throw new TRPCError({ code: "FORBIDDEN", message: "Template cannot be deleted" });
+      }
+
+      await reportTemplate.delete({ where: { id: input.id } });
+      return { ok: true };
+    }),
+
   /**
    * Return available columns for a given entity type.
    */
   getAvailableColumns: controllerProcedure
-    .input(z.object({ entity: z.enum(["resource", "project", "assignment"]) }))
+    .input(z.object({ entity: reportEntitySchema }))
     .query(({ input }) => {
       const columns = COLUMN_MAP[input.entity];
       if (!columns) {
@@ -285,40 +528,7 @@ export const reportRouter = createTRPCRouter({
   getReportData: controllerProcedure
     .input(ReportInputSchema)
     .query(async ({ ctx, input }) => {
-      const { entity, columns, filters, sortBy, sortDir, limit, offset } = input;
-
-      const select = buildSelect(entity, columns);
-      const where = buildWhere(entity, filters);
-
-      // Build orderBy (only scalar fields)
-      let orderBy: Record<string, string> | undefined;
-      if (sortBy) {
-        const validField = getValidScalarField(entity, sortBy);
-        if (validField) {
-          orderBy = { [validField]: sortDir };
-        }
-      }
-
-      const modelDelegate = getModelDelegate(ctx.db, entity);
-
-      const [rawRows, totalCount] = await Promise.all([
-        (modelDelegate as any).findMany({
-          select,
-          where,
-          ...(orderBy ? { orderBy } : {}),
-          take: limit,
-          skip: offset,
-        }),
-        (modelDelegate as any).count({ where }),
-      ]);
-
-      // Flatten nested relations into dot-notation keys
-      const rows = (rawRows as Record<string, unknown>[]).map((row) => flattenRow(row));
-
-      // Ensure column order matches request (plus id)
-      const outputColumns = ["id", ...columns.filter((c) => c !== "id")];
-
-      return { rows, columns: outputColumns, totalCount };
+      return executeReportQuery(ctx.db, input);
     }),
 
   /**
@@ -329,33 +539,12 @@ export const reportRouter = createTRPCRouter({
       limit: z.number().int().min(1).max(50000).default(5000),
     }))
     .mutation(async ({ ctx, input }) => {
-      const { entity, columns, filters, sortBy, sortDir, limit } = input;
-
-      const select = buildSelect(entity, columns);
-      const where = buildWhere(entity, filters);
-
-      let orderBy: Record<string, string> | undefined;
-      if (sortBy) {
-        const validField = getValidScalarField(entity, sortBy);
-        if (validField) {
-          orderBy = { [validField]: sortDir };
-        }
-      }
-
-      const modelDelegate = getModelDelegate(ctx.db, entity);
-
-      const rawRows = await (modelDelegate as any).findMany({
-        select,
-        where,
-        ...(orderBy ? { orderBy } : {}),
-        take: limit,
-      });
-
-      const rows = (rawRows as Record<string, unknown>[]).map((row) => flattenRow(row));
-      const outputColumns = ["id", ...columns.filter((c) => c !== "id")];
+      const result = await executeReportQuery(ctx.db, { ...input, offset: 0 });
+      const rows = result.rows;
+      const outputColumns = result.columns;
 
       // Build CSV
-      const entityColumns = COLUMN_MAP[entity];
+      const entityColumns = COLUMN_MAP[input.entity];
       const headerLabels = outputColumns.map((key) => {
         const def = entityColumns.find((c) => c.key === key);
         return def?.label ?? key;
@@ -372,6 +561,385 @@ export const reportRouter = createTRPCRouter({
     }),
 });
 
+type ReportInput = z.infer<typeof ReportInputSchema>;
+type FilterInput = z.infer<typeof FilterSchema>;
+
+async function executeReportQuery(
+  db: any,
+  input: ReportInput,
+): Promise<{ rows: Record<string, unknown>[]; columns: string[]; totalCount: number }> {
+  if (input.entity === "resource_month") {
+    return executeResourceMonthReport(db, input);
+  }
+
+  const { entity, columns, filters, sortBy, sortDir, limit, offset } = input;
+  const select = buildSelect(entity, columns);
+  const where = buildWhere(entity, filters);
+
+  let orderBy: Record<string, string> | undefined;
+  if (sortBy) {
+    const validField = getValidScalarField(entity, sortBy);
+    if (validField) {
+      orderBy = { [validField]: sortDir };
+    }
+  }
+
+  const modelDelegate = getModelDelegate(db, entity);
+  const [rawRows, totalCount] = await Promise.all([
+    (modelDelegate as any).findMany({
+      select,
+      where,
+      ...(orderBy ? { orderBy } : {}),
+      take: limit,
+      skip: offset,
+    }),
+    (modelDelegate as any).count({ where }),
+  ]);
+
+  const rows = (rawRows as Record<string, unknown>[]).map((row) => flattenRow(row));
+  const outputColumns = ["id", ...columns.filter((column) => column !== "id")];
+
+  return {
+    rows: rows.map((row) => pickColumns(row, outputColumns)),
+    columns: outputColumns,
+    totalCount,
+  };
+}
+
+async function executeResourceMonthReport(
+  db: any,
+  input: ReportInput,
+): Promise<{ rows: Record<string, unknown>[]; columns: string[]; totalCount: number }> {
+  const periodMonth = input.periodMonth ?? new Date().toISOString().slice(0, 7);
+  const [year, month] = periodMonth.split("-").map(Number) as [number, number];
+  const periodStart = new Date(Date.UTC(year, month - 1, 1));
+  const periodEnd = new Date(Date.UTC(year, month, 0));
+
+  const resources = await db.resource.findMany({
+    select: {
+      id: true,
+      eid: true,
+      displayName: true,
+      email: true,
+      chapter: true,
+      resourceType: true,
+      isActive: true,
+      chgResponsibility: true,
+      rolledOff: true,
+      departed: true,
+      lcrCents: true,
+      ucrCents: true,
+      currency: true,
+      fte: true,
+      availability: true,
+      chargeabilityTarget: true,
+      federalState: true,
+      countryId: true,
+      metroCityId: true,
+      country: { select: { code: true, name: true } },
+      metroCity: { select: { name: true } },
+      orgUnit: { select: { name: true } },
+      managementLevelGroup: { select: { name: true, targetPercentage: true } },
+      managementLevel: { select: { name: true } },
+    },
+    orderBy: { displayName: "asc" },
+  });
+
+  const resourceIds = resources.map((resource: any) => resource.id);
+  const [bookings, contexts] = await Promise.all([
+    resourceIds.length > 0
+      ? listAssignmentBookings(db, {
+        startDate: periodStart,
+        endDate: periodEnd,
+        resourceIds,
+      })
+      : Promise.resolve([]),
+    loadResourceDailyAvailabilityContexts(
+      db,
+      resources.map((resource: any) => ({
+        id: resource.id,
+        availability: resource.availability as WeekdayAvailability,
+        countryId: resource.countryId,
+        countryCode: resource.country?.code,
+        federalState: resource.federalState,
+        metroCityId: resource.metroCityId,
+        metroCityName: resource.metroCity?.name,
+      })),
+      periodStart,
+      periodEnd,
+    ),
+  ]);
+
+  const rows = resources.map((resource: any) => {
+    const availability = resource.availability as WeekdayAvailability;
+    const context = contexts.get(resource.id);
+    const resourceBookings = bookings.filter((booking) => booking.resourceId === resource.id);
+    const baseWorkingDays = countEffectiveWorkingDays({
+      availability,
+      periodStart,
+      periodEnd,
+      context: undefined,
+    });
+    const effectiveWorkingDays = countEffectiveWorkingDays({
+      availability,
+      periodStart,
+      periodEnd,
+      context,
+    });
+    const baseAvailableHours = calculateEffectiveAvailableHours({
+      availability,
+      periodStart,
+      periodEnd,
+      context: undefined,
+    });
+    const sahHours = calculateEffectiveAvailableHours({
+      availability,
+      periodStart,
+      periodEnd,
+      context,
+    });
+
+    const holidayDates = [...(context?.holidayDates ?? new Set<string>())];
+    const publicHolidayWorkdayCount = holidayDates.reduce((count, isoDate) => (
+      count + (getAvailabilityHoursForDate(availability, new Date(`${isoDate}T00:00:00.000Z`)) > 0 ? 1 : 0)
+    ), 0);
+    const publicHolidayHoursDeduction = holidayDates.reduce((sum, isoDate) => (
+      sum + getAvailabilityHoursForDate(availability, new Date(`${isoDate}T00:00:00.000Z`))
+    ), 0);
+
+    let absenceDayEquivalent = 0;
+    let absenceHoursDeduction = 0;
+    for (const [isoDate, fraction] of context?.vacationFractionsByDate ?? []) {
+      const dayHours = getAvailabilityHoursForDate(availability, new Date(`${isoDate}T00:00:00.000Z`));
+      if (dayHours <= 0 || context?.holidayDates.has(isoDate)) {
+        continue;
+      }
+      absenceDayEquivalent += fraction;
+      absenceHoursDeduction += dayHours * fraction;
+    }
+
+    const actualBookedHours = resourceBookings
+      .filter((booking) => isChargeabilityActualBooking(booking, false))
+      .reduce((sum, booking) => sum + calculateEffectiveBookedHours({
+        availability,
+        startDate: booking.startDate,
+        endDate: booking.endDate,
+        hoursPerDay: booking.hoursPerDay,
+        periodStart,
+        periodEnd,
+        context,
+      }), 0);
+    const expectedBookedHours = resourceBookings
+      .filter((booking) => isChargeabilityRelevantProject(booking.project, true))
+      .reduce((sum, booking) => sum + calculateEffectiveBookedHours({
+        availability,
+        startDate: booking.startDate,
+        endDate: booking.endDate,
+        hoursPerDay: booking.hoursPerDay,
+        periodStart,
+        periodEnd,
+        context,
+      }), 0);
+
+    const targetPct = resource.managementLevelGroup?.targetPercentage != null
+      ? resource.managementLevelGroup.targetPercentage * 100
+      : resource.chargeabilityTarget;
+
+    return {
+      id: `${resource.id}:${periodMonth}`,
+      resourceId: resource.id,
+      monthKey: periodMonth,
+      periodStart: periodStart.toISOString(),
+      periodEnd: periodEnd.toISOString(),
+      eid: resource.eid,
+      displayName: resource.displayName,
+      email: resource.email,
+      chapter: resource.chapter,
+      resourceType: resource.resourceType,
+      isActive: resource.isActive,
+      chgResponsibility: resource.chgResponsibility,
+      rolledOff: resource.rolledOff,
+      departed: resource.departed,
+      countryCode: resource.country?.code ?? null,
+      countryName: resource.country?.name ?? null,
+      federalState: resource.federalState,
+      metroCityName: resource.metroCity?.name ?? null,
+      orgUnitName: resource.orgUnit?.name ?? null,
+      managementLevelGroupName: resource.managementLevelGroup?.name ?? null,
+      managementLevelName: resource.managementLevel?.name ?? null,
+      fte: roundMetric(resource.fte),
+      lcrCents: resource.lcrCents,
+      ucrCents: resource.ucrCents,
+      currency: resource.currency,
+      monthlyChargeabilityTargetPct: roundMetric(targetPct),
+      monthlyTargetHours: roundMetric((sahHours * targetPct) / 100),
+      monthlyBaseWorkingDays: roundMetric(baseWorkingDays),
+      monthlyEffectiveWorkingDays: roundMetric(effectiveWorkingDays),
+      monthlyBaseAvailableHours: roundMetric(baseAvailableHours),
+      monthlySahHours: roundMetric(sahHours),
+      monthlyPublicHolidayCount: holidayDates.length,
+      monthlyPublicHolidayWorkdayCount: publicHolidayWorkdayCount,
+      monthlyPublicHolidayHoursDeduction: roundMetric(publicHolidayHoursDeduction),
+      monthlyAbsenceDayEquivalent: roundMetric(absenceDayEquivalent),
+      monthlyAbsenceHoursDeduction: roundMetric(absenceHoursDeduction),
+      monthlyActualBookedHours: roundMetric(actualBookedHours),
+      monthlyExpectedBookedHours: roundMetric(expectedBookedHours),
+      monthlyActualChargeabilityPct: roundMetric(sahHours > 0 ? (actualBookedHours / sahHours) * 100 : 0),
+      monthlyExpectedChargeabilityPct: roundMetric(sahHours > 0 ? (expectedBookedHours / sahHours) * 100 : 0),
+      monthlyUnassignedHours: roundMetric(Math.max(0, sahHours - actualBookedHours)),
+    };
+  });
+
+  const filteredRows = rows.filter((row: Record<string, unknown>) => input.filters.every((filter) => matchesInMemoryFilter(
+    row,
+    filter,
+    RESOURCE_MONTH_COLUMNS,
+  )));
+  const sortedRows = sortInMemoryRows(filteredRows, input.sortBy, input.sortDir, RESOURCE_MONTH_COLUMNS);
+  const totalCount = sortedRows.length;
+  const pagedRows = sortedRows.slice(input.offset, input.offset + input.limit);
+  const outputColumns = ["id", ...input.columns.filter((column) => column !== "id")];
+
+  return {
+    rows: pagedRows.map((row) => pickColumns(row, outputColumns)),
+    columns: outputColumns,
+    totalCount,
+  };
+}
+
+function parseFilterValue(def: ColumnDef | undefined, value: string): unknown {
+  if (!def) return value;
+  if (def.dataType === "number") {
+    const parsed = Number(value);
+    return Number.isNaN(parsed) ? null : parsed;
+  }
+  if (def.dataType === "boolean") {
+    return value === "true";
+  }
+  if (def.dataType === "date") {
+    const parsed = new Date(value);
+    return Number.isNaN(parsed.getTime()) ? null : parsed.getTime();
+  }
+  return value;
+}
+
+function matchesInMemoryFilter(
+  row: Record<string, unknown>,
+  filter: FilterInput,
+  columns: ColumnDef[],
+): boolean {
+  const def = columns.find((column) => column.key === filter.field);
+  if (!def) {
+    return true;
+  }
+
+  const rowValueRaw = row[filter.field];
+  const rowValue = def.dataType === "date" && typeof rowValueRaw === "string"
+    ? new Date(rowValueRaw).getTime()
+    : rowValueRaw;
+  const parsedFilterValue = parseFilterValue(def, filter.value);
+
+  if (parsedFilterValue === null) {
+    return false;
+  }
+
+  switch (filter.op) {
+    case "eq":
+      return rowValue === parsedFilterValue;
+    case "neq":
+      return rowValue !== parsedFilterValue;
+    case "gt":
+      return typeof rowValue === "number" && typeof parsedFilterValue === "number" && rowValue > parsedFilterValue;
+    case "lt":
+      return typeof rowValue === "number" && typeof parsedFilterValue === "number" && rowValue < parsedFilterValue;
+    case "gte":
+      return typeof rowValue === "number" && typeof parsedFilterValue === "number" && rowValue >= parsedFilterValue;
+    case "lte":
+      return typeof rowValue === "number" && typeof parsedFilterValue === "number" && rowValue <= parsedFilterValue;
+    case "contains":
+      return typeof rowValue === "string" && rowValue.toLowerCase().includes(filter.value.toLowerCase());
+    case "in":
+      return filter.value.split(",").map((value) => value.trim()).includes(String(rowValue ?? ""));
+    default:
+      return true;
+  }
+}
+
+function sortInMemoryRows(
+  rows: Record<string, unknown>[],
+  sortBy: string | undefined,
+  sortDir: "asc" | "desc",
+  columns: ColumnDef[],
+): Record<string, unknown>[] {
+  if (!sortBy) {
+    return rows;
+  }
+
+  const def = columns.find((column) => column.key === sortBy);
+  if (!def) {
+    return rows;
+  }
+
+  const direction = sortDir === "asc" ? 1 : -1;
+  return [...rows].sort((left, right) => {
+    const leftValue = left[sortBy];
+    const rightValue = right[sortBy];
+
+    if (leftValue == null && rightValue == null) return 0;
+    if (leftValue == null) return 1;
+    if (rightValue == null) return -1;
+
+    if (def.dataType === "number") {
+      return direction * (Number(leftValue) - Number(rightValue));
+    }
+    if (def.dataType === "boolean") {
+      return direction * (Number(Boolean(leftValue)) - Number(Boolean(rightValue)));
+    }
+    if (def.dataType === "date") {
+      return direction * (new Date(String(leftValue)).getTime() - new Date(String(rightValue)).getTime());
+    }
+    return direction * String(leftValue).localeCompare(String(rightValue), "de");
+  });
+}
+
+function pickColumns(row: Record<string, unknown>, columns: string[]): Record<string, unknown> {
+  return Object.fromEntries(columns.map((column) => [column, row[column]]));
+}
+
+function roundMetric(value: number): number {
+  return Math.round(value * 10) / 10;
+}
+
+function toTemplateEntity(entity: EntityKey): ReportTemplateEntity {
+  switch (entity) {
+    case "resource":
+      return ReportTemplateEntity.RESOURCE;
+    case "project":
+      return ReportTemplateEntity.PROJECT;
+    case "assignment":
+      return ReportTemplateEntity.ASSIGNMENT;
+    case "resource_month":
+      return ReportTemplateEntity.RESOURCE_MONTH;
+    default:
+      throw new TRPCError({ code: "BAD_REQUEST", message: `Unknown entity: ${entity}` });
+  }
+}
+
+function fromTemplateEntity(entity: ReportTemplateEntity): EntityKey {
+  switch (entity) {
+    case ReportTemplateEntity.RESOURCE:
+      return "resource";
+    case ReportTemplateEntity.PROJECT:
+      return "project";
+    case ReportTemplateEntity.ASSIGNMENT:
+      return "assignment";
+    case ReportTemplateEntity.RESOURCE_MONTH:
+      return "resource_month";
+    default:
+      throw new TRPCError({ code: "BAD_REQUEST", message: `Unknown entity: ${entity}` });
+  }
+}
+
 /** Resolve the Prisma model delegate from entity key. */
 function getModelDelegate(db: any, entity: EntityKey) {
   switch (entity) {
diff --git a/packages/api/src/router/resource.ts b/packages/api/src/router/resource.ts
index 0d75664..b9e41d9 100644
--- a/packages/api/src/router/resource.ts
+++ b/packages/api/src/router/resource.ts
@@ -7,7 +7,6 @@ import {
 } from "@capakraken/application";
 import { BlueprintTarget, CreateResourceSchema, FieldType, PermissionKey, ResourceRoleSchema, ResourceType, SkillEntrySchema, UpdateResourceSchema, inferStateFromPostalCode } from "@capakraken/shared";
 import type { WeekdayAvailability } from "@capakraken/shared";
-import { computeChargeability } from "@capakraken/engine";
 import { assertBlueprintDynamicFields } from "./blueprint-validation.js";
 import { buildDynamicFieldWhereClauses } from "./custom-field-filters.js";
 import {
@@ -17,6 +16,12 @@ import {
   getAnonymizationDirectory,
   resolveResourceIdsByDisplayedEids,
 } from "../lib/anonymization.js";
+import {
+  calculateEffectiveAvailableHours,
+  calculateEffectiveBookedHours,
+  calculateEffectiveDayAvailability,
+  loadResourceDailyAvailabilityContexts,
+} from "../lib/resource-capacity.js";
 
 export const DEFAULT_SUMMARY_PROMPT = `You are writing a short professional profile for an internal resource planning tool.
 
@@ -46,6 +51,50 @@ function parseResourceCursor(cursor: string | undefined): { displayName: string;
   return null;
 }
 
+type BookingForCapacity = {
+  startDate: Date;
+  endDate: Date;
+  hoursPerDay: number;
+};
+
+function toIsoDate(value: Date): string {
+  return value.toISOString().slice(0, 10);
+}
+
+function buildDailyBookedHoursMap(
+  bookings: BookingForCapacity[],
+  availability: WeekdayAvailability,
+  context: Parameters<typeof calculateEffectiveBookedHours>[0]["context"],
+  periodStart: Date,
+  periodEnd: Date,
+): Map<string, number> {
+  const dailyBookedHours = new Map<string, number>();
+  const cursor = new Date(periodStart);
+  cursor.setUTCHours(0, 0, 0, 0);
+  const end = new Date(periodEnd);
+  end.setUTCHours(0, 0, 0, 0);
+
+  while (cursor <= end) {
+    const isoDate = toIsoDate(cursor);
+    const bookedHours = bookings.reduce(
+      (sum, booking) => sum + calculateEffectiveBookedHours({
+        availability,
+        startDate: booking.startDate,
+        endDate: booking.endDate,
+        hoursPerDay: booking.hoursPerDay,
+        periodStart: cursor,
+        periodEnd: cursor,
+        context,
+      }),
+      0,
+    );
+    dailyBookedHours.set(isoDate, bookedHours);
+    cursor.setUTCDate(cursor.getUTCDate() + 1);
+  }
+
+  return dailyBookedHours;
+}
+
 export const resourceRouter = createTRPCRouter({
   list: protectedProcedure
     .input(
@@ -1056,10 +1105,14 @@ export const resourceRouter = createTRPCRouter({
           portfolioUrl: true,
           postalCode: true,
           federalState: true,
+          countryId: true,
+          metroCityId: true,
           valueScore: true,
           valueScoreBreakdown: true,
           valueScoreUpdatedAt: true,
           userId: true,
+          country: { select: { code: true } },
+          metroCity: { select: { name: true } },
         },
       });
       const bookings = await listAssignmentBookings(ctx.db, {
@@ -1067,30 +1120,67 @@ export const resourceRouter = createTRPCRouter({
         endDate: end,
         resourceIds: resources.map((resource) => resource.id),
       });
+      const bookingsByResourceId = new Map<string, typeof bookings>();
+      for (const booking of bookings) {
+        if (!booking.resourceId) {
+          continue;
+        }
+        const items = bookingsByResourceId.get(booking.resourceId) ?? [];
+        items.push(booking);
+        bookingsByResourceId.set(booking.resourceId, items);
+      }
+      const contexts = await loadResourceDailyAvailabilityContexts(
+        ctx.db,
+        resources.map((resource) => ({
+          id: resource.id,
+          availability: resource.availability as unknown as WeekdayAvailability,
+          countryId: resource.countryId,
+          countryCode: resource.country?.code,
+          federalState: resource.federalState,
+          metroCityId: resource.metroCityId,
+          metroCityName: resource.metroCity?.name,
+        })),
+        start,
+        end,
+      );
       const directory = await getAnonymizationDirectory(ctx.db);
 
       return resources.map((r) => {
-        const avail = r.availability as Record<string, number>;
-        const dailyAvailHours = Object.values(avail).reduce((s, h) => s + (h ?? 0), 0) / 5;
-        const periodDays =
-          (end.getTime() - start.getTime()) / (1000 * 60 * 60 * 24) + 1;
-        const availableHours = dailyAvailHours * periodDays * (5 / 7);
-
-        let bookedHours = 0;
-        let isOverbooked = false;
-        const resourceBookings = bookings.filter(
+        const availability = r.availability as unknown as WeekdayAvailability;
+        const context = contexts.get(r.id);
+        const resourceBookings = (bookingsByResourceId.get(r.id) ?? []).filter(
           (booking) =>
             booking.resourceId === r.id &&
             (input.includeProposed || booking.status !== "PROPOSED"),
         );
-        for (const a of resourceBookings) {
-          const days =
-            (new Date(a.endDate).getTime() - new Date(a.startDate).getTime()) /
-              (1000 * 60 * 60 * 24) +
-            1;
-          bookedHours += a.hoursPerDay * days;
-          if (a.hoursPerDay > dailyAvailHours) isOverbooked = true;
-        }
+        const availableHours = calculateEffectiveAvailableHours({
+          availability,
+          periodStart: start,
+          periodEnd: end,
+          context,
+        });
+        const bookedHours = resourceBookings.reduce(
+          (sum, booking) => sum + calculateEffectiveBookedHours({
+            availability,
+            startDate: booking.startDate,
+            endDate: booking.endDate,
+            hoursPerDay: booking.hoursPerDay,
+            periodStart: start,
+            periodEnd: end,
+            context,
+          }),
+          0,
+        );
+        const dailyBookedHours = buildDailyBookedHoursMap(resourceBookings, availability, context, start, end);
+        const isOverbooked = Array.from(dailyBookedHours.entries()).some(([isoDate, hours]) => {
+          const date = new Date(`${isoDate}T00:00:00.000Z`);
+          const dayCapacity = calculateEffectiveDayAvailability({
+            availability,
+            date,
+            context,
+          });
+          return dayCapacity > 0 && hours > dayCapacity;
+        });
 
         const utilizationPercent =
           availableHours > 0 ? Math.round((bookedHours / availableHours) * 100) : 0;
@@ -1125,6 +1215,11 @@ export const resourceRouter = createTRPCRouter({
           chapter: true,
           chargeabilityTarget: true,
           availability: true,
+          countryId: true,
+          federalState: true,
+          metroCityId: true,
+          country: { select: { code: true } },
+          metroCity: { select: { name: true } },
         },
       });
       const bookings = await listAssignmentBookings(ctx.db, {
@@ -1132,10 +1227,25 @@ export const resourceRouter = createTRPCRouter({
         endDate: end,
         resourceIds: resources.map((resource) => resource.id),
       });
+      const contexts = await loadResourceDailyAvailabilityContexts(
+        ctx.db,
+        resources.map((resource) => ({
+          id: resource.id,
+          availability: resource.availability as unknown as WeekdayAvailability,
+          countryId: resource.countryId,
+          countryCode: resource.country?.code,
+          federalState: resource.federalState,
+          metroCityId: resource.metroCityId,
+          metroCityName: resource.metroCity?.name,
+        })),
+        start,
+        end,
+      );
       const directory = await getAnonymizationDirectory(ctx.db);
 
       return resources.map((r) => {
         const avail = r.availability as unknown as WeekdayAvailability;
+        const context = contexts.get(r.id);
         const resourceBookings = bookings.filter((booking) => booking.resourceId === r.id);
 
         const actualAllocs = resourceBookings.filter((booking) =>
@@ -1146,8 +1256,42 @@ export const resourceRouter = createTRPCRouter({
           isChargeabilityRelevantProject(booking.project, true),
         );
 
-        const actual   = computeChargeability(avail, actualAllocs,   start, end);
-        const expected = computeChargeability(avail, expectedAllocs, start, end);
+        const availableHours = calculateEffectiveAvailableHours({
+          availability: avail,
+          periodStart: start,
+          periodEnd: end,
+          context,
+        });
+        const actualBookedHours = actualAllocs.reduce(
+          (sum, booking) => sum + calculateEffectiveBookedHours({
+            availability: avail,
+            startDate: booking.startDate,
+            endDate: booking.endDate,
+            hoursPerDay: booking.hoursPerDay,
+            periodStart: start,
+            periodEnd: end,
+            context,
+          }),
+          0,
+        );
+        const expectedBookedHours = expectedAllocs.reduce(
+          (sum, booking) => sum + calculateEffectiveBookedHours({
+            availability: avail,
+            startDate: booking.startDate,
+            endDate: booking.endDate,
+            hoursPerDay: booking.hoursPerDay,
+            periodStart: start,
+            periodEnd: end,
+            context,
+          }),
+          0,
+        );
+        const actualChargeability = availableHours > 0
+          ? Math.round((actualBookedHours / availableHours) * 100)
+          : 0;
+        const expectedChargeability = availableHours > 0
+          ? Math.round((expectedBookedHours / availableHours) * 100)
+          : 0;
 
         return anonymizeResource({
           id:                      r.id,
@@ -1155,9 +1299,9 @@ export const resourceRouter = createTRPCRouter({
           displayName:             r.displayName,
           chapter:                 r.chapter,
           chargeabilityTarget:     r.chargeabilityTarget,
-          actualChargeability:     actual.chargeability,
-          expectedChargeability:   expected.chargeability,
-          availableHours:          actual.availableHours,
+          actualChargeability,
+          expectedChargeability,
+          availableHours:          Math.round(availableHours),
         }, directory);
       });
     }),
@@ -1208,7 +1352,10 @@ export const resourceRouter = createTRPCRouter({
     )
     .query(async ({ ctx, input }) => {
       const now = new Date();
-      const thirtyDaysFromNow = new Date(now.getTime() + 30 * 24 * 60 * 60 * 1000);
+      const today = new Date(now);
+      today.setUTCHours(0, 0, 0, 0);
+      const thirtyDaysFromNow = new Date(today);
+      thirtyDaysFromNow.setUTCDate(thirtyDaysFromNow.getUTCDate() + 29);
 
       type SkillRow = { skill: string; category?: string; proficiency: number; isMainSkill?: boolean };
 
@@ -1223,6 +1370,11 @@ export const resourceRouter = createTRPCRouter({
           skills: true,
           availability: true,
           chargeabilityTarget: true,
+          countryId: true,
+          federalState: true,
+          metroCityId: true,
+          country: { select: { code: true } },
+          metroCity: { select: { name: true } },
         },
       });
 
@@ -1232,7 +1384,7 @@ export const resourceRouter = createTRPCRouter({
         where: {
           resourceId: { in: allResourceIds },
           status: { in: ["PROPOSED", "CONFIRMED", "ACTIVE", "COMPLETED"] },
-          endDate: { gte: now },
+          endDate: { gte: today },
           startDate: { lte: thirtyDaysFromNow },
         },
         select: {
@@ -1242,41 +1394,78 @@ export const resourceRouter = createTRPCRouter({
           hoursPerDay: true,
         },
       });
+      const contexts = await loadResourceDailyAvailabilityContexts(
+        ctx.db,
+        resources.map((resource) => ({
+          id: resource.id,
+          availability: resource.availability as unknown as WeekdayAvailability,
+          countryId: resource.countryId,
+          countryCode: resource.country?.code,
+          federalState: resource.federalState,
+          metroCityId: resource.metroCityId,
+          metroCityName: resource.metroCity?.name,
+        })),
+        today,
+        thirtyDaysFromNow,
+      );
+      const assignmentsByResourceId = new Map<string, typeof assignments>();
+      for (const assignment of assignments) {
+        const items = assignmentsByResourceId.get(assignment.resourceId) ?? [];
+        items.push(assignment);
+        assignmentsByResourceId.set(assignment.resourceId, items);
+      }
 
-      // Build utilization map (simple: booked hours per day / available hours per day)
+      // Build utilization map with holiday-aware daily capacity over the next 30 days.
       const utilizationMap = new Map<string, { utilizationPercent: number; earliestAvailableDate: Date | null }>();
       for (const r of resources) {
-        const avail = r.availability as Record<string, number>;
-        const dailyAvailHours = Object.values(avail).reduce((s, h) => s + (h ?? 0), 0) / 5;
-        const resourceAssignments = assignments.filter((a) => a.resourceId === r.id);
+        const availability = r.availability as unknown as WeekdayAvailability;
+        const context = contexts.get(r.id);
+        const resourceAssignments = assignmentsByResourceId.get(r.id) ?? [];
+        const todayAvailableHours = calculateEffectiveAvailableHours({
+          availability,
+          periodStart: today,
+          periodEnd: today,
+          context,
+        });
+        const todayBookedHours = resourceAssignments.reduce(
+          (sum, assignment) => sum + calculateEffectiveBookedHours({
+            availability,
+            startDate: assignment.startDate,
+            endDate: assignment.endDate,
+            hoursPerDay: assignment.hoursPerDay,
+            periodStart: today,
+            periodEnd: today,
+            context,
+          }),
+          0,
+        );
+        const utilizationPercent = todayAvailableHours > 0
+          ? Math.round((todayBookedHours / todayAvailableHours) * 100)
+          : 0;
+        const dailyBookedHours = buildDailyBookedHoursMap(
+          resourceAssignments,
+          availability,
+          context,
+          today,
+          thirtyDaysFromNow,
+        );
 
-        // Current daily booked hours (assignments overlapping today)
-        let todayBooked = 0;
-        for (const a of resourceAssignments) {
-          if (a.startDate <= now && a.endDate >= now) {
-            todayBooked += a.hoursPerDay;
-          }
-        }
-        const utilizationPercent = dailyAvailHours > 0 ? Math.round((todayBooked / dailyAvailHours) * 100) : 0;
-
-        // Find earliest date when resource has capacity (within 30 days)
         let earliestAvailableDate: Date | null = null;
-        const checkDate = new Date(now);
+        const checkDate = new Date(today);
         for (let i = 0; i < 30; i++) {
-          const day = checkDate.getDay();
-          if (day !== 0 && day !== 6) {
-            let dayBooked = 0;
-            for (const a of resourceAssignments) {
-              if (a.startDate <= checkDate && a.endDate >= checkDate) {
-                dayBooked += a.hoursPerDay;
-              }
-            }
-            if (dayBooked < dailyAvailHours * 0.8) {
+          const dayAvailableHours = calculateEffectiveDayAvailability({
+            availability,
+            date: checkDate,
+            context,
+          });
+          if (dayAvailableHours > 0) {
+            const dayBookedHours = dailyBookedHours.get(toIsoDate(checkDate)) ?? 0;
+            if (dayBookedHours < dayAvailableHours * 0.8) {
               earliestAvailableDate = new Date(checkDate);
               break;
             }
           }
-          checkDate.setDate(checkDate.getDate() + 1);
+          checkDate.setUTCDate(checkDate.getUTCDate() + 1);
         }
 
         utilizationMap.set(r.id, { utilizationPercent, earliestAvailableDate });
diff --git a/packages/api/src/router/scenario.ts b/packages/api/src/router/scenario.ts
index a13325a..00ba4c8 100644
--- a/packages/api/src/router/scenario.ts
+++ b/packages/api/src/router/scenario.ts
@@ -1,8 +1,14 @@
-import { calculateAllocation, countWorkingDays } from "@capakraken/engine/allocation";
+import { calculateAllocation } from "@capakraken/engine/allocation";
+import type { WeekdayAvailability } from "@capakraken/shared";
 import { z } from "zod";
 import { TRPCError } from "@trpc/server";
 import { createTRPCRouter, controllerProcedure, protectedProcedure } from "../trpc.js";
 import { createAuditEntry } from "../lib/audit.js";
+import {
+  calculateEffectiveAvailableHours,
+  calculateEffectiveBookedHours,
+  loadResourceDailyAvailabilityContexts,
+} from "../lib/resource-capacity.js";
 
 const DEFAULT_AVAILABILITY = {
   monday: 8,
@@ -69,6 +75,11 @@ export const scenarioRouter = createTRPCRouter({
               availability: true,
               chargeabilityTarget: true,
               skills: true,
+              countryId: true,
+              federalState: true,
+              metroCityId: true,
+              country: { select: { code: true } },
+              metroCity: { select: { name: true } },
             },
           },
           roleEntity: { select: { id: true, name: true, color: true } },
@@ -85,23 +96,53 @@ export const scenarioRouter = createTRPCRouter({
         },
       });
 
-      // Calculate baseline totals
-      let totalCostCents = 0;
-      let totalHours = 0;
+      const assignmentRangeStart = assignments.length > 0
+        ? new Date(Math.min(...assignments.map((assignment) => assignment.startDate.getTime())))
+        : project.startDate;
+      const assignmentRangeEnd = assignments.length > 0
+        ? new Date(Math.max(...assignments.map((assignment) => assignment.endDate.getTime())))
+        : project.endDate;
+      const contexts = await loadResourceDailyAvailabilityContexts(
+        ctx.db,
+        assignments
+          .flatMap((assignment) => (assignment.resource ? [assignment.resource] : []))
+          .map((resource) => ({
+            id: resource.id,
+            availability: resource.availability as unknown as WeekdayAvailability,
+            countryId: resource.countryId,
+            countryCode: resource.country?.code,
+            federalState: resource.federalState,
+            metroCityId: resource.metroCityId,
+            metroCityName: resource.metroCity?.name,
+          })),
+        assignmentRangeStart,
+        assignmentRangeEnd,
+      );
 
       const baselineAllocations = assignments.map((a) => {
         const availability = (a.resource?.availability as typeof DEFAULT_AVAILABILITY) ?? DEFAULT_AVAILABILITY;
         const lcrCents = a.resource?.lcrCents ?? 0;
-        const result = calculateAllocation({
-          lcrCents,
-          hoursPerDay: a.hoursPerDay,
-          startDate: a.startDate,
-          endDate: a.endDate,
-          availability,
-        });
-
-        totalCostCents += result.totalCostCents;
-        totalHours += result.totalHours;
+        const totalHours = a.resourceId
+          ? calculateEffectiveBookedHours({
+            availability,
+            startDate: a.startDate,
+            endDate: a.endDate,
+            hoursPerDay: a.hoursPerDay,
+            periodStart: assignmentRangeStart,
+            periodEnd: assignmentRangeEnd,
+            context: contexts.get(a.resourceId),
+          })
+          : calculateAllocation({
+            lcrCents,
+            hoursPerDay: a.hoursPerDay,
+            startDate: a.startDate,
+            endDate: a.endDate,
+            availability,
+          }).totalHours;
+        const costCents = Math.round(totalHours * lcrCents);
+        const workingDays = a.hoursPerDay > 0
+          ? Math.round((totalHours / a.hoursPerDay) * 100) / 100
+          : 0;
 
         return {
           id: a.id,
@@ -116,11 +157,13 @@ export const scenarioRouter = createTRPCRouter({
           endDate: a.endDate.toISOString(),
           hoursPerDay: a.hoursPerDay,
           status: a.status,
-          costCents: result.totalCostCents,
-          totalHours: result.totalHours,
-          workingDays: result.workingDays,
+          costCents,
+          totalHours,
+          workingDays,
         };
       });
+      const totalCostCents = baselineAllocations.reduce((sum, allocation) => sum + allocation.costCents, 0);
+      const totalHours = baselineAllocations.reduce((sum, allocation) => sum + allocation.totalHours, 0);
 
       const baselineDemands = demands.map((d) => ({
         id: d.id,
@@ -175,27 +218,16 @@ export const scenarioRouter = createTRPCRouter({
               availability: true,
               chargeabilityTarget: true,
               skills: true,
+              countryId: true,
+              federalState: true,
+              metroCityId: true,
+              country: { select: { code: true } },
+              metroCity: { select: { name: true } },
             },
           },
         },
       });
 
-      // Compute baseline totals
-      let baselineCostCents = 0;
-      let baselineHours = 0;
-      for (const a of currentAssignments) {
-        const availability = (a.resource?.availability as typeof DEFAULT_AVAILABILITY) ?? DEFAULT_AVAILABILITY;
-        const result = calculateAllocation({
-          lcrCents: a.resource?.lcrCents ?? 0,
-          hoursPerDay: a.hoursPerDay,
-          startDate: a.startDate,
-          endDate: a.endDate,
-          availability,
-        });
-        baselineCostCents += result.totalCostCents;
-        baselineHours += result.totalHours;
-      }
-
       // Collect all resource IDs we need to look up (from changes)
       const resourceIds = new Set<string>();
       for (const c of changes) {
@@ -217,6 +249,11 @@ export const scenarioRouter = createTRPCRouter({
           availability: true,
           chargeabilityTarget: true,
           skills: true,
+          countryId: true,
+          federalState: true,
+          metroCityId: true,
+          country: { select: { code: true } },
+          metroCity: { select: { name: true } },
         },
       });
       const resourceMap = new Map(resources.map((r) => [r.id, r]));
@@ -287,22 +324,6 @@ export const scenarioRouter = createTRPCRouter({
         });
       }
 
-      // Compute scenario totals
-      let scenarioCostCents = 0;
-      let scenarioHours = 0;
-
-      for (const entry of scenarioEntries) {
-        const result = calculateAllocation({
-          lcrCents: entry.lcrCents,
-          hoursPerDay: entry.hoursPerDay,
-          startDate: entry.startDate,
-          endDate: entry.endDate,
-          availability: entry.availability,
-        });
-        scenarioCostCents += result.totalCostCents;
-        scenarioHours += result.totalHours;
-      }
-
       // Compute per-resource utilization impact
       // Load ALL assignments for affected resources (across all projects) to measure total utilization
       const affectedResourceIds = [...new Set(scenarioEntries.map((e) => e.resourceId).filter(Boolean))] as string[];
@@ -341,13 +362,97 @@ export const scenarioRouter = createTRPCRouter({
         if (e.endDate > windowEnd) windowEnd = e.endDate;
       }
 
+      const contexts = await loadResourceDailyAvailabilityContexts(
+        ctx.db,
+        resources.map((resource) => ({
+          id: resource.id,
+          availability: resource.availability as unknown as WeekdayAvailability,
+          countryId: resource.countryId,
+          countryCode: resource.country?.code,
+          federalState: resource.federalState,
+          metroCityId: resource.metroCityId,
+          metroCityName: resource.metroCity?.name,
+        })),
+        windowStart,
+        windowEnd,
+      );
+
+      function calculateEntryHours(entry: {
+        resourceId: string | null;
+        lcrCents: number;
+        hoursPerDay: number;
+        startDate: Date;
+        endDate: Date;
+        availability: typeof DEFAULT_AVAILABILITY;
+      }) {
+        if (!entry.resourceId) {
+          return calculateAllocation({
+            lcrCents: entry.lcrCents,
+            hoursPerDay: entry.hoursPerDay,
+            startDate: entry.startDate,
+            endDate: entry.endDate,
+            availability: entry.availability,
+          }).totalHours;
+        }
+
+        return calculateEffectiveBookedHours({
+          availability: entry.availability,
+          startDate: entry.startDate,
+          endDate: entry.endDate,
+          hoursPerDay: entry.hoursPerDay,
+          periodStart: windowStart,
+          periodEnd: windowEnd,
+          context: contexts.get(entry.resourceId),
+        });
+      }
+
+      // Compute scenario totals
+      let scenarioCostCents = 0;
+      let scenarioHours = 0;
+
+      for (const entry of scenarioEntries) {
+        const totalHours = calculateEntryHours(entry);
+        scenarioCostCents += Math.round(totalHours * entry.lcrCents);
+        scenarioHours += totalHours;
+      }
+
+      let baselineCostCents = 0;
+      let baselineHours = 0;
+      for (const assignment of currentAssignments) {
+        const availability = (assignment.resource?.availability as typeof DEFAULT_AVAILABILITY) ?? DEFAULT_AVAILABILITY;
+        const totalHours = assignment.resourceId
+          ? calculateEffectiveBookedHours({
+            availability,
+            startDate: assignment.startDate,
+            endDate: assignment.endDate,
+            hoursPerDay: assignment.hoursPerDay,
+            periodStart: windowStart,
+            periodEnd: windowEnd,
+            context: contexts.get(assignment.resourceId),
+          })
+          : calculateAllocation({
+            lcrCents: assignment.resource?.lcrCents ?? 0,
+            hoursPerDay: assignment.hoursPerDay,
+            startDate: assignment.startDate,
+            endDate: assignment.endDate,
+            availability,
+          }).totalHours;
+        baselineHours += totalHours;
+        baselineCostCents += Math.round(totalHours * (assignment.resource?.lcrCents ?? 0));
+      }
+
       const resourceImpacts = affectedResourceIds.map((resId) => {
         const resource = resourceMap.get(resId);
         if (!resource) return null;
 
         const availability = (resource.availability as typeof DEFAULT_AVAILABILITY) ?? DEFAULT_AVAILABILITY;
-        const totalWorkDays = countWorkingDays(windowStart, windowEnd, availability);
-        const totalAvailableHours = totalWorkDays * (availability.monday ?? 8);
+        const context = contexts.get(resId);
+        const totalAvailableHours = calculateEffectiveAvailableHours({
+          availability,
+          periodStart: windowStart,
+          periodEnd: windowEnd,
+          context,
+        });
 
         // Current utilization on this project
         const currentProjectAssignments = (assignmentsByResource.get(resId) ?? []).filter(
@@ -355,28 +460,30 @@ export const scenarioRouter = createTRPCRouter({
         );
         let currentProjectHours = 0;
         for (const a of currentProjectAssignments) {
-          const r = calculateAllocation({
-            lcrCents: 0,
-            hoursPerDay: a.hoursPerDay,
+          currentProjectHours += calculateEffectiveBookedHours({
+            availability,
             startDate: a.startDate,
             endDate: a.endDate,
-            availability,
+            hoursPerDay: a.hoursPerDay,
+            periodStart: windowStart,
+            periodEnd: windowEnd,
+            context,
           });
-          currentProjectHours += r.totalHours;
         }
 
         // Scenario hours for this resource on this project
         const scenarioResourceEntries = scenarioEntries.filter((e) => e.resourceId === resId);
         let scenarioProjectHours = 0;
         for (const e of scenarioResourceEntries) {
-          const r = calculateAllocation({
-            lcrCents: 0,
-            hoursPerDay: e.hoursPerDay,
+          scenarioProjectHours += calculateEffectiveBookedHours({
+            availability,
             startDate: e.startDate,
             endDate: e.endDate,
-            availability,
+            hoursPerDay: e.hoursPerDay,
+            periodStart: windowStart,
+            periodEnd: windowEnd,
+            context,
           });
-          scenarioProjectHours += r.totalHours;
         }
 
         // Total hours across all projects (excluding this project's current, adding scenario)
@@ -385,14 +492,15 @@ export const scenarioRouter = createTRPCRouter({
         );
         let otherProjectsHours = 0;
         for (const a of otherProjectAssignments) {
-          const r = calculateAllocation({
-            lcrCents: 0,
-            hoursPerDay: a.hoursPerDay,
+          otherProjectsHours += calculateEffectiveBookedHours({
+            availability,
             startDate: a.startDate,
             endDate: a.endDate,
-            availability,
+            hoursPerDay: a.hoursPerDay,
+            periodStart: windowStart,
+            periodEnd: windowEnd,
+            context,
           });
-          otherProjectsHours += r.totalHours;
         }
 
         const currentTotalHours = otherProjectsHours + currentProjectHours;
diff --git a/packages/api/src/router/staffing.ts b/packages/api/src/router/staffing.ts
index a337748..69ce252 100644
--- a/packages/api/src/router/staffing.ts
+++ b/packages/api/src/router/staffing.ts
@@ -1,10 +1,106 @@
-import { analyzeUtilization, findCapacityWindows, rankResources } from "@capakraken/staffing";
+import { rankResources } from "@capakraken/staffing";
 import { listAssignmentBookings } from "@capakraken/application";
-import { TRPCError } from "@trpc/server";
+import type { WeekdayAvailability } from "@capakraken/shared";
 import { z } from "zod";
 import { findUniqueOrThrow } from "../db/helpers.js";
+import {
+  calculateEffectiveAvailableHours,
+  calculateEffectiveBookedHours,
+  countEffectiveWorkingDays,
+  loadResourceDailyAvailabilityContexts,
+  type ResourceDailyAvailabilityContext,
+} from "../lib/resource-capacity.js";
 import { createTRPCRouter, protectedProcedure } from "../trpc.js";
 
+const DAY_KEYS: (keyof WeekdayAvailability)[] = [
+  "sunday",
+  "monday",
+  "tuesday",
+  "wednesday",
+  "thursday",
+  "friday",
+  "saturday",
+];
+const ACTIVE_STATUSES = new Set(["PROPOSED", "CONFIRMED", "ACTIVE"]);
+
+function toIsoDate(value: Date): string {
+  return value.toISOString().slice(0, 10);
+}
+
+function round1(value: number): number {
+  return Math.round(value * 10) / 10;
+}
+
+function getBaseDayAvailability(
+  availability: WeekdayAvailability,
+  date: Date,
+): number {
+  const key = DAY_KEYS[date.getUTCDay()];
+  return key ? (availability[key] ?? 0) : 0;
+}
+
+function getEffectiveDayAvailability(
+  availability: WeekdayAvailability,
+  date: Date,
+  context: ResourceDailyAvailabilityContext | undefined,
+): number {
+  const key = DAY_KEYS[date.getUTCDay()];
+  const baseHours = key ? (availability[key] ?? 0) : 0;
+  if (baseHours <= 0) {
+    return 0;
+  }
+  const fraction = context?.absenceFractionsByDate.get(toIsoDate(date)) ?? 0;
+  return Math.max(0, baseHours * (1 - fraction));
+}
+
+function overlapsDateRange(startDate: Date, endDate: Date, date: Date): boolean {
+  return date >= startDate && date <= endDate;
+}
+
+function averagePerWorkingDay(totalHours: number, workingDays: number): number {
+  if (workingDays <= 0) {
+    return 0;
+  }
+  return round1(totalHours / workingDays);
+}
+
+function createLocationLabel(input: {
+  countryCode?: string | null;
+  federalState?: string | null;
+  metroCityName?: string | null;
+}): string {
+  return [
+    input.countryCode ?? null,
+    input.federalState ?? null,
+    input.metroCityName ?? null,
+  ].filter((value): value is string => Boolean(value && value.trim().length > 0)).join(" / ");
+}
+
+function calculateAllocatedHoursForDay(input: {
+  bookings: Array<{ startDate: Date; endDate: Date; hoursPerDay: number; status: string; isChargeable?: boolean }>;
+  date: Date;
+  context: ResourceDailyAvailabilityContext | undefined;
+}): { allocatedHours: number; chargeableHours: number } {
+  const isoDate = toIsoDate(input.date);
+  const dayFraction = Math.max(0, 1 - (input.context?.absenceFractionsByDate.get(isoDate) ?? 0));
+
+  return input.bookings.reduce(
+    (acc, booking) => {
+      if (!ACTIVE_STATUSES.has(booking.status) || !overlapsDateRange(booking.startDate, booking.endDate, input.date)) {
+        return acc;
+      }
+
+      const effectiveHours = booking.hoursPerDay * dayFraction;
+      acc.allocatedHours += effectiveHours;
+      if (booking.isChargeable) {
+        acc.chargeableHours += effectiveHours;
+      }
+      return acc;
+    },
+    { allocatedHours: 0, chargeableHours: 0 },
+  );
+}
+
 export const staffingRouter = createTRPCRouter({
   /**
    * Get ranked resource suggestions for a staffing requirement.
@@ -32,31 +128,169 @@ export const staffingRouter = createTRPCRouter({
           isActive: true,
           ...(chapter ? { chapter } : {}),
         },
+        select: {
+          id: true,
+          displayName: true,
+          eid: true,
+          skills: true,
+          lcrCents: true,
+          chargeabilityTarget: true,
+          availability: true,
+          valueScore: true,
+          countryId: true,
+          federalState: true,
+          metroCityId: true,
+          country: { select: { code: true, name: true } },
+          metroCity: { select: { name: true } },
+        },
       });
       const bookings = await listAssignmentBookings(ctx.db, {
         startDate,
         endDate,
         resourceIds: resources.map((resource) => resource.id),
       });
+      const contexts = await loadResourceDailyAvailabilityContexts(
+        ctx.db,
+        resources.map((resource) => ({
+          id: resource.id,
+          availability: resource.availability as unknown as WeekdayAvailability,
+          countryId: resource.countryId,
+          countryCode: resource.country?.code,
+          federalState: resource.federalState,
+          metroCityId: resource.metroCityId,
+          metroCityName: resource.metroCity?.name,
+        })),
+        startDate,
+        endDate,
+      );
+      const bookingsByResourceId = new Map<string, typeof bookings>();
+      for (const booking of bookings) {
+        if (!booking.resourceId) {
+          continue;
+        }
+        const items = bookingsByResourceId.get(booking.resourceId) ?? [];
+        items.push(booking);
+        bookingsByResourceId.set(booking.resourceId, items);
+      }
 
       // Compute utilization percent for each resource in the requested period
       const enrichedResources = resources.map((resource) => {
-        const totalAvailableHours =
-          (resource.availability as { monday?: number; tuesday?: number; wednesday?: number; thursday?: number; friday?: number }).monday ?? 8;
-        const resourceBookings = bookings.filter((booking) => booking.resourceId === resource.id);
-
-        const allocatedHoursPerDay = resourceBookings.reduce(
-          (sum, a) => sum + a.hoursPerDay,
+        const availability = resource.availability as unknown as WeekdayAvailability;
+        const context = contexts.get(resource.id);
+        const resourceBookings = bookingsByResourceId.get(resource.id) ?? [];
+        const activeBookings = resourceBookings.filter((booking) => ACTIVE_STATUSES.has(booking.status));
+        const baseAvailableHours = calculateEffectiveAvailableHours({
+          availability,
+          periodStart: startDate,
+          periodEnd: endDate,
+          context: undefined,
+        });
+        const totalAvailableHours = calculateEffectiveAvailableHours({
+          availability,
+          periodStart: startDate,
+          periodEnd: endDate,
+          context,
+        });
+        const baseWorkingDays = countEffectiveWorkingDays({
+          availability,
+          periodStart: startDate,
+          periodEnd: endDate,
+          context: undefined,
+        });
+        const effectiveWorkingDays = countEffectiveWorkingDays({
+          availability,
+          periodStart: startDate,
+          periodEnd: endDate,
+          context,
+        });
+        const allocatedHours = activeBookings.reduce(
+          (sum, booking) =>
+            sum + calculateEffectiveBookedHours({
+              availability,
+              startDate: booking.startDate,
+              endDate: booking.endDate,
+              hoursPerDay: booking.hoursPerDay,
+              periodStart: startDate,
+              periodEnd: endDate,
+              context,
+            }),
           0,
         );
+        const holidayDates = [...(context?.holidayDates ?? new Set<string>())].sort();
+        const holidayWorkdayCount = holidayDates.reduce((count, isoDate) => (
+          count + (getBaseDayAvailability(availability, new Date(`${isoDate}T00:00:00.000Z`)) > 0 ? 1 : 0)
+        ), 0);
+        const holidayHoursDeduction = holidayDates.reduce((sum, isoDate) => (
+          sum + getBaseDayAvailability(availability, new Date(`${isoDate}T00:00:00.000Z`))
+        ), 0);
+        let absenceDayEquivalent = 0;
+        let absenceHoursDeduction = 0;
+        for (const [isoDate, fraction] of context?.vacationFractionsByDate ?? []) {
+          const dayHours = getBaseDayAvailability(availability, new Date(`${isoDate}T00:00:00.000Z`));
+          if (dayHours <= 0 || context?.holidayDates.has(isoDate)) {
+            continue;
+          }
+          absenceDayEquivalent += fraction;
+          absenceHoursDeduction += dayHours * fraction;
+        }
+        const conflictDays: string[] = [];
+        const conflictDetails: Array<{
+          date: string;
+          baseHours: number;
+          effectiveHours: number;
+          allocatedHours: number;
+          remainingHours: number;
+          requestedHours: number;
+          shortageHours: number;
+          absenceFraction: number;
+          isHoliday: boolean;
+        }> = [];
+        const cursor = new Date(startDate);
+        cursor.setUTCHours(0, 0, 0, 0);
+        const periodEndAtMidnight = new Date(endDate);
+        periodEndAtMidnight.setUTCHours(0, 0, 0, 0);
 
+        while (cursor <= periodEndAtMidnight) {
+          const isoDate = toIsoDate(cursor);
+          const baseHoursForDay = getBaseDayAvailability(availability, cursor);
+          const availableHoursForDay = getEffectiveDayAvailability(availability, cursor, context);
+          const isHoliday = context?.holidayDates.has(isoDate) ?? false;
+          const absenceFraction = Math.min(
+            1,
+            Math.max(0, context?.absenceFractionsByDate.get(isoDate) ?? 0),
+          );
+          if (availableHoursForDay > 0) {
+            const { allocatedHours: allocatedHoursForDay } = calculateAllocatedHoursForDay({
+              bookings: activeBookings,
+              date: cursor,
+              context,
+            });
+            if (allocatedHoursForDay + hoursPerDay > availableHoursForDay) {
+              const remainingHoursForDay = Math.max(0, availableHoursForDay - allocatedHoursForDay);
+              conflictDays.push(isoDate);
+              conflictDetails.push({
+                date: isoDate,
+                baseHours: round1(baseHoursForDay),
+                effectiveHours: round1(availableHoursForDay),
+                allocatedHours: round1(allocatedHoursForDay),
+                remainingHours: round1(remainingHoursForDay),
+                requestedHours: round1(hoursPerDay),
+                shortageHours: round1(Math.max(0, hoursPerDay - remainingHoursForDay)),
+                absenceFraction: round1(absenceFraction),
+                isHoliday,
+              });
+            }
+          }
+          cursor.setUTCDate(cursor.getUTCDate() + 1);
+        }
+
+        const remainingHours = Math.max(0, totalAvailableHours - allocatedHours);
+        const remainingHoursPerDay = averagePerWorkingDay(remainingHours, effectiveWorkingDays);
         const utilizationPercent =
           totalAvailableHours > 0
-            ? Math.min(100, (allocatedHoursPerDay / totalAvailableHours) * 100)
+            ? Math.min(100, (allocatedHours / totalAvailableHours) * 100)
             : 0;
 
-        const wouldExceedCapacity = allocatedHoursPerDay + hoursPerDay > totalAvailableHours;
-
         type SkillRow = { skill: string; category?: string; proficiency: number; isMainSkill?: boolean };
         let skills = resource.skills as unknown as SkillRow[];
 
@@ -73,9 +307,43 @@ export const staffingRouter = createTRPCRouter({
           lcrCents: resource.lcrCents,
           chargeabilityTarget: resource.chargeabilityTarget,
           currentUtilizationPercent: utilizationPercent,
-          hasAvailabilityConflicts: wouldExceedCapacity,
-          conflictDays: wouldExceedCapacity ? ["(multiple days)"] : [],
+          hasAvailabilityConflicts: conflictDays.length > 0,
+          conflictDays,
           valueScore: resource.valueScore ?? 0,
+          transparency: {
+	            location: {
+	              countryCode: resource.country?.code ?? null,
+	              countryName: resource.country?.name ?? null,
+	              federalState: resource.federalState ?? null,
+	              metroCityName: resource.metroCity?.name ?? null,
+	              label: createLocationLabel({
+	                countryCode: resource.country?.code ?? null,
+	                federalState: resource.federalState,
+	                metroCityName: resource.metroCity?.name ?? null,
+	              }),
+	            },
+            capacity: {
+              requestedHoursPerDay: round1(hoursPerDay),
+              requestedHoursTotal: round1(effectiveWorkingDays * hoursPerDay),
+              baseWorkingDays: round1(baseWorkingDays),
+              effectiveWorkingDays: round1(effectiveWorkingDays),
+              baseAvailableHours: round1(baseAvailableHours),
+              effectiveAvailableHours: round1(totalAvailableHours),
+              bookedHours: round1(allocatedHours),
+              remainingHours: round1(remainingHours),
+              remainingHoursPerDay,
+              holidayCount: holidayDates.length,
+              holidayWorkdayCount,
+              holidayHoursDeduction: round1(holidayHoursDeduction),
+              absenceDayEquivalent: round1(absenceDayEquivalent),
+              absenceHoursDeduction: round1(absenceHoursDeduction),
+            },
+            conflicts: {
+              count: conflictDays.length,
+              conflictDays,
+              details: conflictDetails,
+            },
+          },
         };
       });
 
@@ -85,15 +353,95 @@ export const staffingRouter = createTRPCRouter({
         resources: enrichedResources,
         budgetLcrCentsPerHour,
       } as unknown as Parameters<typeof rankResources>[0]);
+      const baseRankIndex = new Map(ranked.map((suggestion, index) => [suggestion.resourceId, index]));
 
       // Value-score tiebreaker: within 2 points, prefer higher valueScore
-      return ranked.sort((a, b) => {
+      return [...ranked].sort((a, b) => {
         if (Math.abs(a.score - b.score) <= 2) {
           const aVal = (enrichedResources.find((r) => r.id === a.resourceId)?.valueScore ?? 0);
           const bVal = (enrichedResources.find((r) => r.id === b.resourceId)?.valueScore ?? 0);
           return bVal - aVal;
         }
         return 0;
+      }).map((suggestion, index) => {
+        const resource = enrichedResources.find((item) => item.id === suggestion.resourceId);
+        const fallbackBreakdown = "breakdown" in suggestion
+          ? (suggestion as { breakdown?: { skillScore: number; availabilityScore: number; costScore: number; utilizationScore: number } }).breakdown
+          : undefined;
+        const scoreBreakdown = suggestion.scoreBreakdown ?? {
+          skillScore: fallbackBreakdown?.skillScore ?? 0,
+          availabilityScore: fallbackBreakdown?.availabilityScore ?? 0,
+          costScore: fallbackBreakdown?.costScore ?? 0,
+          utilizationScore: fallbackBreakdown?.utilizationScore ?? 0,
+          total: suggestion.score,
+        };
+        const baseRank = (baseRankIndex.get(suggestion.resourceId) ?? index) + 1;
+        const tieBreakerApplied = baseRank !== index + 1;
+
+        return {
+          ...suggestion,
+          resourceName: suggestion.resourceName ?? resource?.displayName ?? "",
+          eid: suggestion.eid ?? resource?.eid ?? "",
+          scoreBreakdown,
+          matchedSkills: suggestion.matchedSkills ?? requiredSkills.filter((skill) =>
+            resource?.skills.some((entry) => entry.skill.toLowerCase() === skill.trim().toLowerCase()),
+          ),
+          missingSkills: suggestion.missingSkills ?? requiredSkills.filter((skill) =>
+            !resource?.skills.some((entry) => entry.skill.toLowerCase() === skill.trim().toLowerCase()),
+          ),
+          availabilityConflicts: suggestion.availabilityConflicts ?? resource?.conflictDays ?? [],
+          estimatedDailyCostCents: suggestion.estimatedDailyCostCents ?? ((resource?.lcrCents ?? 0) * 8),
+          currentUtilization: suggestion.currentUtilization ?? round1(resource?.currentUtilizationPercent ?? 0),
+          valueScore: resource?.valueScore ?? 0,
+          location: resource?.transparency.location ?? {
+            countryCode: null,
+            countryName: null,
+            federalState: null,
+            metroCityName: null,
+            label: "",
+          },
+          capacity: resource?.transparency.capacity ?? {
+            requestedHoursPerDay: round1(hoursPerDay),
+            requestedHoursTotal: 0,
+            baseWorkingDays: 0,
+            effectiveWorkingDays: 0,
+            baseAvailableHours: 0,
+            effectiveAvailableHours: 0,
+            bookedHours: 0,
+            remainingHours: 0,
+            remainingHoursPerDay: 0,
+            holidayCount: 0,
+            holidayWorkdayCount: 0,
+            holidayHoursDeduction: 0,
+            absenceDayEquivalent: 0,
+            absenceHoursDeduction: 0,
+          },
+          conflicts: resource?.transparency.conflicts ?? {
+            count: 0,
+            conflictDays: [],
+            details: [],
+          },
+          ranking: {
+            rank: index + 1,
+            baseRank,
+            tieBreakerApplied,
+            tieBreakerReason: tieBreakerApplied
+              ? "Within 2 score points, higher value score moves the candidate up."
+              : null,
+            model: "Composite ranking across skill fit, availability, cost, and utilization.",
+            components: [
+              { key: "skillScore", label: "Skills", score: scoreBreakdown.skillScore },
+              { key: "availabilityScore", label: "Availability", score: scoreBreakdown.availabilityScore },
+              { key: "costScore", label: "Cost", score: scoreBreakdown.costScore },
+              { key: "utilizationScore", label: "Utilization", score: scoreBreakdown.utilizationScore },
+            ],
+          },
+          remainingHoursPerDay: resource?.transparency.capacity.remainingHoursPerDay ?? 0,
+          remainingHours: resource?.transparency.capacity.remainingHours ?? 0,
+          effectiveAvailableHours: resource?.transparency.capacity.effectiveAvailableHours ?? 0,
+          baseAvailableHours: resource?.transparency.capacity.baseAvailableHours ?? 0,
+          holidayHoursDeduction: resource?.transparency.capacity.holidayHoursDeduction ?? 0,
+        };
       });
     }),
 
@@ -117,6 +465,11 @@ export const staffingRouter = createTRPCRouter({
             displayName: true,
             chargeabilityTarget: true,
             availability: true,
+            countryId: true,
+            federalState: true,
+            metroCityId: true,
+            country: { select: { code: true } },
+            metroCity: { select: { name: true } },
           },
         }),
         "Resource",
@@ -128,24 +481,83 @@ export const staffingRouter = createTRPCRouter({
         resourceIds: [resource.id],
       });
 
-      return analyzeUtilization({
-        resource: {
+      const availability = resource.availability as unknown as WeekdayAvailability;
+      const contexts = await loadResourceDailyAvailabilityContexts(
+        ctx.db,
+        [{
           id: resource.id,
-          displayName: resource.displayName,
-          chargeabilityTarget: resource.chargeabilityTarget,
-          availability: resource.availability as unknown as import("@capakraken/shared").WeekdayAvailability,
-        },
-        allocations: resourceBookings.map((booking) => ({
-          startDate: booking.startDate,
-          endDate: booking.endDate,
-          hoursPerDay: booking.hoursPerDay,
-          status: booking.status,
-          projectName: booking.project.name,
-          isChargeable: booking.project.orderType === "CHARGEABLE",
-        })) as unknown as Parameters<typeof analyzeUtilization>[0]["allocations"],
-        analysisStart: input.startDate,
-        analysisEnd: input.endDate,
-      });
+          availability,
+          countryId: resource.countryId,
+          countryCode: resource.country?.code,
+          federalState: resource.federalState,
+          metroCityId: resource.metroCityId,
+          metroCityName: resource.metroCity?.name,
+        }],
+        input.startDate,
+        input.endDate,
+      );
+      const context = contexts.get(resource.id);
+      const activeBookings = resourceBookings.map((booking) => ({
+        startDate: booking.startDate,
+        endDate: booking.endDate,
+        hoursPerDay: booking.hoursPerDay,
+        status: booking.status,
+        projectName: booking.project.name,
+        isChargeable: booking.project.orderType === "CHARGEABLE",
+      }));
+
+      const overallocatedDays: string[] = [];
+      const underutilizedDays: string[] = [];
+      let totalAvailableHours = 0;
+      let totalChargeableHours = 0;
+      const cursor = new Date(input.startDate);
+      cursor.setUTCHours(0, 0, 0, 0);
+      const end = new Date(input.endDate);
+      end.setUTCHours(0, 0, 0, 0);
+
+      while (cursor <= end) {
+        const availableHoursForDay = getEffectiveDayAvailability(availability, cursor, context);
+        if (availableHoursForDay > 0) {
+          const { allocatedHours, chargeableHours } = calculateAllocatedHoursForDay({
+            bookings: activeBookings,
+            date: cursor,
+            context,
+          });
+          totalAvailableHours += availableHoursForDay;
+          totalChargeableHours += chargeableHours;
+
+          if (allocatedHours > availableHoursForDay) {
+            overallocatedDays.push(toIsoDate(cursor));
+          } else if (allocatedHours < availableHoursForDay * 0.5) {
+            underutilizedDays.push(toIsoDate(cursor));
+          }
+        }
+
+        cursor.setUTCDate(cursor.getUTCDate() + 1);
+      }
+
+      const currentChargeability = totalAvailableHours > 0
+        ? (totalChargeableHours / totalAvailableHours) * 100
+        : 0;
+
+      return {
+        resourceId: resource.id,
+        resourceName: resource.displayName,
+        chargeabilityTarget: resource.chargeabilityTarget,
+        currentChargeability,
+        chargeabilityGap: resource.chargeabilityTarget - currentChargeability,
+        allocations: activeBookings
+          .filter((booking) => ACTIVE_STATUSES.has(booking.status))
+          .map((booking) => ({
+            startDate: booking.startDate,
+            endDate: booking.endDate,
+            hoursPerDay: booking.hoursPerDay,
+            projectName: booking.projectName,
+            isChargeable: booking.isChargeable,
+          })),
+        overallocatedDays,
+        underutilizedDays,
+      };
     }),
 
   /**
@@ -168,6 +580,11 @@ export const staffingRouter = createTRPCRouter({
             id: true,
             displayName: true,
             availability: true,
+            countryId: true,
+            federalState: true,
+            metroCityId: true,
+            country: { select: { code: true } },
+            metroCity: { select: { name: true } },
           },
         }),
         "Resource",
@@ -179,21 +596,98 @@ export const staffingRouter = createTRPCRouter({
         resourceIds: [resource.id],
       });
 
-      return findCapacityWindows(
-        {
+      const availability = resource.availability as unknown as WeekdayAvailability;
+      const contexts = await loadResourceDailyAvailabilityContexts(
+        ctx.db,
+        [{
           id: resource.id,
-          displayName: resource.displayName,
-          availability: resource.availability as unknown as import("@capakraken/shared").WeekdayAvailability,
-        },
-        resourceBookings.map((booking) => ({
-          startDate: booking.startDate,
-          endDate: booking.endDate,
-          hoursPerDay: booking.hoursPerDay,
-          status: booking.status,
-        })) as Pick<import("@capakraken/shared").Allocation, "startDate" | "endDate" | "hoursPerDay" | "status">[],
+          availability,
+          countryId: resource.countryId,
+          countryCode: resource.country?.code,
+          federalState: resource.federalState,
+          metroCityId: resource.metroCityId,
+          metroCityName: resource.metroCity?.name,
+        }],
         input.startDate,
         input.endDate,
-        input.minAvailableHoursPerDay,
       );
+      const context = contexts.get(resource.id);
+      const windows: Array<{
+        resourceId: string;
+        resourceName: string;
+        startDate: Date;
+        endDate: Date;
+        availableHoursPerDay: number;
+        availableDays: number;
+        totalAvailableHours: number;
+      }> = [];
+
+      let windowStart: Date | null = null;
+      let windowAvailableDays = 0;
+      let windowTotalHours = 0;
+      let windowMinHours = Number.POSITIVE_INFINITY;
+
+      const closeWindow = (closeDate: Date) => {
+        if (windowStart && windowAvailableDays > 0) {
+          const previousDay = new Date(closeDate);
+          previousDay.setUTCDate(previousDay.getUTCDate() - 1);
+          windows.push({
+            resourceId: resource.id,
+            resourceName: resource.displayName,
+            startDate: new Date(windowStart),
+            endDate: previousDay,
+            availableHoursPerDay: Number.isFinite(windowMinHours) ? windowMinHours : 0,
+            availableDays: windowAvailableDays,
+            totalAvailableHours: Math.round(windowTotalHours * 10) / 10,
+          });
+        }
+        windowStart = null;
+        windowAvailableDays = 0;
+        windowTotalHours = 0;
+        windowMinHours = Number.POSITIVE_INFINITY;
+      };
+
+      const cursor = new Date(input.startDate);
+      cursor.setUTCHours(0, 0, 0, 0);
+      const end = new Date(input.endDate);
+      end.setUTCHours(0, 0, 0, 0);
+
+      while (cursor <= end) {
+        const availableHoursForDay = getEffectiveDayAvailability(availability, cursor, context);
+        if (availableHoursForDay <= 0) {
+          closeWindow(cursor);
+          cursor.setUTCDate(cursor.getUTCDate() + 1);
+          continue;
+        }
+
+        const { allocatedHours } = calculateAllocatedHoursForDay({
+          bookings: resourceBookings.map((booking) => ({
+            startDate: booking.startDate,
+            endDate: booking.endDate,
+            hoursPerDay: booking.hoursPerDay,
+            status: booking.status,
+          })),
+          date: cursor,
+          context,
+        });
+        const freeHours = Math.max(0, availableHoursForDay - allocatedHours);
+
+        if (freeHours >= input.minAvailableHoursPerDay) {
+          if (!windowStart) {
+            windowStart = new Date(cursor);
+          }
+          windowAvailableDays += 1;
+          windowTotalHours += freeHours;
+          windowMinHours = Math.min(windowMinHours, freeHours);
+        } else {
+          closeWindow(cursor);
+        }
+
+        cursor.setUTCDate(cursor.getUTCDate() + 1);
+      }
+
+      closeWindow(new Date(end.getTime() + 86_400_000));
+
+      return windows;
     }),
 });
diff --git a/packages/api/src/router/timeline.ts b/packages/api/src/router/timeline.ts
index 8cf2e20..eac30cd 100644
--- a/packages/api/src/router/timeline.ts
+++ b/packages/api/src/router/timeline.ts
@@ -26,6 +26,7 @@ import {
   emitAllocationUpdated,
   emitProjectShifted,
 } from "../sse/event-bus.js";
+import { asHolidayResolverDb, getResolvedCalendarHolidays } from "../lib/holiday-availability.js";
 import { buildTimelineShiftPlan } from "./timeline-shift-planning.js";
 import { createTRPCRouter, managerProcedure, protectedProcedure, requirePermission } from "../trpc.js";
 import { anonymizeResource, getAnonymizationDirectory } from "../lib/anonymization.js";
@@ -37,7 +38,7 @@ type ShiftDbClient = Pick<
 
 type TimelineEntriesDbClient = Pick<
   PrismaClient,
-  "demandRequirement" | "assignment" | "resource" | "project"
+  "demandRequirement" | "assignment" | "resource" | "project" | "holidayCalendar" | "country" | "metroCity"
 >;
 
 type TimelineEntriesFilters = {
@@ -325,6 +326,116 @@ export const timelineRouter = createTRPCRouter({
       };
     }),
 
+  getHolidayOverlays: protectedProcedure
+    .input(
+      z.object({
+        startDate: z.coerce.date(),
+        endDate: z.coerce.date(),
+        resourceIds: z.array(z.string()).optional(),
+        projectIds: z.array(z.string()).optional(),
+        clientIds: z.array(z.string()).optional(),
+        chapters: z.array(z.string()).optional(),
+        eids: z.array(z.string()).optional(),
+        countryCodes: z.array(z.string()).optional(),
+      }),
+    )
+    .query(async ({ ctx, input }) => {
+      const readModel = await loadTimelineEntriesReadModel(ctx.db, input);
+      const resourceIds = [...new Set(
+        readModel.assignments
+          .map((assignment) => assignment.resourceId)
+          .filter((resourceId): resourceId is string => typeof resourceId === "string" && resourceId.length > 0),
+      )];
+
+      if (input.resourceIds && input.resourceIds.length > 0) {
+        for (const resourceId of input.resourceIds) {
+          if (resourceId && !resourceIds.includes(resourceId)) {
+            resourceIds.push(resourceId);
+          }
+        }
+      }
+
+      const hasResourceFilters =
+        (input.chapters?.length ?? 0) > 0 ||
+        (input.eids?.length ?? 0) > 0 ||
+        (input.countryCodes?.length ?? 0) > 0;
+
+      if (hasResourceFilters) {
+        const andConditions: Record<string, unknown>[] = [];
+        if (input.chapters && input.chapters.length > 0) {
+          andConditions.push({ chapter: { in: input.chapters } });
+        }
+        if (input.eids && input.eids.length > 0) {
+          andConditions.push({ eid: { in: input.eids } });
+        }
+        if (input.countryCodes && input.countryCodes.length > 0) {
+          andConditions.push({ country: { code: { in: input.countryCodes } } });
+        }
+
+        const matchingResources = await ctx.db.resource.findMany({
+          // eslint-disable-next-line @typescript-eslint/no-explicit-any
+          where: (andConditions.length === 1 ? andConditions[0]! : { AND: andConditions }) as any,
+          select: { id: true },
+        });
+
+        for (const resource of matchingResources) {
+          if (!resourceIds.includes(resource.id)) {
+            resourceIds.push(resource.id);
+          }
+        }
+      }
+
+      if (resourceIds.length === 0) {
+        return [];
+      }
+
+      const resources = await ctx.db.resource.findMany({
+        where: { id: { in: resourceIds } },
+        select: {
+          id: true,
+          countryId: true,
+          federalState: true,
+          metroCityId: true,
+          country: { select: { code: true } },
+          metroCity: { select: { name: true } },
+        },
+      });
+
+      const overlays = await Promise.all(
+        resources.map(async (resource) => {
+          const holidays = await getResolvedCalendarHolidays(asHolidayResolverDb(ctx.db), {
+            periodStart: input.startDate,
+            periodEnd: input.endDate,
+            countryId: resource.countryId,
+            countryCode: resource.country?.code ?? null,
+            federalState: resource.federalState,
+            metroCityId: resource.metroCityId,
+            metroCityName: resource.metroCity?.name ?? null,
+          });
+
+          return holidays.map((holiday) => {
+            const holidayDate = new Date(`${holiday.date}T00:00:00.000Z`);
+            return {
+              id: `calendar-holiday:${resource.id}:${holiday.date}`,
+              resourceId: resource.id,
+              type: VacationType.PUBLIC_HOLIDAY,
+              status: "APPROVED" as const,
+              startDate: holidayDate,
+              endDate: holidayDate,
+              note: holiday.name,
+            };
+          });
+        }),
+      );
+
+      return overlays.flat().sort((left, right) => {
+        if (left.resourceId !== right.resourceId) {
+          return left.resourceId.localeCompare(right.resourceId);
+        }
+        return left.startDate.getTime() - right.startDate.getTime();
+      });
+    }),
+
   /**
    * Get full project context for a project:
    * - project with staffingReqs and budget
diff --git a/packages/api/src/router/vacation.ts b/packages/api/src/router/vacation.ts
index ea586f6..b4aa26d 100644
--- a/packages/api/src/router/vacation.ts
+++ b/packages/api/src/router/vacation.ts
@@ -1,4 +1,4 @@
-import { UpdateVacationStatusSchema, getPublicHolidays, buildTaskAction } from "@capakraken/shared";
+import { UpdateVacationStatusSchema, buildTaskAction } from "@capakraken/shared";
 import { VacationStatus, VacationType } from "@capakraken/db";
 import { TRPCError } from "@trpc/server";
 import { z } from "zod";
@@ -12,9 +12,82 @@ import { anonymizeResource, anonymizeUser, getAnonymizationDirectory } from "../
 import { checkVacationConflicts, checkBatchVacationConflicts } from "../lib/vacation-conflicts.js";
 import { dispatchWebhooks } from "../lib/webhook-dispatcher.js";
 import { createAuditEntry } from "../lib/audit.js";
+import { asHolidayResolverDb, getResolvedCalendarHolidays } from "../lib/holiday-availability.js";
+import { countCalendarDaysInPeriod, countVacationChargeableDays } from "../lib/vacation-day-count.js";
+import { loadResourceHolidayContext } from "../lib/resource-holiday-context.js";
 
 /** Types that consume from annual leave balance */
-const BALANCE_TYPES = [VacationType.ANNUAL, VacationType.OTHER];
+const BALANCE_TYPES = new Set<VacationType>([VacationType.ANNUAL, VacationType.OTHER]);
+
+function isSameUtcDay(left: Date, right: Date): boolean {
+  return left.toISOString().slice(0, 10) === right.toISOString().slice(0, 10);
+}
+
+const PreviewVacationRequestSchema = z.object({
+  resourceId: z.string(),
+  type: z.nativeEnum(VacationType),
+  startDate: z.coerce.date(),
+  endDate: z.coerce.date(),
+  isHalfDay: z.boolean().optional(),
+}).superRefine((data, ctx) => {
+  if (data.endDate < data.startDate) {
+    ctx.addIssue({
+      code: z.ZodIssueCode.custom,
+      message: "End date must be after start date",
+      path: ["endDate"],
+    });
+  }
+
+  if (data.isHalfDay && !isSameUtcDay(data.startDate, data.endDate)) {
+    ctx.addIssue({
+      code: z.ZodIssueCode.custom,
+      message: "Half-day requests must start and end on the same day",
+      path: ["isHalfDay"],
+    });
+  }
+});
+
+const CreateVacationRequestSchema = z.object({
+  resourceId: z.string(),
+  type: z.nativeEnum(VacationType),
+  startDate: z.coerce.date(),
+  endDate: z.coerce.date(),
+  note: z.string().max(500).optional(),
+  isHalfDay: z.boolean().optional(),
+  halfDayPart: z.enum(["MORNING", "AFTERNOON"]).optional(),
+}).superRefine((data, ctx) => {
+  if (data.endDate < data.startDate) {
+    ctx.addIssue({
+      code: z.ZodIssueCode.custom,
+      message: "End date must be after start date",
+      path: ["endDate"],
+    });
+  }
+
+  if (data.isHalfDay && !isSameUtcDay(data.startDate, data.endDate)) {
+    ctx.addIssue({
+      code: z.ZodIssueCode.custom,
+      message: "Half-day requests must start and end on the same day",
+      path: ["isHalfDay"],
+    });
+  }
+
+  if (data.isHalfDay && !data.halfDayPart) {
+    ctx.addIssue({
+      code: z.ZodIssueCode.custom,
+      message: "Half-day requests require a half-day part",
+      path: ["halfDayPart"],
+    });
+  }
+
+  if (!data.isHalfDay && data.halfDayPart) {
+    ctx.addIssue({
+      code: z.ZodIssueCode.custom,
+      message: "Half-day part is only allowed for half-day requests",
+      path: ["halfDayPart"],
+    });
+  }
+});
 
 function anonymizeVacationRecord<T extends {
   resource?: { id: string } | null;
@@ -78,6 +151,64 @@ async function notifyVacationStatus(
 }
 
 export const vacationRouter = createTRPCRouter({
+  previewRequest: protectedProcedure
+    .input(PreviewVacationRequestSchema)
+    .query(async ({ ctx, input }) => {
+      const holidayContext = await loadResourceHolidayContext(
+        ctx.db,
+        input.resourceId,
+        input.startDate,
+        input.endDate,
+      );
+      const vacation = {
+        startDate: input.startDate,
+        endDate: input.endDate,
+        isHalfDay: input.isHalfDay ?? false,
+      };
+      const requestedDays = countCalendarDaysInPeriod(vacation);
+      const effectiveDays = BALANCE_TYPES.has(input.type)
+        ? countVacationChargeableDays({
+          vacation,
+          countryCode: holidayContext.countryCode,
+          federalState: holidayContext.federalState,
+          metroCityName: holidayContext.metroCityName,
+          calendarHolidayStrings: holidayContext.calendarHolidayStrings,
+          publicHolidayStrings: holidayContext.publicHolidayStrings,
+        })
+        : requestedDays;
+      const publicHolidayDates = [...new Set([
+        ...holidayContext.calendarHolidayStrings,
+        ...holidayContext.publicHolidayStrings,
+      ])].sort();
+      const holidayDetails = publicHolidayDates.map((date) => ({
+        date,
+        source:
+          holidayContext.calendarHolidayStrings.includes(date) && holidayContext.publicHolidayStrings.includes(date)
+            ? "CALENDAR_AND_LEGACY"
+            : holidayContext.calendarHolidayStrings.includes(date)
+              ? "CALENDAR"
+              : "LEGACY_PUBLIC_HOLIDAY",
+      }));
+
+      return {
+        requestedDays,
+        effectiveDays,
+        deductedDays: BALANCE_TYPES.has(input.type) ? effectiveDays : 0,
+        publicHolidayDates,
+        holidayDetails,
+        holidayContext: {
+          countryCode: holidayContext.countryCode ?? null,
+          countryName: holidayContext.countryName ?? null,
+          federalState: holidayContext.federalState ?? null,
+          metroCityName: holidayContext.metroCityName ?? null,
+          sources: {
+            hasCalendarHolidays: holidayContext.calendarHolidayStrings.length > 0,
+            hasLegacyPublicHolidayEntries: holidayContext.publicHolidayStrings.length > 0,
+          },
+        },
+      };
+    }),
+
   /**
    * List vacations with optional filters.
    */
@@ -141,21 +272,15 @@ export const vacationRouter = createTRPCRouter({
    * Adds isHalfDay + halfDayPart support.
    */
   create: protectedProcedure
-    .input(
-      z.object({
-        resourceId: z.string(),
-        type: z.nativeEnum(VacationType),
-        startDate: z.coerce.date(),
-        endDate: z.coerce.date(),
-        note: z.string().max(500).optional(),
-        isHalfDay: z.boolean().optional(),
-        halfDayPart: z.enum(["MORNING", "AFTERNOON"]).optional(),
-      }).refine((d) => d.endDate >= d.startDate, {
-        message: "End date must be after start date",
-        path: ["endDate"],
-      }),
-    )
+    .input(CreateVacationRequestSchema)
     .mutation(async ({ ctx, input }) => {
+      if (input.type === VacationType.PUBLIC_HOLIDAY) {
+        throw new TRPCError({
+          code: "BAD_REQUEST",
+          message: "Public holidays must be managed via Holiday Calendars or the legacy holiday import, not via manual vacation requests",
+        });
+      }
+
       const userRecord = await ctx.db.user.findUnique({
         where: { email: ctx.session.user?.email ?? "" },
         select: { id: true, systemRole: true },
@@ -186,6 +311,9 @@ export const vacationRouter = createTRPCRouter({
           status: { in: ["APPROVED", "PENDING"] },
           startDate: { lte: input.endDate },
           endDate: { gte: input.startDate },
+          ...(BALANCE_TYPES.has(input.type)
+            ? { type: { not: VacationType.PUBLIC_HOLIDAY } }
+            : {}),
         },
       });
       if (overlapping) {
@@ -195,6 +323,35 @@ export const vacationRouter = createTRPCRouter({
         });
       }
 
+      let effectiveDays: number | null = null;
+      if (BALANCE_TYPES.has(input.type)) {
+        const holidayContext = await loadResourceHolidayContext(
+          ctx.db,
+          input.resourceId,
+          input.startDate,
+          input.endDate,
+        );
+        effectiveDays = countVacationChargeableDays({
+          vacation: {
+            startDate: input.startDate,
+            endDate: input.endDate,
+            isHalfDay: input.isHalfDay ?? false,
+          },
+          countryCode: holidayContext.countryCode,
+          federalState: holidayContext.federalState,
+          metroCityName: holidayContext.metroCityName,
+          calendarHolidayStrings: holidayContext.calendarHolidayStrings,
+          publicHolidayStrings: holidayContext.publicHolidayStrings,
+        });
+
+        if (effectiveDays <= 0) {
+          throw new TRPCError({
+            code: "BAD_REQUEST",
+            message: "Selected vacation period only contains public holidays and does not deduct any vacation days",
+          });
+        }
+      }
+
       const status = isManager ? VacationStatus.APPROVED : VacationStatus.PENDING;
 
       const vacation = await ctx.db.vacation.create({
@@ -265,7 +422,8 @@ export const vacationRouter = createTRPCRouter({
       }
 
       const directory = await getAnonymizationDirectory(ctx.db);
-      return anonymizeVacationRecord(vacation, directory);
+      const result = anonymizeVacationRecord(vacation, directory);
+      return effectiveDays === null ? result : { ...result, effectiveDays };
     }),
 
   /**
@@ -698,19 +856,25 @@ export const vacationRouter = createTRPCRouter({
       }),
     )
     .mutation(async ({ ctx, input }) => {
-      const holidays = getPublicHolidays(input.year, input.federalState);
-      if (holidays.length === 0) {
-        return { created: 0 };
-      }
-
       const resources = await ctx.db.resource.findMany({
         where: {
           isActive: true,
           ...(input.chapter ? { chapter: input.chapter } : {}),
         },
-        select: { id: true },
+        select: {
+          id: true,
+          federalState: true,
+          countryId: true,
+          metroCityId: true,
+          country: { select: { code: true } },
+          metroCity: { select: { name: true } },
+        },
       });
 
+      if (resources.length === 0) {
+        return { created: 0 };
+      }
+
       const adminUser = await ctx.db.user.findUnique({
         where: { email: ctx.session.user?.email ?? "" },
         select: { id: true },
@@ -718,8 +882,19 @@ export const vacationRouter = createTRPCRouter({
       if (!adminUser) throw new TRPCError({ code: "UNAUTHORIZED" });
 
       let created = 0;
+      let holidayCount = 0;
 
       for (const resource of resources) {
+        const holidays = await getResolvedCalendarHolidays(asHolidayResolverDb(ctx.db), {
+          periodStart: new Date(`${input.year}-01-01T00:00:00.000Z`),
+          periodEnd: new Date(`${input.year}-12-31T00:00:00.000Z`),
+          countryId: resource.countryId,
+          countryCode: resource.country?.code,
+          federalState: input.federalState ?? resource.federalState,
+          metroCityId: resource.metroCityId,
+          metroCityName: resource.metroCity?.name,
+        });
+        holidayCount += holidays.length;
         for (const holiday of holidays) {
           const startDate = new Date(holiday.date);
           const endDate = new Date(holiday.date);
@@ -771,12 +946,12 @@ export const vacationRouter = createTRPCRouter({
         entityName: `Public Holidays ${input.year}${input.federalState ? ` (${input.federalState})` : ""}`,
         action: "CREATE",
         userId: adminUser.id,
-        after: { created, holidays: holidays.length, resources: resources.length, year: input.year, federalState: input.federalState } as unknown as Record<string, unknown>,
+        after: { created, holidays: holidayCount, resources: resources.length, year: input.year, federalState: input.federalState } as unknown as Record<string, unknown>,
         source: "ui",
         summary: `Batch created ${created} public holidays for ${resources.length} resources (${input.year})`,
       });
 
-      return { created, holidays: holidays.length, resources: resources.length };
+      return { created, holidays: holidayCount, resources: resources.length };
     }),
 
   /**
diff --git a/packages/api/src/trpc.ts b/packages/api/src/trpc.ts
index 32196aa..f638b6b 100644
--- a/packages/api/src/trpc.ts
+++ b/packages/api/src/trpc.ts
@@ -89,6 +89,7 @@ export const publicProcedure = t.procedure;
 
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
 const withLogging = t.middleware(loggingMiddleware as any);
+const isE2eTestMode = process.env["E2E_TEST_MODE"] === "true";
 
 /**
  * Protected procedure — requires authenticated session AND a valid DB user record.
@@ -103,12 +104,14 @@ export const protectedProcedure = t.procedure.use(withLogging).use(({ ctx, next
   }
 
   // Rate limit by user ID
-  const rateLimitResult = apiRateLimiter(ctx.dbUser.id);
-  if (!rateLimitResult.allowed) {
-    throw new TRPCError({
-      code: "TOO_MANY_REQUESTS",
-      message: `Rate limit exceeded. Try again after ${rateLimitResult.resetAt.toISOString()}`,
-    });
+  if (!isE2eTestMode) {
+    const rateLimitResult = apiRateLimiter(ctx.dbUser.id);
+    if (!rateLimitResult.allowed) {
+      throw new TRPCError({
+        code: "TOO_MANY_REQUESTS",
+        message: `Rate limit exceeded. Try again after ${rateLimitResult.resetAt.toISOString()}`,
+      });
+    }
   }
 
   return next({
diff --git a/packages/application/src/__tests__/dashboard.test.ts b/packages/application/src/__tests__/dashboard.test.ts
index 8d75620..16df044 100644
--- a/packages/application/src/__tests__/dashboard.test.ts
+++ b/packages/application/src/__tests__/dashboard.test.ts
@@ -1,9 +1,11 @@
 import { describe, expect, it, vi } from "vitest";
 import {
+  getDashboardBudgetForecast,
   getDashboardChargeabilityOverview,
   getDashboardDemand,
   getDashboardOverview,
   getDashboardPeakTimes,
+  getDashboardProjectHealth,
   getDashboardTopValueResources,
 } from "../index.js";
 
@@ -285,8 +287,28 @@ describe("dashboard use-cases", () => {
       },
       resource: {
         findMany: vi.fn().mockResolvedValue([
-          { availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 } },
-          { availability: { monday: 6, tuesday: 6, wednesday: 6, thursday: 6, friday: 6 } },
+          {
+            id: "res_1",
+            displayName: "Alice",
+            chapter: "CGI",
+            availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+            countryId: "country_de",
+            federalState: null,
+            metroCityId: "city_1",
+            country: { code: "DE" },
+            metroCity: { name: "Munich" },
+          },
+          {
+            id: "res_2",
+            displayName: "Bob",
+            chapter: "Lighting",
+            availability: { monday: 6, tuesday: 6, wednesday: 6, thursday: 6, friday: 6 },
+            countryId: "country_de",
+            federalState: null,
+            metroCityId: "city_2",
+            country: { code: "DE" },
+            metroCity: { name: "Hamburg" },
+          },
         ]),
       },
     };
@@ -299,15 +321,113 @@ describe("dashboard use-cases", () => {
     });
 
     expect(result).toEqual([
-      {
+      expect.objectContaining({
         period: "2026-03",
         groups: [
-          { name: "ALPHA", hours: 8 },
+          { name: "ALPHA", hours: 4 },
           { name: "BRAVO", hours: 3 },
         ],
-        totalHours: 11,
-        capacityHours: 308,
+        totalHours: 7,
+        capacityHours: 28,
+        derivation: expect.objectContaining({
+          bookedHours: 7,
+          capacityHours: 28,
+          remainingCapacityHours: 21,
+          overbookedHours: 0,
+          utilizationPct: 25,
+          groupCount: 2,
+          resourceCount: 2,
+        }),
+      }),
+    ]);
+  });
+
+  it("provides department capacity and utilization details for chapter grouping", async () => {
+    const db = {
+      assignment: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            id: "assign_1",
+            projectId: "proj_1",
+            resourceId: "res_1",
+            status: "ACTIVE",
+            startDate: new Date("2026-03-02T00:00:00.000Z"),
+            endDate: new Date("2026-03-02T00:00:00.000Z"),
+            hoursPerDay: 8,
+            dailyCostCents: 0,
+            project: { id: "proj_1", name: "Alpha", shortCode: "ALPHA", status: "ACTIVE", orderType: "FIXED" },
+            resource: { id: "res_1", displayName: "Alice", chapter: "CGI" },
+          },
+        ]),
       },
+      resource: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            id: "res_1",
+            displayName: "Alice",
+            chapter: "CGI",
+            availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+            countryId: "country_de",
+            federalState: null,
+            metroCityId: "city_1",
+            country: { code: "DE" },
+            metroCity: { name: "Munich" },
+          },
+          {
+            id: "res_2",
+            displayName: "Bob",
+            chapter: "Lighting",
+            availability: { monday: 4, tuesday: 4, wednesday: 4, thursday: 4, friday: 4 },
+            countryId: "country_de",
+            federalState: null,
+            metroCityId: "city_2",
+            country: { code: "DE" },
+            metroCity: { name: "Hamburg" },
+          },
+        ]),
+      },
+    };
+
+    const result = await getDashboardPeakTimes(db as never, {
+      startDate: new Date("2026-03-02T00:00:00.000Z"),
+      endDate: new Date("2026-03-02T00:00:00.000Z"),
+      granularity: "month",
+      groupBy: "chapter",
+    });
+
+    expect(result).toEqual([
+      expect.objectContaining({
+        period: "2026-03",
+        groups: [
+          expect.objectContaining({
+            name: "CGI",
+            hours: 8,
+            capacityHours: 8,
+            remainingHours: 0,
+            overbookedHours: 0,
+            utilizationPct: 100,
+          }),
+          expect.objectContaining({
+            name: "Lighting",
+            hours: 0,
+            capacityHours: 4,
+            remainingHours: 4,
+            overbookedHours: 0,
+            utilizationPct: 0,
+          }),
+        ],
+        totalHours: 8,
+        capacityHours: 12,
+        derivation: expect.objectContaining({
+          bookedHours: 8,
+          capacityHours: 12,
+          remainingCapacityHours: 4,
+          overbookedHours: 0,
+          utilizationPct: 67,
+          groupCount: 2,
+          resourceCount: 2,
+        }),
+      }),
     ]);
   });
 
@@ -513,6 +633,396 @@ describe("dashboard use-cases", () => {
     expect(withProposed.top[0]?.expectedChargeability).toBe(5);
   });
 
+  it("excludes regional public holidays from dashboard chargeability availability and bookings", async () => {
+    const db = {
+      assignment: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            id: "assign_holiday",
+            projectId: "proj_1",
+            resourceId: "res_by",
+            status: "CONFIRMED",
+            startDate: new Date("2026-01-06T00:00:00.000Z"),
+            endDate: new Date("2026-01-06T00:00:00.000Z"),
+            hoursPerDay: 8,
+            dailyCostCents: 0,
+            project: {
+              id: "proj_1",
+              name: "Alpha",
+              shortCode: "ALPHA",
+              status: "ACTIVE",
+              orderType: "CLIENT",
+              dynamicFields: null,
+            },
+            resource: {
+              id: "res_by",
+              displayName: "Bruce",
+              chapter: "CGI",
+            },
+          },
+        ]),
+      },
+      resource: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            id: "res_by",
+            eid: "bruce.banner",
+            displayName: "Bruce",
+            chapter: "CGI",
+            countryId: "country_de",
+            federalState: "BY",
+            metroCityId: "city_augsburg",
+            departed: false,
+            chargeabilityTarget: 80,
+            country: {
+              id: "country_de",
+              code: "DE",
+            },
+            metroCity: {
+              id: "city_augsburg",
+              name: "Augsburg",
+            },
+            availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+          },
+        ]),
+      },
+    };
+
+    const result = await getDashboardChargeabilityOverview(db as never, {
+      now: new Date("2026-01-15T00:00:00.000Z"),
+      topN: 10,
+      watchlistThreshold: 15,
+    });
+
+    expect(result.top[0]?.actualChargeability).toBe(0);
+    expect(result.top[0]?.expectedChargeability).toBe(0);
+    expect(result.top[0]).toEqual(
+      expect.objectContaining({
+        countryCode: "DE",
+        federalState: "BY",
+        metroCityName: "Augsburg",
+        derivation: expect.objectContaining({
+          weeklyAvailabilityHours: 40,
+          baseAvailableHours: 184,
+          effectiveAvailableHours: 168,
+          publicHolidayCount: 2,
+          publicHolidayWorkdayCount: 2,
+          publicHolidayHoursDeduction: 16,
+          absenceHoursDeduction: 0,
+          actualBookedHours: 0,
+          expectedBookedHours: 0,
+          targetBookedHours: 134.4,
+          unassignedHours: 168,
+        }),
+      }),
+    );
+  });
+
+  it("uses holiday-aware capacity in peak times for regional calendars", async () => {
+    const db = {
+      assignment: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            id: "assign_1",
+            projectId: "proj_1",
+            resourceId: "res_by",
+            status: "CONFIRMED",
+            startDate: new Date("2026-01-05T00:00:00.000Z"),
+            endDate: new Date("2026-01-06T00:00:00.000Z"),
+            hoursPerDay: 8,
+            dailyCostCents: 0,
+            project: { id: "proj_1", name: "Alpha", shortCode: "ALPHA", status: "ACTIVE", orderType: "FIXED" },
+            resource: { id: "res_by", displayName: "Bruce", chapter: "CGI" },
+          },
+        ]),
+      },
+      resource: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            id: "res_by",
+            displayName: "Bruce",
+            chapter: "CGI",
+            availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+            countryId: "country_de",
+            federalState: "BY",
+            metroCityId: "city_munich",
+            country: { code: "DE" },
+            metroCity: { name: "Munich" },
+          },
+        ]),
+      },
+    };
+
+    const result = await getDashboardPeakTimes(db as never, {
+      startDate: new Date("2026-01-05T00:00:00.000Z"),
+      endDate: new Date("2026-01-06T00:00:00.000Z"),
+      granularity: "month",
+      groupBy: "project",
+    });
+
+    expect(result).toEqual([
+      expect.objectContaining({
+        period: "2026-01",
+        groups: [{ name: "ALPHA", hours: 8 }],
+        totalHours: 8,
+        capacityHours: 8,
+        derivation: expect.objectContaining({
+          bookedHours: 8,
+          capacityHours: 8,
+          remainingCapacityHours: 0,
+          overbookedHours: 0,
+          utilizationPct: 100,
+          groupCount: 1,
+          resourceCount: 1,
+        }),
+      }),
+    ]);
+  });
+
+  it("does not burn budget on regional public holidays", async () => {
+    const db = {
+      project: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            id: "proj_1",
+            name: "Alpha",
+            shortCode: "ALPHA",
+            budgetCents: 10_000,
+            startDate: new Date("2026-01-01T00:00:00.000Z"),
+            endDate: new Date("2026-12-31T00:00:00.000Z"),
+            clientId: null,
+            client: null,
+          },
+        ]),
+      },
+      assignment: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            projectId: "proj_1",
+            startDate: new Date("2026-01-05T00:00:00.000Z"),
+            endDate: new Date("2026-01-06T00:00:00.000Z"),
+            dailyCostCents: 1_000,
+            resource: {
+              id: "res_by",
+              availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+              countryId: "country_de",
+              federalState: "BY",
+              metroCityId: "city_munich",
+              country: { code: "DE" },
+              metroCity: { name: "Munich" },
+            },
+          },
+        ]),
+      },
+    };
+
+    const result = await getDashboardBudgetForecast(db as never);
+
+    expect(result).toEqual([
+      expect.objectContaining({
+        projectId: "proj_1",
+        shortCode: "ALPHA",
+        spentCents: 1_000,
+        remainingCents: 9_000,
+        activeAssignmentCount: 0,
+        calendarLocations: [],
+      }),
+    ]);
+  });
+
+  it("returns burn derivation and calendar basis for active project forecasts", async () => {
+    vi.useFakeTimers();
+    vi.setSystemTime(new Date("2026-01-15T00:00:00.000Z"));
+
+    try {
+      const db = {
+        project: {
+          findMany: vi.fn().mockResolvedValue([
+            {
+              id: "proj_1",
+              name: "Gelddruckmaschine",
+              shortCode: "GDM",
+              budgetCents: 100_000,
+              startDate: new Date("2026-01-01T00:00:00.000Z"),
+              endDate: new Date("2026-12-31T00:00:00.000Z"),
+              clientId: "client_1",
+              client: { name: "ACME" },
+            },
+          ]),
+        },
+        assignment: {
+          findMany: vi.fn().mockResolvedValue([
+            {
+              projectId: "proj_1",
+              startDate: new Date("2026-01-05T00:00:00.000Z"),
+              endDate: new Date("2026-01-06T00:00:00.000Z"),
+              dailyCostCents: 1_000,
+              resource: {
+                id: "res_by",
+                availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+                countryId: "country_de",
+                federalState: "BY",
+                metroCityId: "city_munich",
+                country: { code: "DE", name: "Deutschland" },
+                metroCity: { name: "Munich" },
+              },
+            },
+            {
+              projectId: "proj_1",
+              startDate: new Date("2026-01-15T00:00:00.000Z"),
+              endDate: new Date("2026-01-16T00:00:00.000Z"),
+              dailyCostCents: 2_000,
+              resource: {
+                id: "res_hh",
+                availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+                countryId: "country_de",
+                federalState: "HH",
+                metroCityId: "city_hamburg",
+                country: { code: "DE", name: "Deutschland" },
+                metroCity: { name: "Hamburg" },
+              },
+            },
+          ]),
+        },
+      };
+
+      const result = await getDashboardBudgetForecast(db as never);
+
+      expect(result).toEqual([
+        expect.objectContaining({
+          projectId: "proj_1",
+          shortCode: "GDM",
+          budgetCents: 100_000,
+          spentCents: 5_000,
+          remainingCents: 95_000,
+          burnRate: 4_000,
+          activeAssignmentCount: 1,
+          calendarLocations: [
+            expect.objectContaining({
+              countryCode: "DE",
+              countryName: "Deutschland",
+              federalState: "HH",
+              metroCityName: "Hamburg",
+              activeAssignmentCount: 1,
+              burnRateCents: 4_000,
+            }),
+          ],
+        }),
+      ]);
+    } finally {
+      vi.useRealTimers();
+    }
+  });
+
+  it("excludes regional public holidays from overview budget totals", async () => {
+    const db = {
+      assignment: {
+        findMany: vi
+          .fn()
+          .mockResolvedValueOnce([])
+          .mockResolvedValueOnce([
+            {
+              startDate: new Date("2026-01-05T00:00:00.000Z"),
+              endDate: new Date("2026-01-06T00:00:00.000Z"),
+              dailyCostCents: 1_000,
+              resource: {
+                id: "res_by",
+                availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+                countryId: "country_de",
+                federalState: "BY",
+                metroCityId: "city_munich",
+                country: { code: "DE" },
+                metroCity: { name: "Munich" },
+              },
+            },
+          ]),
+      },
+      resource: {
+        count: vi
+          .fn()
+          .mockResolvedValueOnce(1)
+          .mockResolvedValueOnce(1),
+        findMany: vi.fn().mockResolvedValue([{ chapter: "CGI", chargeabilityTarget: 80 }]),
+      },
+      project: {
+        count: vi.fn().mockResolvedValue(1),
+        findMany: vi.fn().mockResolvedValue([{ status: "ACTIVE", budgetCents: 10_000 }]),
+      },
+      demandRequirement: {
+        findMany: vi.fn().mockResolvedValue([]),
+      },
+      auditLog: {
+        findMany: vi.fn().mockResolvedValue([]),
+      },
+    };
+
+    const result = await getDashboardOverview(db as never);
+
+    expect(result.budgetSummary).toEqual({
+      totalBudgetCents: 10_000,
+      totalCostCents: 1_000,
+      avgUtilizationPercent: 10,
+    });
+  });
+
+  it("excludes regional public holidays from project health budget usage", async () => {
+    const db = {
+      project: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            id: "proj_1",
+            name: "Alpha",
+            shortCode: "ALPHA",
+            budgetCents: 10_000,
+            endDate: new Date("2026-12-31T00:00:00.000Z"),
+            clientId: null,
+            client: null,
+            demandRequirements: [],
+          },
+        ]),
+      },
+      assignment: {
+        findMany: vi.fn().mockResolvedValue([
+          {
+            projectId: "proj_1",
+            startDate: new Date("2026-01-05T00:00:00.000Z"),
+            endDate: new Date("2026-01-06T00:00:00.000Z"),
+            dailyCostCents: 1_000,
+            resource: {
+              id: "res_by",
+              availability: { monday: 8, tuesday: 8, wednesday: 8, thursday: 8, friday: 8 },
+              countryId: "country_de",
+              federalState: "BY",
+              metroCityId: "city_munich",
+              country: { code: "DE" },
+              metroCity: { name: "Munich" },
+            },
+          },
+        ]),
+      },
+    };
+
+    const result = await getDashboardProjectHealth(db as never);
+
+    expect(result).toEqual([
+      expect.objectContaining({
+        shortCode: "ALPHA",
+        budgetHealth: 90,
+        spentCents: 1_000,
+        budgetUtilizationPercent: 10,
+        calendarLocations: [
+          expect.objectContaining({
+            countryCode: "DE",
+            federalState: "BY",
+            metroCityName: "Munich",
+            assignmentCount: 1,
+            spentCents: 1_000,
+          }),
+        ],
+      }),
+    ]);
+  });
+
   it("returns distinct resource counts for chapter demand grouping", async () => {
     const db = {
       demandRequirement: {
@@ -606,14 +1116,21 @@ describe("dashboard use-cases", () => {
     });
 
     expect(result).toEqual([
-      {
+      expect.objectContaining({
         id: "CGI",
         name: "CGI",
         shortCode: "CGI",
         allocatedHours: 19,
         requiredFTEs: 0,
         resourceCount: 2,
-      },
+        derivation: expect.objectContaining({
+          periodWorkingHoursBase: 176,
+          requiredHours: null,
+          fillPct: null,
+          demandSource: "NONE",
+          calendarLocations: [],
+        }),
+      }),
     ]);
   });
 
@@ -738,14 +1255,21 @@ describe("dashboard use-cases", () => {
     });
 
     expect(result).toEqual([
-      {
+      expect.objectContaining({
         id: "proj_1",
         name: "Alpha",
         shortCode: "ALPHA",
         allocatedHours: 18,
         requiredFTEs: 3.5,
         resourceCount: 3,
-      },
+        derivation: expect.objectContaining({
+          periodWorkingHoursBase: 176,
+          requiredHours: 616,
+          fillPct: 3,
+          demandSource: "DEMAND_REQUIREMENTS",
+          calendarLocations: [],
+        }),
+      }),
     ]);
   });
 
@@ -802,14 +1326,20 @@ describe("dashboard use-cases", () => {
     });
 
     expect(result).toEqual([
-      {
+      expect.objectContaining({
         id: "proj_1",
         name: "Alpha",
         shortCode: "ALPHA",
         allocatedHours: 8,
         requiredFTEs: 2,
         resourceCount: 1,
-      },
+        derivation: expect.objectContaining({
+          periodWorkingHoursBase: 176,
+          requiredHours: 352,
+          fillPct: 2,
+          demandSource: "DEMAND_REQUIREMENTS",
+        }),
+      }),
     ]);
   });
 
@@ -865,14 +1395,20 @@ describe("dashboard use-cases", () => {
     });
 
     expect(result).toEqual([
-      {
+      expect.objectContaining({
         id: "proj_1",
         name: "Alpha",
         shortCode: "ALPHA",
         allocatedHours: 16,
         requiredFTEs: 2,
         resourceCount: 1,
-      },
+        derivation: expect.objectContaining({
+          periodWorkingHoursBase: 176,
+          requiredHours: 352,
+          fillPct: 5,
+          demandSource: "PROJECT_STAFFING_REQS",
+        }),
+      }),
     ]);
   });
 });
diff --git a/packages/application/src/__tests__/demand-assignment.test.ts b/packages/application/src/__tests__/demand-assignment.test.ts
index 30d5f5e..5e6b312 100644
--- a/packages/application/src/__tests__/demand-assignment.test.ts
+++ b/packages/application/src/__tests__/demand-assignment.test.ts
@@ -270,6 +270,7 @@ describe("demand and assignment use-cases", () => {
 
     const db = {
       demandRequirement: { findUnique: demandRequirementFindUnique },
+      assignment: { findMany: assignmentFindMany },
       resource: { findUnique: resourceFindUnique },
       $transaction: vi.fn(async (callback) =>
         callback({
@@ -437,6 +438,7 @@ describe("demand and assignment use-cases", () => {
 
     const db = {
       demandRequirement: { findUnique: demandRequirementFindUnique },
+      assignment: { findMany: assignmentFindMany },
       resource: { findUnique: resourceFindUnique },
       $transaction: vi.fn(async (callback) =>
         callback({
@@ -555,6 +557,7 @@ describe("demand and assignment use-cases", () => {
 
     const db = {
       demandRequirement: { findUnique: demandRequirementFindUnique },
+      assignment: { findMany: assignmentFindMany },
       $transaction: vi.fn(async (callback) =>
         callback({
           project: { findUnique: projectFindUnique },
@@ -685,7 +688,7 @@ describe("demand and assignment use-cases", () => {
 
     const db = {
       demandRequirement: { findUnique: demandRequirementFindUnique },
-      assignment: { findUnique: assignmentFindUnique },
+      assignment: { findUnique: assignmentFindUnique, findMany: assignmentFindMany },
       resource: { findUnique: resourceFindUnique },
       $transaction: vi.fn(async (callback) =>
         callback({
@@ -805,7 +808,7 @@ describe("demand and assignment use-cases", () => {
         findMany: allocationFindMany,
       },
       demandRequirement: { findUnique: demandRequirementFindUnique },
-      assignment: { findUnique: assignmentFindUnique },
+      assignment: { findUnique: assignmentFindUnique, findMany: assignmentFindMany },
       resource: { findUnique: resourceFindUnique },
       $transaction: vi.fn(async (callback) =>
         callback({
@@ -966,7 +969,7 @@ describe("demand and assignment use-cases", () => {
         findMany: allocationFindMany,
       },
       demandRequirement: { findUnique: demandRequirementFindUnique },
-      assignment: { findUnique: assignmentFindUnique },
+      assignment: { findUnique: assignmentFindUnique, findMany: assignmentFindMany },
       resource: { findUnique: resourceFindUnique },
       $transaction: vi.fn(async (callback) =>
         callback({
@@ -1102,7 +1105,7 @@ describe("demand and assignment use-cases", () => {
       demandRequirement: {
         findUnique: demandRequirementFindUnique,
       },
-      assignment: { findUnique: assignmentFindUnique },
+      assignment: { findUnique: assignmentFindUnique, findMany: assignmentFindMany },
       auditLog: { create: auditLogCreate },
       $transaction: vi.fn(async (callback) =>
         callback({
@@ -1227,7 +1230,7 @@ describe("demand and assignment use-cases", () => {
       demandRequirement: {
         findUnique: demandRequirementFindUnique,
       },
-      assignment: { findUnique: assignmentFindUnique },
+      assignment: { findUnique: assignmentFindUnique, findMany: assignmentFindMany },
       auditLog: { create: auditLogCreate },
       $transaction: vi.fn(async (callback) =>
         callback({
diff --git a/packages/application/src/index.ts b/packages/application/src/index.ts
index faafd81..5457969 100644
--- a/packages/application/src/index.ts
+++ b/packages/application/src/index.ts
@@ -80,8 +80,16 @@ export {
   type GetDashboardTopValueResourcesInput,
   type GetDashboardDemandInput,
   type GetDashboardChargeabilityOverviewInput,
+  type DashboardChargeabilityDerivation,
+  type DashboardChargeabilityRow,
   getDashboardBudgetForecast,
   type BudgetForecastRow,
+  type BudgetForecastLocationSummary,
+  type PeakTimesPeriodDerivation,
+  type PeakTimesPeriodRow,
+  type DemandCalendarLocationSummary,
+  type DemandRowDerivation,
+  type DashboardDemandRow,
   getDashboardSkillGaps,
   type SkillGapRow,
   getDashboardProjectHealth,
diff --git a/packages/application/src/use-cases/dashboard/get-budget-forecast.ts b/packages/application/src/use-cases/dashboard/get-budget-forecast.ts
index 2a5f2c2..0a83ff2 100644
--- a/packages/application/src/use-cases/dashboard/get-budget-forecast.ts
+++ b/packages/application/src/use-cases/dashboard/get-budget-forecast.ts
@@ -1,16 +1,57 @@
 import type { PrismaClient } from "@capakraken/db";
+import type { WeekdayAvailability } from "@capakraken/shared";
 import { calculateInclusiveDays, MILLISECONDS_PER_DAY } from "./shared.js";
+import {
+  calculateEffectiveAllocationCostCents,
+  loadDailyAvailabilityContexts,
+} from "./holiday-capacity.js";
+
+export interface BudgetForecastLocationSummary {
+  countryCode: string | null;
+  countryName: string | null;
+  federalState: string | null;
+  metroCityName: string | null;
+  activeAssignmentCount: number;
+  burnRateCents: number;
+}
 
 export interface BudgetForecastRow {
+  projectId?: string;
   projectName: string;
   shortCode: string;
   clientId: string | null;
   clientName: string | null;
   budgetCents: number;
   spentCents: number;
+  remainingCents?: number;
   burnRate: number;
   estimatedExhaustionDate: string | null;
   pctUsed: number;
+  activeAssignmentCount?: number;
+  calendarLocations?: BudgetForecastLocationSummary[];
+}
+
+function hasAvailability<T extends { availability?: unknown }>(
+  resource: T | null | undefined,
+): resource is T & { availability: WeekdayAvailability } {
+  return resource !== null
+    && resource !== undefined
+    && resource.availability !== null
+    && resource.availability !== undefined;
+}
+
+function buildLocationKey(input: {
+  countryCode: string | null | undefined;
+  countryName: string | null | undefined;
+  federalState: string | null | undefined;
+  metroCityName: string | null | undefined;
+}): string {
+  return JSON.stringify({
+    countryCode: input.countryCode ?? null,
+    countryName: input.countryName ?? null,
+    federalState: input.federalState ?? null,
+    metroCityName: input.metroCityName ?? null,
+  });
 }
 
 export async function getDashboardBudgetForecast(
@@ -32,7 +73,7 @@ export async function getDashboardBudgetForecast(
 
   if (projects.length === 0) return [];
 
-  const projectIds = projects.map((p) => p.id);
+  const projectIds = projects.map((project) => project.id);
 
   const assignments = await db.assignment.findMany({
     where: {
@@ -44,42 +85,142 @@ export async function getDashboardBudgetForecast(
       startDate: true,
       endDate: true,
       dailyCostCents: true,
+      resource: {
+        select: {
+          id: true,
+          availability: true,
+          countryId: true,
+          federalState: true,
+          metroCityId: true,
+          country: {
+            select: {
+              code: true,
+              name: true,
+            },
+          },
+          metroCity: {
+            select: {
+              name: true,
+            },
+          },
+        },
+      },
     },
   });
 
   const now = new Date();
+  const monthStart = new Date(now.getFullYear(), now.getMonth(), 1);
+  const monthEnd = new Date(now.getFullYear(), now.getMonth() + 1, 0);
+  const contextStart = assignments.length > 0
+    ? new Date(
+      Math.min(
+        ...assignments.map((assignment) => assignment.startDate.getTime()),
+        monthStart.getTime(),
+      ),
+    )
+    : monthStart;
+  const contextEnd = assignments.length > 0
+    ? new Date(
+      Math.max(
+        ...assignments.map((assignment) => assignment.endDate.getTime()),
+        monthEnd.getTime(),
+      ),
+    )
+    : monthEnd;
+  const contexts = await loadDailyAvailabilityContexts(
+    db,
+    assignments
+      .map((assignment) => assignment.resource)
+      .filter(hasAvailability)
+      .map((resource) => ({
+        id: resource.id,
+        availability: resource.availability as unknown as WeekdayAvailability,
+        countryId: resource.countryId,
+        countryCode: resource.country?.code,
+        federalState: resource.federalState,
+        metroCityId: resource.metroCityId,
+        metroCityName: resource.metroCity?.name,
+      })),
+    contextStart,
+    contextEnd,
+  );
   const spentByProject = new Map<string, number>();
   const monthlyBurnByProject = new Map<string, number>();
+  const activeAssignmentCountByProject = new Map<string, number>();
+  const activeLocationsByProject = new Map<string, Map<string, BudgetForecastLocationSummary>>();
 
-  for (const a of assignments) {
-    const days = calculateInclusiveDays(a.startDate, a.endDate);
-    const totalCost = (a.dailyCostCents ?? 0) * days;
+  for (const assignment of assignments) {
+    const totalCost = hasAvailability(assignment.resource)
+      ? calculateEffectiveAllocationCostCents({
+        availability: assignment.resource.availability as unknown as WeekdayAvailability,
+        startDate: assignment.startDate,
+        endDate: assignment.endDate,
+        dailyCostCents: assignment.dailyCostCents ?? 0,
+        periodStart: assignment.startDate,
+        periodEnd: assignment.endDate,
+        context: contexts.get(assignment.resource.id),
+      })
+      : (assignment.dailyCostCents ?? 0)
+        * calculateInclusiveDays(assignment.startDate, assignment.endDate);
 
     spentByProject.set(
-      a.projectId,
-      (spentByProject.get(a.projectId) ?? 0) + totalCost,
+      assignment.projectId,
+      (spentByProject.get(assignment.projectId) ?? 0) + totalCost,
     );
 
-    // Approximate monthly burn from active assignments that overlap today
-    if (a.startDate <= now && a.endDate >= now) {
-      // ~22 working days per month
-      const monthlyContribution = (a.dailyCostCents ?? 0) * 22;
+    if (assignment.startDate <= now && assignment.endDate >= now) {
+      const monthlyContribution = hasAvailability(assignment.resource)
+        ? calculateEffectiveAllocationCostCents({
+          availability: assignment.resource.availability as unknown as WeekdayAvailability,
+          startDate: assignment.startDate,
+          endDate: assignment.endDate,
+          dailyCostCents: assignment.dailyCostCents ?? 0,
+          periodStart: monthStart,
+          periodEnd: monthEnd,
+          context: contexts.get(assignment.resource.id),
+        })
+        : (assignment.dailyCostCents ?? 0) * 22;
       monthlyBurnByProject.set(
-        a.projectId,
-        (monthlyBurnByProject.get(a.projectId) ?? 0) + monthlyContribution,
+        assignment.projectId,
+        (monthlyBurnByProject.get(assignment.projectId) ?? 0) + monthlyContribution,
       );
+      activeAssignmentCountByProject.set(
+        assignment.projectId,
+        (activeAssignmentCountByProject.get(assignment.projectId) ?? 0) + 1,
+      );
+
+      const locationSummaries = activeLocationsByProject.get(assignment.projectId) ?? new Map();
+      const locationKey = buildLocationKey({
+        countryCode: assignment.resource.country?.code,
+        countryName: assignment.resource.country?.name,
+        federalState: assignment.resource.federalState,
+        metroCityName: assignment.resource.metroCity?.name,
+      });
+      const summary = locationSummaries.get(locationKey) ?? {
+        countryCode: assignment.resource.country?.code ?? null,
+        countryName: assignment.resource.country?.name ?? null,
+        federalState: assignment.resource.federalState ?? null,
+        metroCityName: assignment.resource.metroCity?.name ?? null,
+        activeAssignmentCount: 0,
+        burnRateCents: 0,
+      };
+      summary.activeAssignmentCount += 1;
+      summary.burnRateCents += monthlyContribution;
+      locationSummaries.set(locationKey, summary);
+      activeLocationsByProject.set(assignment.projectId, locationSummaries);
     }
   }
 
-  const rows: BudgetForecastRow[] = projects.map((p) => {
-    const spentCents = spentByProject.get(p.id) ?? 0;
-    const burnRate = monthlyBurnByProject.get(p.id) ?? 0;
-    const pctUsed =
-      p.budgetCents > 0 ? Math.round((spentCents / p.budgetCents) * 100) : 0;
+  const rows: BudgetForecastRow[] = projects.map((project) => {
+    const spentCents = spentByProject.get(project.id) ?? 0;
+    const burnRate = monthlyBurnByProject.get(project.id) ?? 0;
+    const remainingCents = Math.max(0, project.budgetCents - spentCents);
+    const pctUsed = project.budgetCents > 0
+      ? Math.round((spentCents / project.budgetCents) * 100)
+      : 0;
 
     let estimatedExhaustionDate: string | null = null;
-    if (burnRate > 0 && p.budgetCents > spentCents) {
-      const remainingCents = p.budgetCents - spentCents;
+    if (burnRate > 0 && project.budgetCents > spentCents) {
       const monthsRemaining = remainingCents / burnRate;
       const exhaustionDate = new Date(
         now.getTime() + monthsRemaining * 30 * MILLISECONDS_PER_DAY,
@@ -88,18 +229,23 @@ export async function getDashboardBudgetForecast(
     }
 
     return {
-      projectName: p.name,
-      shortCode: p.shortCode,
-      clientId: p.clientId,
-      clientName: p.client?.name ?? null,
-      budgetCents: p.budgetCents,
+      projectId: project.id,
+      projectName: project.name,
+      shortCode: project.shortCode,
+      clientId: project.clientId,
+      clientName: project.client?.name ?? null,
+      budgetCents: project.budgetCents,
       spentCents,
+      remainingCents,
       burnRate,
       estimatedExhaustionDate,
       pctUsed,
+      activeAssignmentCount: activeAssignmentCountByProject.get(project.id) ?? 0,
+      calendarLocations: Array.from(activeLocationsByProject.get(project.id)?.values() ?? [])
+        .sort((left, right) => right.burnRateCents - left.burnRateCents),
     };
   });
 
-  rows.sort((a, b) => b.pctUsed - a.pctUsed);
+  rows.sort((left, right) => right.pctUsed - left.pctUsed);
   return rows;
 }
diff --git a/packages/application/src/use-cases/dashboard/get-chargeability-overview.ts b/packages/application/src/use-cases/dashboard/get-chargeability-overview.ts
index 1139cdc..ea371c3 100644
--- a/packages/application/src/use-cases/dashboard/get-chargeability-overview.ts
+++ b/packages/application/src/use-cases/dashboard/get-chargeability-overview.ts
@@ -1,11 +1,26 @@
 import type { PrismaClient } from "@capakraken/db";
-import { computeChargeability } from "@capakraken/engine";
 import type { WeekdayAvailability } from "@capakraken/shared";
 import {
   isChargeabilityActualBooking,
   isChargeabilityRelevantProject,
 } from "../allocation/chargeability-bookings.js";
 import { listAssignmentBookings } from "../allocation/list-assignment-bookings.js";
+import {
+  calculateEffectiveAllocationHours,
+  calculateEffectiveAvailableHours,
+  loadDailyAvailabilityContexts,
+  type DailyAvailabilityContext,
+} from "./holiday-capacity.js";
+
+const DAY_KEYS: (keyof WeekdayAvailability)[] = [
+  "sunday",
+  "monday",
+  "tuesday",
+  "wednesday",
+  "thursday",
+  "friday",
+  "saturday",
+];
 
 export interface GetDashboardChargeabilityOverviewInput {
   includeProposed?: boolean;
@@ -16,6 +31,132 @@ export interface GetDashboardChargeabilityOverviewInput {
   now?: Date;
 }
 
+export interface DashboardChargeabilityDerivation {
+  weeklyAvailabilityHours: number;
+  baseWorkingDays: number;
+  effectiveWorkingDayEquivalent: number;
+  baseAvailableHours: number;
+  effectiveAvailableHours: number;
+  publicHolidayCount: number;
+  publicHolidayWorkdayCount: number;
+  publicHolidayHoursDeduction: number;
+  absenceDayEquivalent: number;
+  absenceHoursDeduction: number;
+  actualBookedHours: number;
+  expectedBookedHours: number;
+  targetBookedHours: number;
+  unassignedHours: number;
+}
+
+export interface DashboardChargeabilityRow {
+  id: string;
+  eid: string;
+  displayName: string;
+  chapter: string | null;
+  countryId?: string | null;
+  countryCode?: string | null;
+  countryName?: string | null;
+  federalState?: string | null;
+  metroCityName?: string | null;
+  departed: boolean | null;
+  chargeabilityTarget: number;
+  actualChargeability: number;
+  expectedChargeability: number;
+  derivation?: DashboardChargeabilityDerivation;
+}
+
+function toIsoDate(value: Date): string {
+  return value.toISOString().slice(0, 10);
+}
+
+function getDailyAvailabilityHours(
+  availability: WeekdayAvailability,
+  date: Date,
+): number {
+  const dayKey = DAY_KEYS[date.getUTCDay()];
+  return dayKey ? (availability[dayKey] ?? 0) : 0;
+}
+
+function summarizeDerivation(
+  availability: WeekdayAvailability,
+  periodStart: Date,
+  periodEnd: Date,
+  context: DailyAvailabilityContext | undefined,
+  actualBookedHours: number,
+  expectedBookedHours: number,
+  chargeabilityTarget: number,
+): DashboardChargeabilityDerivation {
+  let baseWorkingDays = 0;
+  let effectiveWorkingDayEquivalent = 0;
+  let publicHolidayWorkdayCount = 0;
+  let publicHolidayHoursDeduction = 0;
+  let absenceDayEquivalent = 0;
+  let absenceHoursDeduction = 0;
+
+  const weeklyAvailabilityHours = Object.values(availability).reduce(
+    (sum, hours) => sum + (hours ?? 0),
+    0,
+  );
+  const baseAvailableHours = calculateEffectiveAvailableHours({
+    availability,
+    periodStart,
+    periodEnd,
+    context: undefined,
+  });
+  const effectiveAvailableHours = calculateEffectiveAvailableHours({
+    availability,
+    periodStart,
+    periodEnd,
+    context,
+  });
+
+  const cursor = new Date(periodStart);
+  cursor.setUTCHours(0, 0, 0, 0);
+  const end = new Date(periodEnd);
+  end.setUTCHours(0, 0, 0, 0);
+
+  while (cursor <= end) {
+    const isoDate = toIsoDate(cursor);
+    const baseHours = getDailyAvailabilityHours(availability, cursor);
+    const absenceFraction = Math.min(
+      1,
+      Math.max(0, context?.absenceFractionsByDate.get(isoDate) ?? 0),
+    );
+    const isHoliday = context?.holidayDates.has(isoDate) ?? false;
+
+    if (baseHours > 0) {
+      baseWorkingDays += 1;
+      if (isHoliday) {
+        publicHolidayWorkdayCount += 1;
+        publicHolidayHoursDeduction += baseHours;
+      } else {
+        absenceDayEquivalent += absenceFraction;
+        absenceHoursDeduction += baseHours * absenceFraction;
+        effectiveWorkingDayEquivalent += Math.max(0, 1 - absenceFraction);
+      }
+    }
+
+    cursor.setUTCDate(cursor.getUTCDate() + 1);
+  }
+
+  return {
+    weeklyAvailabilityHours,
+    baseWorkingDays,
+    effectiveWorkingDayEquivalent,
+    baseAvailableHours,
+    effectiveAvailableHours,
+    publicHolidayCount: context?.holidayDates.size ?? 0,
+    publicHolidayWorkdayCount,
+    publicHolidayHoursDeduction,
+    absenceDayEquivalent,
+    absenceHoursDeduction,
+    actualBookedHours,
+    expectedBookedHours,
+    targetBookedHours: Math.round((effectiveAvailableHours * chargeabilityTarget) / 10) / 10,
+    unassignedHours: Math.max(0, effectiveAvailableHours - expectedBookedHours),
+  };
+}
+
 export async function getDashboardChargeabilityOverview(
   db: PrismaClient,
   input: GetDashboardChargeabilityOverviewInput,
@@ -38,8 +179,23 @@ export async function getDashboardChargeabilityOverview(
       displayName: true,
       chapter: true,
       countryId: true,
+      federalState: true,
+      metroCityId: true,
       departed: true,
       chargeabilityTarget: true,
+      country: {
+        select: {
+          id: true,
+          code: true,
+          name: true,
+        },
+      },
+      metroCity: {
+        select: {
+          id: true,
+          name: true,
+        },
+      },
       availability: true,
     },
   });
@@ -48,9 +204,24 @@ export async function getDashboardChargeabilityOverview(
     endDate: end,
     resourceIds: resources.map((resource) => resource.id),
   });
+  const contexts = await loadDailyAvailabilityContexts(
+    db,
+    resources.map((resource) => ({
+      id: resource.id,
+      availability: resource.availability as unknown as WeekdayAvailability,
+      countryId: resource.countryId,
+      countryCode: resource.country?.code,
+      federalState: resource.federalState,
+      metroCityId: resource.metroCityId,
+      metroCityName: resource.metroCity?.name,
+    })),
+    start,
+    end,
+  );
 
-  const stats = resources.map((resource) => {
+  const stats: DashboardChargeabilityRow[] = resources.map((resource) => {
     const availability = resource.availability as unknown as WeekdayAvailability;
+    const context = contexts.get(resource.id);
     const resourceBookings = bookings.filter((booking) => booking.resourceId === resource.id);
     const actualAllocations = resourceBookings.filter((booking) =>
       isChargeabilityActualBooking(booking, input.includeProposed === true),
@@ -58,18 +229,43 @@ export async function getDashboardChargeabilityOverview(
     const expectedAllocations = resourceBookings.filter(
       (booking) => isChargeabilityRelevantProject(booking.project, true),
     );
-    const actual = computeChargeability(
+    const availableHours = calculateEffectiveAvailableHours({
       availability,
-      actualAllocations,
-      start,
-      end,
+      periodStart: start,
+      periodEnd: end,
+      context,
+    });
+    const actualBookedHours = actualAllocations.reduce(
+      (sum, allocation) => sum + calculateEffectiveAllocationHours({
+        availability,
+        startDate: allocation.startDate,
+        endDate: allocation.endDate,
+        hoursPerDay: allocation.hoursPerDay,
+        periodStart: start,
+        periodEnd: end,
+        context,
+      }),
+      0,
     );
-    const expected = computeChargeability(
-      availability,
-      expectedAllocations,
-      start,
-      end,
+    const expectedBookedHours = expectedAllocations.reduce(
+      (sum, allocation) => sum + calculateEffectiveAllocationHours({
+        availability,
+        startDate: allocation.startDate,
+        endDate: allocation.endDate,
+        hoursPerDay: allocation.hoursPerDay,
+        periodStart: start,
+        periodEnd: end,
+        context,
+      }),
+      0,
     );
+    const actualChargeability = availableHours > 0
+      ? Math.min(100, Math.round((actualBookedHours / availableHours) * 100))
+      : 0;
+    const expectedChargeability = availableHours > 0
+      ? Math.min(100, Math.round((expectedBookedHours / availableHours) * 100))
+      : 0;
+    const chargeabilityTarget = resource.chargeabilityTarget ?? 0;
 
     return {
       id: resource.id,
@@ -77,10 +273,23 @@ export async function getDashboardChargeabilityOverview(
       displayName: resource.displayName,
       chapter: resource.chapter,
       countryId: resource.countryId,
+      countryCode: resource.country?.code ?? null,
+      countryName: resource.country?.name ?? null,
+      federalState: resource.federalState ?? null,
+      metroCityName: resource.metroCity?.name ?? null,
       departed: resource.departed,
-      chargeabilityTarget: resource.chargeabilityTarget,
-      actualChargeability: actual.chargeability,
-      expectedChargeability: expected.chargeability,
+      chargeabilityTarget,
+      actualChargeability,
+      expectedChargeability,
+      derivation: summarizeDerivation(
+        availability,
+        start,
+        end,
+        context,
+        actualBookedHours,
+        expectedBookedHours,
+        chargeabilityTarget,
+      ),
     };
   });
 
diff --git a/packages/application/src/use-cases/dashboard/get-demand.ts b/packages/application/src/use-cases/dashboard/get-demand.ts
index d433d89..08e1dd1 100644
--- a/packages/application/src/use-cases/dashboard/get-demand.ts
+++ b/packages/application/src/use-cases/dashboard/get-demand.ts
@@ -1,6 +1,12 @@
 import type { PrismaClient } from "@capakraken/db";
+import type { WeekdayAvailability } from "@capakraken/shared";
 import { loadDashboardPlanningReadModel } from "./load-dashboard-planning-read-model.js";
 import { calculateAllocationHours } from "./shared.js";
+import {
+  calculateEffectiveAllocationHours,
+  calculateEffectiveAvailableHours,
+  loadDailyAvailabilityContexts,
+} from "./holiday-capacity.js";
 
 export interface GetDashboardDemandInput {
   startDate: Date;
@@ -8,6 +14,35 @@ export interface GetDashboardDemandInput {
   groupBy: "project" | "person" | "chapter";
 }
 
+export interface DemandCalendarLocationSummary {
+  countryCode: string | null;
+  federalState: string | null;
+  metroCityName: string | null;
+  resourceCount: number;
+  allocatedHours: number;
+}
+
+export interface DemandRowDerivation {
+  periodStart: string;
+  periodEnd: string;
+  periodWorkingHoursBase: number;
+  requiredHours: number | null;
+  requiredFTEs: number;
+  fillPct: number | null;
+  demandSource: "DEMAND_REQUIREMENTS" | "PROJECT_STAFFING_REQS" | "NONE";
+  calendarLocations: DemandCalendarLocationSummary[];
+}
+
+export interface DashboardDemandRow {
+  id: string;
+  name: string;
+  shortCode: string;
+  allocatedHours: number;
+  requiredFTEs: number;
+  resourceCount: number;
+  derivation?: DemandRowDerivation;
+}
+
 interface ProjectSummary {
   id: string;
   name: string;
@@ -15,6 +50,12 @@ interface ProjectSummary {
   staffingReqs: unknown;
 }
 
+function hasAvailability<T extends { availability?: unknown }>(
+  resource: T | null | undefined,
+): resource is T & { availability: WeekdayAvailability } {
+  return resource !== null && resource !== undefined && resource.availability !== null && resource.availability !== undefined;
+}
+
 function getDemandFteFactor(hoursPerDay: number, percentage: number): number {
   const normalizedPercentage = percentage > 0 ? percentage : (hoursPerDay / 8) * 100;
   return normalizedPercentage / 100;
@@ -24,6 +65,22 @@ function toDate(value: Date | string): Date {
   return value instanceof Date ? value : new Date(value);
 }
 
+function toIsoDate(value: Date): string {
+  return value.toISOString().slice(0, 10);
+}
+
+function buildLocationKey(input: {
+  countryCode: string | null | undefined;
+  federalState: string | null | undefined;
+  metroCityName: string | null | undefined;
+}): string {
+  return JSON.stringify({
+    countryCode: input.countryCode ?? null,
+    federalState: input.federalState ?? null,
+    metroCityName: input.metroCityName ?? null,
+  });
+}
+
 function getProjectRequiredFTEs(staffingReqs: unknown): number {
   const requirements = Array.isArray(staffingReqs) ? staffingReqs : [];
   return requirements.reduce((sum, requirement) => {
@@ -40,10 +97,84 @@ function getProjectRequiredFTEs(staffingReqs: unknown): number {
   }, 0);
 }
 
+const FULL_TIME_AVAILABILITY: WeekdayAvailability = {
+  sunday: 0,
+  monday: 8,
+  tuesday: 8,
+  wednesday: 8,
+  thursday: 8,
+  friday: 8,
+  saturday: 0,
+};
+
+function summarizeCalendarLocations(
+  assignments: Array<{
+    resource?: { id?: string | null } | null;
+    startDate: Date | string;
+    endDate: Date | string;
+    hoursPerDay: number;
+  }>,
+  resourceInfoById: Map<string, {
+    id: string;
+    availability: WeekdayAvailability;
+    countryCode: string | null | undefined;
+    federalState: string | null | undefined;
+    metroCityName: string | null | undefined;
+  }>,
+  contexts: Map<string, Awaited<ReturnType<typeof loadDailyAvailabilityContexts>> extends Map<string, infer T> ? T : never>,
+  input: GetDashboardDemandInput,
+): DemandCalendarLocationSummary[] {
+  const locationMap = new Map<string, DemandCalendarLocationSummary & { resourceIds: Set<string> }>();
+
+  for (const assignment of assignments) {
+    const resourceId = assignment.resource?.id ?? undefined;
+    const resource = resourceId ? resourceInfoById.get(resourceId) : undefined;
+    if (!resource) {
+      continue;
+    }
+
+    const hours = calculateEffectiveAllocationHours({
+      availability: resource.availability,
+      startDate: toDate(assignment.startDate),
+      endDate: toDate(assignment.endDate),
+      hoursPerDay: assignment.hoursPerDay,
+      periodStart: input.startDate,
+      periodEnd: input.endDate,
+      context: contexts.get(resource.id),
+    });
+
+    const locationKey = buildLocationKey({
+      countryCode: resource.countryCode,
+      federalState: resource.federalState,
+      metroCityName: resource.metroCityName,
+    });
+    const existing = locationMap.get(locationKey) ?? {
+      countryCode: resource.countryCode ?? null,
+      federalState: resource.federalState ?? null,
+      metroCityName: resource.metroCityName ?? null,
+      resourceCount: 0,
+      allocatedHours: 0,
+      resourceIds: new Set<string>(),
+    };
+
+    existing.allocatedHours += hours;
+    existing.resourceIds.add(resource.id);
+    existing.resourceCount = existing.resourceIds.size;
+    locationMap.set(locationKey, existing);
+  }
+
+  return [...locationMap.values()]
+    .map(({ resourceIds: _resourceIds, ...summary }) => ({
+      ...summary,
+      allocatedHours: Math.round(summary.allocatedHours * 10) / 10,
+    }))
+    .sort((left, right) => right.allocatedHours - left.allocatedHours);
+}
+
 export async function getDashboardDemand(
   db: PrismaClient,
   input: GetDashboardDemandInput,
-) {
+): Promise<DashboardDemandRow[]> {
   const { demandRequirements, assignments, projects, readModel } =
     await loadDashboardPlanningReadModel(db, {
       startDate: input.startDate,
@@ -58,6 +189,27 @@ export async function getDashboardDemand(
   );
   const normalizedAssignments = readModel.assignments;
   const normalizedDemands = readModel.demands;
+  const resourceProfiles = assignments
+    .map((assignment) => assignment.resource)
+    .filter(hasAvailability)
+    .map((resource) => ({
+      id: resource.id,
+      availability: resource.availability as unknown as WeekdayAvailability,
+      countryId: resource.countryId,
+      countryCode: resource.country?.code,
+      federalState: resource.federalState,
+      metroCityId: resource.metroCityId,
+      metroCityName: resource.metroCity?.name,
+    }));
+  const resourceInfoById = new Map(
+    resourceProfiles.map((resource) => [resource.id, resource]),
+  );
+  const contexts = await loadDailyAvailabilityContexts(
+    db,
+    [...new Map(resourceProfiles.map((resource) => [resource.id, resource])).values()],
+    input.startDate,
+    input.endDate,
+  );
 
   const projectMap = new Map<string, ProjectSummary>(
     projects.map((project) => [project.id, project]),
@@ -87,6 +239,13 @@ export async function getDashboardDemand(
     );
   }
 
+  const periodWorkingHoursBase = calculateEffectiveAvailableHours({
+    availability: FULL_TIME_AVAILABILITY,
+    periodStart: input.startDate,
+    periodEnd: input.endDate,
+    context: undefined,
+  });
+
   if (input.groupBy === "project") {
     const projectIds = new Set<string>([
       ...projectMap.keys(),
@@ -110,13 +269,28 @@ export async function getDashboardDemand(
       );
 
       const allocatedHours = projectAssignments.reduce(
-        (sum, assignment) =>
-          sum +
-          calculateAllocationHours({
-            startDate: toDate(assignment.startDate),
-            endDate: toDate(assignment.endDate),
-            hoursPerDay: assignment.hoursPerDay,
-          }),
+        (sum, assignment) => {
+          const resource = assignment.resource?.id
+            ? resourceInfoById.get(assignment.resource.id)
+            : undefined;
+          return sum + (
+            resource
+              ? calculateEffectiveAllocationHours({
+                availability: resource.availability,
+                startDate: toDate(assignment.startDate),
+                endDate: toDate(assignment.endDate),
+                hoursPerDay: assignment.hoursPerDay,
+                periodStart: input.startDate,
+                periodEnd: input.endDate,
+                context: contexts.get(resource.id),
+              })
+              : calculateAllocationHours({
+                startDate: toDate(assignment.startDate),
+                endDate: toDate(assignment.endDate),
+                hoursPerDay: assignment.hoursPerDay,
+              })
+          );
+        },
         0,
       );
       const requiredFTEs =
@@ -139,6 +313,18 @@ export async function getDashboardDemand(
               return sum + plannedHeadcount * demandFteFactor;
             }, 0)
           : getProjectRequiredFTEs(project.staffingReqs);
+      const requiredHours = requiredFTEs > 0
+        ? Math.round(requiredFTEs * periodWorkingHoursBase * 10) / 10
+        : null;
+      const fillPct = requiredHours && requiredHours > 0
+        ? Math.round((allocatedHours / requiredHours) * 100)
+        : null;
+      const calendarLocations = summarizeCalendarLocations(
+        projectAssignments,
+        resourceInfoById,
+        contexts,
+        input,
+      );
 
       return {
         id: project.id,
@@ -149,6 +335,18 @@ export async function getDashboardDemand(
         resourceCount: new Set(
           projectAssignments.map((assignment) => assignment.resource?.id).filter(Boolean),
         ).size,
+        derivation: {
+          periodStart: toIsoDate(input.startDate),
+          periodEnd: toIsoDate(input.endDate),
+          periodWorkingHoursBase,
+          requiredHours,
+          requiredFTEs: Math.round(requiredFTEs * 100) / 100,
+          fillPct,
+          demandSource: projectDemands.length > 0
+            ? "DEMAND_REQUIREMENTS"
+            : "PROJECT_STAFFING_REQS",
+          calendarLocations,
+        },
       };
     });
   }
@@ -161,6 +359,9 @@ export async function getDashboardDemand(
 
     for (const assignment of normalizedAssignments) {
       const chapter = assignment.resource?.chapter ?? "Unassigned";
+      const resource = assignment.resource?.id
+        ? resourceInfoById.get(assignment.resource.id)
+        : undefined;
       const existing = chapterMap.get(chapter) ?? {
         allocatedHours: 0,
         resourceIds: new Set<string>(),
@@ -170,23 +371,54 @@ export async function getDashboardDemand(
         existing.resourceIds.add(assignment.resource.id);
       }
 
-      existing.allocatedHours += calculateAllocationHours({
-        startDate: toDate(assignment.startDate),
-        endDate: toDate(assignment.endDate),
-        hoursPerDay: assignment.hoursPerDay,
-      });
+      existing.allocatedHours += resource
+        ? calculateEffectiveAllocationHours({
+          availability: resource.availability,
+          startDate: toDate(assignment.startDate),
+          endDate: toDate(assignment.endDate),
+          hoursPerDay: assignment.hoursPerDay,
+          periodStart: input.startDate,
+          periodEnd: input.endDate,
+          context: contexts.get(resource.id),
+        })
+        : calculateAllocationHours({
+          startDate: toDate(assignment.startDate),
+          endDate: toDate(assignment.endDate),
+          hoursPerDay: assignment.hoursPerDay,
+        });
 
       chapterMap.set(chapter, existing);
     }
 
-    return [...chapterMap.entries()].map(([chapter, data]) => ({
-      id: chapter,
-      name: chapter,
-      shortCode: chapter,
-      allocatedHours: Math.round(data.allocatedHours),
-      requiredFTEs: 0,
-      resourceCount: data.resourceIds.size,
-    }));
+    return [...chapterMap.entries()].map(([chapter, data]) => {
+      const chapterAssignments = normalizedAssignments.filter(
+        (assignment) => (assignment.resource?.chapter ?? "Unassigned") === chapter,
+      );
+
+      return {
+        id: chapter,
+        name: chapter,
+        shortCode: chapter,
+        allocatedHours: Math.round(data.allocatedHours),
+        requiredFTEs: 0,
+        resourceCount: data.resourceIds.size,
+        derivation: {
+          periodStart: toIsoDate(input.startDate),
+          periodEnd: toIsoDate(input.endDate),
+          periodWorkingHoursBase,
+          requiredHours: null,
+          requiredFTEs: 0,
+          fillPct: null,
+          demandSource: "NONE",
+          calendarLocations: summarizeCalendarLocations(
+            chapterAssignments,
+            resourceInfoById,
+            contexts,
+            input,
+          ),
+        },
+      };
+    });
   }
 
   const personMap = new Map<
@@ -210,23 +442,55 @@ export async function getDashboardDemand(
       allocatedHours: 0,
       projectIds: new Set<string>(),
     };
+    const resource = resourceInfoById.get(assignment.resource.id);
 
-    existing.allocatedHours += calculateAllocationHours({
-      startDate: toDate(assignment.startDate),
-      endDate: toDate(assignment.endDate),
-      hoursPerDay: assignment.hoursPerDay,
-    });
+    existing.allocatedHours += resource
+      ? calculateEffectiveAllocationHours({
+        availability: resource.availability,
+        startDate: toDate(assignment.startDate),
+        endDate: toDate(assignment.endDate),
+        hoursPerDay: assignment.hoursPerDay,
+        periodStart: input.startDate,
+        periodEnd: input.endDate,
+        context: contexts.get(resource.id),
+      })
+      : calculateAllocationHours({
+        startDate: toDate(assignment.startDate),
+        endDate: toDate(assignment.endDate),
+        hoursPerDay: assignment.hoursPerDay,
+      });
     existing.projectIds.add(assignment.projectId);
 
     personMap.set(assignment.resource.id, existing);
   }
 
-  return [...personMap.entries()].map(([id, data]) => ({
-    id,
-    name: data.name,
-    shortCode: data.chapter ?? "",
-    allocatedHours: Math.round(data.allocatedHours),
-    requiredFTEs: 0,
-    resourceCount: data.projectIds.size,
-  }));
+  return [...personMap.entries()].map(([id, data]) => {
+    const personAssignments = normalizedAssignments.filter(
+      (assignment) => assignment.resource?.id === id,
+    );
+
+    return {
+      id,
+      name: data.name,
+      shortCode: data.chapter ?? "",
+      allocatedHours: Math.round(data.allocatedHours),
+      requiredFTEs: 0,
+      resourceCount: data.projectIds.size,
+      derivation: {
+        periodStart: toIsoDate(input.startDate),
+        periodEnd: toIsoDate(input.endDate),
+        periodWorkingHoursBase,
+        requiredHours: null,
+        requiredFTEs: 0,
+        fillPct: null,
+        demandSource: "NONE",
+        calendarLocations: summarizeCalendarLocations(
+          personAssignments,
+          resourceInfoById,
+          contexts,
+          input,
+        ),
+      },
+    };
+  });
 }
diff --git a/packages/application/src/use-cases/dashboard/get-overview.ts b/packages/application/src/use-cases/dashboard/get-overview.ts
index d2f0fa3..7c5ac51 100644
--- a/packages/application/src/use-cases/dashboard/get-overview.ts
+++ b/packages/application/src/use-cases/dashboard/get-overview.ts
@@ -1,8 +1,18 @@
 import type { PrismaClient } from "@capakraken/db";
 import { AllocationStatus } from "@capakraken/shared";
 import { buildSplitAllocationReadModel } from "../allocation/build-split-allocation-read-model.js";
-import { listAssignmentBookings } from "../allocation/list-assignment-bookings.js";
 import { calculateInclusiveDays } from "./shared.js";
+import type { WeekdayAvailability } from "@capakraken/shared";
+import {
+  calculateEffectiveAllocationCostCents,
+  loadDailyAvailabilityContexts,
+} from "./holiday-capacity.js";
+
+function hasAvailability<T extends { availability?: unknown }>(
+  resource: T | null | undefined,
+): resource is T & { availability: WeekdayAvailability } {
+  return resource !== null && resource !== undefined && resource.availability !== null && resource.availability !== undefined;
+}
 
 export async function getDashboardOverview(db: PrismaClient) {
   const [
@@ -12,7 +22,7 @@ export async function getDashboardOverview(db: PrismaClient) {
     allProjects,
     allDemandRequirements,
     allAssignments,
-    budgetBookings,
+    budgetAssignments,
     recentActivity,
     allResources,
   ] = await Promise.all([
@@ -58,7 +68,25 @@ export async function getDashboardOverview(db: PrismaClient) {
         updatedAt: true,
       },
     }),
-    listAssignmentBookings(db, {}),
+    db.assignment.findMany({
+      where: { status: { not: "CANCELLED" } },
+      select: {
+        startDate: true,
+        endDate: true,
+        dailyCostCents: true,
+        resource: {
+          select: {
+            id: true,
+            availability: true,
+            countryId: true,
+            federalState: true,
+            metroCityId: true,
+            country: { select: { code: true } },
+            metroCity: { select: { name: true } },
+          },
+        },
+      },
+    }),
     db.auditLog.findMany({
       orderBy: { createdAt: "desc" },
       take: 10,
@@ -77,12 +105,46 @@ export async function getDashboardOverview(db: PrismaClient) {
   const activeAllocations = planningReadModel.allocations.filter(
     (allocation) => allocation.status !== AllocationStatus.CANCELLED,
   ).length;
+  const contextStart = budgetAssignments.length > 0
+    ? new Date(Math.min(...budgetAssignments.map((assignment) => assignment.startDate.getTime())))
+    : new Date();
+  const contextEnd = budgetAssignments.length > 0
+    ? new Date(Math.max(...budgetAssignments.map((assignment) => assignment.endDate.getTime())))
+    : new Date();
+  const contexts = await loadDailyAvailabilityContexts(
+    db,
+    budgetAssignments
+      .map((assignment) => assignment.resource)
+      .filter(hasAvailability)
+      .map((resource) => ({
+        id: resource.id,
+        availability: resource.availability as unknown as WeekdayAvailability,
+        countryId: resource.countryId,
+        countryCode: resource.country?.code,
+        federalState: resource.federalState,
+        metroCityId: resource.metroCityId,
+        metroCityName: resource.metroCity?.name,
+      })),
+    contextStart,
+    contextEnd,
+  );
 
-  const totalCostCents = budgetBookings.reduce(
-    (sum, booking) =>
-      sum +
-      (booking.dailyCostCents ?? 0) *
-        calculateInclusiveDays(booking.startDate, booking.endDate),
+  const totalCostCents = budgetAssignments.reduce(
+    (sum, assignment) =>
+      sum + (
+        hasAvailability(assignment.resource)
+          ? calculateEffectiveAllocationCostCents({
+            availability: assignment.resource.availability as unknown as WeekdayAvailability,
+            startDate: assignment.startDate,
+            endDate: assignment.endDate,
+            dailyCostCents: assignment.dailyCostCents ?? 0,
+            periodStart: assignment.startDate,
+            periodEnd: assignment.endDate,
+            context: contexts.get(assignment.resource.id),
+          })
+          : (assignment.dailyCostCents ?? 0) *
+            calculateInclusiveDays(assignment.startDate, assignment.endDate)
+      ),
     0,
   );
 
@@ -90,6 +152,12 @@ export async function getDashboardOverview(db: PrismaClient) {
     (sum, project) => sum + (project.budgetCents ?? 0),
     0,
   );
+  const activeProjectCount = allProjects.filter((project) => project.status === "ACTIVE").length;
+  const inactiveResourceCount = Math.max(totalResources - activeResources, 0);
+  const inactiveProjectCount = Math.max(totalProjects - activeProjectCount, 0);
+  const cancelledAllocations = Math.max(totalAllocations - activeAllocations, 0);
+  const budgetedProjects = allProjects.filter((project) => (project.budgetCents ?? 0) > 0).length;
+  const remainingBudgetCents = totalBudgetCents - totalCostCents;
 
   const avgUtilizationPercent =
     totalBudgetCents > 0
@@ -125,16 +193,26 @@ export async function getDashboardOverview(db: PrismaClient) {
   return {
     totalResources,
     activeResources,
+    inactiveResources: inactiveResourceCount,
     totalProjects,
-    activeProjects: allProjects.filter((project) => project.status === "ACTIVE")
-      .length,
+    activeProjects: activeProjectCount,
+    inactiveProjects: inactiveProjectCount,
     totalAllocations,
     activeAllocations,
+    cancelledAllocations,
     budgetSummary: {
       totalBudgetCents,
       totalCostCents,
       avgUtilizationPercent,
     },
+    budgetBasis: {
+      remainingBudgetCents,
+      budgetedProjects,
+      unbudgetedProjects: Math.max(totalProjects - budgetedProjects, 0),
+      trackedAssignmentCount: budgetAssignments.length,
+      windowStart: budgetAssignments.length > 0 ? contextStart : null,
+      windowEnd: budgetAssignments.length > 0 ? contextEnd : null,
+    },
     recentActivity: recentActivity.map((activity) => ({
       id: activity.id,
       entityType: activity.entityType,
diff --git a/packages/application/src/use-cases/dashboard/get-peak-times.ts b/packages/application/src/use-cases/dashboard/get-peak-times.ts
index f0a0a0c..c836da0 100644
--- a/packages/application/src/use-cases/dashboard/get-peak-times.ts
+++ b/packages/application/src/use-cases/dashboard/get-peak-times.ts
@@ -1,6 +1,13 @@
 import type { PrismaClient } from "@capakraken/db";
+import type { WeekdayAvailability } from "@capakraken/shared";
 import { listAssignmentBookings } from "../allocation/list-assignment-bookings.js";
-import { getAverageDailyAvailabilityHours, getMonthBucketKey, getWeekBucketKey } from "./shared.js";
+import { getMonthBucketKey, getWeekBucketKey } from "./shared.js";
+import {
+  calculateEffectiveAllocationHours,
+  calculateEffectiveAvailableHours,
+  enumerateIsoDates,
+  loadDailyAvailabilityContexts,
+} from "./holiday-capacity.js";
 
 export interface GetDashboardPeakTimesInput {
   startDate: Date;
@@ -9,67 +16,253 @@ export interface GetDashboardPeakTimesInput {
   groupBy: "project" | "chapter" | "resource";
 }
 
+export interface PeakTimesPeriodDerivation {
+  periodStart: string;
+  periodEnd: string;
+  resourceCount: number;
+  groupCount: number;
+  bookedHours: number;
+  capacityHours: number;
+  remainingCapacityHours: number;
+  overbookedHours: number;
+  utilizationPct: number;
+}
+
+export interface PeakTimesGroupRow {
+  name: string;
+  hours: number;
+  capacityHours: number | undefined;
+  remainingHours: number | undefined;
+  overbookedHours: number | undefined;
+  utilizationPct: number | undefined;
+}
+
+export interface PeakTimesPeriodRow {
+  period: string;
+  groups: PeakTimesGroupRow[];
+  totalHours: number;
+  capacityHours: number;
+  periodStart?: string;
+  periodEnd?: string;
+  bookedHours?: number;
+  remainingHours?: number;
+  overbookedHours?: number;
+  utilizationPct?: number;
+  groupCount?: number;
+  resourceCount?: number;
+  derivation: PeakTimesPeriodDerivation;
+}
+
 export async function getDashboardPeakTimes(
   db: PrismaClient,
   input: GetDashboardPeakTimesInput,
-) {
-  const allocations = await listAssignmentBookings(db, {
-    startDate: input.startDate,
-    endDate: input.endDate,
-  });
+): Promise<PeakTimesPeriodRow[]> {
+  const [allocations, resources] = await Promise.all([
+    listAssignmentBookings(db, {
+      startDate: input.startDate,
+      endDate: input.endDate,
+    }),
+    db.resource.findMany({
+      where: { isActive: true },
+      select: {
+        id: true,
+        displayName: true,
+        chapter: true,
+        availability: true,
+        countryId: true,
+        federalState: true,
+        metroCityId: true,
+        country: {
+          select: {
+            code: true,
+          },
+        },
+        metroCity: {
+          select: {
+            name: true,
+          },
+        },
+      },
+    }),
+  ]);
 
   const buckets = new Map<string, Map<string, number>>();
-
+  const groupCapacityBuckets = new Map<string, Map<string, number>>();
   const getBucketKey = input.granularity === "week" ? getWeekBucketKey : getMonthBucketKey;
+  const resourceMap = new Map(
+    resources.map((resource) => [
+      resource.id,
+      {
+        ...resource,
+        availability: resource.availability as unknown as WeekdayAvailability,
+      },
+    ]),
+  );
+  const contexts = await loadDailyAvailabilityContexts(
+    db,
+    resources.map((resource) => ({
+      id: resource.id,
+      availability: resource.availability as unknown as WeekdayAvailability,
+      countryId: resource.countryId,
+      countryCode: resource.country?.code,
+      federalState: resource.federalState,
+      metroCityId: resource.metroCityId,
+      metroCityName: resource.metroCity?.name,
+    })),
+    input.startDate,
+    input.endDate,
+  );
+  const bucketPeriods = new Map<string, { start: Date; end: Date }>();
+
+  for (const isoDate of enumerateIsoDates(input.startDate, input.endDate)) {
+    const date = new Date(`${isoDate}T00:00:00.000Z`);
+    const bucketKey = getBucketKey(date);
+    const existing = bucketPeriods.get(bucketKey);
+    if (!existing) {
+      bucketPeriods.set(bucketKey, { start: date, end: date });
+      continue;
+    }
+    if (date < existing.start) {
+      existing.start = date;
+    }
+    if (date > existing.end) {
+      existing.end = date;
+    }
+  }
+  for (const bucketKey of bucketPeriods.keys()) {
+    buckets.set(bucketKey, new Map());
+    groupCapacityBuckets.set(bucketKey, new Map());
+  }
 
   for (const allocation of allocations) {
-    const allocStart = new Date(
-      Math.max(allocation.startDate.getTime(), input.startDate.getTime()),
-    );
-    const allocEnd = new Date(
-      Math.min(allocation.endDate.getTime(), input.endDate.getTime()),
-    );
+    const resource = allocation.resourceId ? resourceMap.get(allocation.resourceId) : undefined;
     const group =
       input.groupBy === "project"
         ? allocation.project.shortCode
         : input.groupBy === "chapter"
           ? allocation.resource?.chapter ?? "Unassigned"
           : allocation.resource?.displayName ?? "Unknown";
-
-    const cursor = new Date(allocStart);
-    while (cursor <= allocEnd) {
-      const bucketKey = getBucketKey(cursor);
-      if (!buckets.has(bucketKey)) {
-        buckets.set(bucketKey, new Map());
+    for (const [bucketKey, bucketPeriod] of bucketPeriods.entries()) {
+      const hours = resource
+        ? calculateEffectiveAllocationHours({
+          availability: resource.availability,
+          startDate: allocation.startDate,
+          endDate: allocation.endDate,
+          hoursPerDay: allocation.hoursPerDay,
+          periodStart: bucketPeriod.start,
+          periodEnd: bucketPeriod.end,
+          context: contexts.get(resource.id),
+        })
+        : 0;
+      if (hours <= 0) {
+        continue;
       }
-
       const bucket = buckets.get(bucketKey)!;
-      bucket.set(group, (bucket.get(group) ?? 0) + allocation.hoursPerDay);
-      cursor.setDate(cursor.getDate() + 1);
+      bucket.set(group, (bucket.get(group) ?? 0) + hours);
     }
   }
+  const capacityByBucket = new Map<string, number>();
+  for (const [bucketKey, bucketPeriod] of bucketPeriods.entries()) {
+    let capacityHours = 0;
+    for (const resource of resourceMap.values()) {
+      const effectiveAvailableHours = calculateEffectiveAvailableHours({
+        availability: resource.availability,
+        periodStart: bucketPeriod.start,
+        periodEnd: bucketPeriod.end,
+        context: contexts.get(resource.id),
+      });
+      capacityHours += effectiveAvailableHours;
 
-  const resources = await db.resource.findMany({
-    where: { isActive: true },
-    select: { availability: true },
-  });
+      if (input.groupBy !== "project" && effectiveAvailableHours > 0) {
+        const group =
+          input.groupBy === "chapter"
+            ? resource.chapter ?? "Unassigned"
+            : resource.displayName ?? "Unknown";
+        const groupCapacityBucket = groupCapacityBuckets.get(bucketKey)!;
+        groupCapacityBucket.set(
+          group,
+          (groupCapacityBucket.get(group) ?? 0) + effectiveAvailableHours,
+        );
+      }
+    }
+    capacityByBucket.set(bucketKey, capacityHours);
+  }
 
-  const dailyCapacityHours = resources.reduce(
-    (sum, resource) =>
-      sum +
-      getAverageDailyAvailabilityHours(
-        resource.availability as Record<string, number | null | undefined>,
-      ),
-    0,
-  );
-
-  return [...buckets.entries()]
+  return [...bucketPeriods.entries()]
     .sort(([left], [right]) => left.localeCompare(right))
-    .map(([period, groups]) => ({
-      period,
-      groups: [...groups.entries()].map(([name, hours]) => ({ name, hours })),
-      totalHours: [...groups.values()].reduce((sum, hours) => sum + hours, 0),
-      capacityHours:
-        dailyCapacityHours * (input.granularity === "week" ? 5 : 22),
-    }));
+    .map(([period, bucketPeriod]) => {
+      const groups = buckets.get(period) ?? new Map<string, number>();
+      const groupCapacities = groupCapacityBuckets.get(period) ?? new Map<string, number>();
+      const groupNames = new Set<string>([
+        ...groups.keys(),
+        ...(input.groupBy === "project" ? [] : groupCapacities.keys()),
+      ]);
+      const groupRows = [...groupNames]
+        .map((name) => {
+          const hours = groups.get(name) ?? 0;
+          const groupCapacityHours =
+            input.groupBy === "project" ? undefined : groupCapacities.get(name) ?? 0;
+          const remainingHours =
+            groupCapacityHours === undefined
+              ? undefined
+              : Math.max(0, groupCapacityHours - hours);
+          const overbookedHours =
+            groupCapacityHours === undefined
+              ? undefined
+              : Math.max(0, hours - groupCapacityHours);
+          return {
+            name,
+            hours,
+            capacityHours: groupCapacityHours,
+            remainingHours,
+            overbookedHours,
+            utilizationPct:
+              groupCapacityHours && groupCapacityHours > 0
+                ? Math.round((hours / groupCapacityHours) * 100)
+                : groupCapacityHours === 0
+                  ? 0
+                  : undefined,
+          };
+        })
+        .sort(
+          (left, right) =>
+            (right.utilizationPct ?? -1) - (left.utilizationPct ?? -1) ||
+            right.hours - left.hours ||
+            left.name.localeCompare(right.name),
+        );
+      const totalHours = [...groups.values()].reduce((sum, hours) => sum + hours, 0);
+      const capacityHours = capacityByBucket.get(period) ?? 0;
+      const remainingCapacityHours = Math.max(0, capacityHours - totalHours);
+      const overbookedHours = Math.max(0, totalHours - capacityHours);
+
+      return {
+        period,
+        groups: groupRows,
+        totalHours,
+        capacityHours,
+        periodStart: bucketPeriod.start.toISOString().slice(0, 10),
+        periodEnd: bucketPeriod.end.toISOString().slice(0, 10),
+        bookedHours: totalHours,
+        remainingHours: remainingCapacityHours,
+        overbookedHours,
+        utilizationPct: capacityHours > 0
+          ? Math.round((totalHours / capacityHours) * 100)
+          : 0,
+        groupCount: groupRows.length,
+        resourceCount: resourceMap.size,
+        derivation: {
+          periodStart: bucketPeriod.start.toISOString().slice(0, 10),
+          periodEnd: bucketPeriod.end.toISOString().slice(0, 10),
+          resourceCount: resourceMap.size,
+          groupCount: groupRows.length,
+          bookedHours: totalHours,
+          capacityHours,
+          remainingCapacityHours,
+          overbookedHours,
+          utilizationPct: capacityHours > 0
+            ? Math.round((totalHours / capacityHours) * 100)
+            : 0,
+        },
+      };
+    });
 }
diff --git a/packages/application/src/use-cases/dashboard/get-project-health.ts b/packages/application/src/use-cases/dashboard/get-project-health.ts
index cc105bb..7a9e3cd 100644
--- a/packages/application/src/use-cases/dashboard/get-project-health.ts
+++ b/packages/application/src/use-cases/dashboard/get-project-health.ts
@@ -1,5 +1,10 @@
 import type { PrismaClient } from "@capakraken/db";
+import type { WeekdayAvailability } from "@capakraken/shared";
 import { calculateInclusiveDays } from "./shared.js";
+import {
+  calculateEffectiveAllocationCostCents,
+  loadDailyAvailabilityContexts,
+} from "./holiday-capacity.js";
 
 export interface ProjectHealthRow {
   id: string;
@@ -11,6 +16,53 @@ export interface ProjectHealthRow {
   staffingHealth: number;
   timelineHealth: number;
   compositeScore: number;
+  budgetCents?: number | null;
+  spentCents?: number;
+  remainingBudgetCents?: number | null;
+  budgetUtilizationPercent?: number | null;
+  demandHeadcountTotal?: number;
+  demandHeadcountFilled?: number;
+  demandHeadcountOpen?: number;
+  demandRequirementCount?: number;
+  plannedEndDate?: Date | null;
+  daysUntilEndDate?: number | null;
+  timelineStatus?: "ON_TRACK" | "DUE_SOON" | "OVERDUE" | "UNSCHEDULED";
+  calendarLocations?: Array<{
+    countryCode: string | null;
+    countryName: string | null;
+    federalState: string | null;
+    metroCityName: string | null;
+    assignmentCount: number;
+    spentCents: number;
+  }>;
+}
+
+function hasAvailability<T extends { availability?: unknown }>(
+  resource: T | null | undefined,
+): resource is T & { availability: WeekdayAvailability } {
+  return resource !== null && resource !== undefined && resource.availability !== null && resource.availability !== undefined;
+}
+
+function toUtcDayStart(value: Date): Date {
+  return new Date(Date.UTC(
+    value.getUTCFullYear(),
+    value.getUTCMonth(),
+    value.getUTCDate(),
+  ));
+}
+
+function buildLocationKey(input: {
+  countryCode: string | null | undefined;
+  countryName: string | null | undefined;
+  federalState: string | null | undefined;
+  metroCityName: string | null | undefined;
+}): string {
+  return JSON.stringify({
+    countryCode: input.countryCode ?? null,
+    countryName: input.countryName ?? null,
+    federalState: input.federalState ?? null,
+    metroCityName: input.metroCityName ?? null,
+  });
 }
 
 export async function getDashboardProjectHealth(
@@ -55,14 +107,79 @@ export async function getDashboardProjectHealth(
       startDate: true,
       endDate: true,
       dailyCostCents: true,
-    },
+        resource: {
+          select: {
+            id: true,
+            availability: true,
+            countryId: true,
+            federalState: true,
+            metroCityId: true,
+            country: { select: { code: true, name: true } },
+            metroCity: { select: { name: true } },
+          },
+        },
+      },
   });
 
+  const contextStart = assignments.length > 0
+    ? new Date(Math.min(...assignments.map((assignment) => assignment.startDate.getTime())))
+    : new Date();
+  const contextEnd = assignments.length > 0
+    ? new Date(Math.max(...assignments.map((assignment) => assignment.endDate.getTime())))
+    : new Date();
+  const contexts = await loadDailyAvailabilityContexts(
+    db,
+    assignments
+      .map((assignment) => assignment.resource)
+      .filter(hasAvailability)
+      .map((resource) => ({
+        id: resource.id,
+        availability: resource.availability as unknown as WeekdayAvailability,
+        countryId: resource.countryId,
+        countryCode: resource.country?.code,
+        federalState: resource.federalState,
+        metroCityId: resource.metroCityId,
+        metroCityName: resource.metroCity?.name,
+      })),
+    contextStart,
+    contextEnd,
+  );
   const spentByProject = new Map<string, number>();
+  const calendarLocationsByProject = new Map<string, Map<string, NonNullable<ProjectHealthRow["calendarLocations"]>[number]>>();
   for (const a of assignments) {
-    const days = calculateInclusiveDays(a.startDate, a.endDate);
-    const cost = (a.dailyCostCents ?? 0) * days;
+    const cost = hasAvailability(a.resource)
+      ? calculateEffectiveAllocationCostCents({
+        availability: a.resource.availability as unknown as WeekdayAvailability,
+        startDate: a.startDate,
+        endDate: a.endDate,
+        dailyCostCents: a.dailyCostCents ?? 0,
+        periodStart: a.startDate,
+        periodEnd: a.endDate,
+        context: contexts.get(a.resource.id),
+      })
+      : (a.dailyCostCents ?? 0) * calculateInclusiveDays(a.startDate, a.endDate);
     spentByProject.set(a.projectId, (spentByProject.get(a.projectId) ?? 0) + cost);
+    if (a.resource) {
+      const projectLocations = calendarLocationsByProject.get(a.projectId) ?? new Map();
+      const locationKey = buildLocationKey({
+        countryCode: a.resource.country?.code,
+        countryName: a.resource.country?.name,
+        federalState: a.resource.federalState,
+        metroCityName: a.resource.metroCity?.name,
+      });
+      const summary = projectLocations.get(locationKey) ?? {
+        countryCode: a.resource.country?.code ?? null,
+        countryName: a.resource.country?.name ?? null,
+        federalState: a.resource.federalState ?? null,
+        metroCityName: a.resource.metroCity?.name ?? null,
+        assignmentCount: 0,
+        spentCents: 0,
+      };
+      summary.assignmentCount += 1;
+      summary.spentCents += cost;
+      projectLocations.set(locationKey, summary);
+      calendarLocationsByProject.set(a.projectId, projectLocations);
+    }
   }
 
   const now = new Date();
@@ -71,7 +188,7 @@ export async function getDashboardProjectHealth(
     // Budget health: 100 - pctUsed (capped at 100)
     const spentCents = spentByProject.get(p.id) ?? 0;
     const pctUsed =
-      p.budgetCents > 0
+      (p.budgetCents ?? 0) > 0
         ? Math.round((spentCents / p.budgetCents) * 100)
         : 0;
     const budgetHealth = Math.max(0, 100 - Math.min(pctUsed, 100));
@@ -87,12 +204,29 @@ export async function getDashboardProjectHealth(
       totalDemands > 0 ? Math.round((filledDemands / totalDemands) * 100) : 100;
 
     // Timeline health: 100 if end date > today, else 0
-    const timelineHealth = p.endDate > now ? 100 : 0;
+    const endDate = p.endDate ? toUtcDayStart(p.endDate) : null;
+    const today = toUtcDayStart(now);
+    const daysUntilEndDate = endDate
+      ? Math.round((endDate.getTime() - today.getTime()) / 86_400_000)
+      : null;
+    const timelineStatus = endDate === null
+      ? "UNSCHEDULED"
+      : daysUntilEndDate! < 0
+        ? "OVERDUE"
+        : daysUntilEndDate! <= 14
+          ? "DUE_SOON"
+          : "ON_TRACK";
+    const timelineHealth = endDate === null
+      ? 100
+      : endDate > today
+        ? 100
+        : 0;
 
     // Composite = average of 3 dimensions
     const compositeScore = Math.round(
       (budgetHealth + staffingHealth + timelineHealth) / 3,
     );
+    const remainingBudgetCents = p.budgetCents == null ? null : p.budgetCents - spentCents;
 
     return {
       id: p.id,
@@ -104,6 +238,19 @@ export async function getDashboardProjectHealth(
       staffingHealth,
       timelineHealth,
       compositeScore,
+      budgetCents: p.budgetCents ?? null,
+      spentCents,
+      remainingBudgetCents,
+      budgetUtilizationPercent: p.budgetCents && p.budgetCents > 0 ? pctUsed : null,
+      demandHeadcountTotal: totalDemands,
+      demandHeadcountFilled: filledDemands,
+      demandHeadcountOpen: Math.max(totalDemands - filledDemands, 0),
+      demandRequirementCount: p.demandRequirements.length,
+      plannedEndDate: p.endDate ?? null,
+      daysUntilEndDate,
+      timelineStatus,
+      calendarLocations: Array.from(calendarLocationsByProject.get(p.id)?.values() ?? [])
+        .sort((left, right) => right.spentCents - left.spentCents),
     };
   });
 
diff --git a/packages/application/src/use-cases/dashboard/holiday-capacity.ts b/packages/application/src/use-cases/dashboard/holiday-capacity.ts
new file mode 100644
index 0000000..966dec8
--- /dev/null
+++ b/packages/application/src/use-cases/dashboard/holiday-capacity.ts
@@ -0,0 +1,459 @@
+import { VacationStatus } from "@capakraken/db";
+import { getPublicHolidays, type WeekdayAvailability } from "@capakraken/shared";
+
+const MILLISECONDS_PER_DAY = 86_400_000;
+
+type CalendarScope = "COUNTRY" | "STATE" | "CITY";
+
+type HolidayCalendarEntryRecord = {
+  date: Date;
+  isRecurringAnnual: boolean;
+};
+
+type HolidayCalendarRecord = {
+  entries: HolidayCalendarEntryRecord[];
+};
+
+type VacationRecord = {
+  resourceId: string;
+  startDate: Date;
+  endDate: Date;
+  type: string;
+  isHalfDay: boolean;
+};
+
+type ResourceHolidayProfile = {
+  id: string;
+  availability: WeekdayAvailability;
+  countryId: string | null | undefined;
+  countryCode: string | null | undefined;
+  federalState: string | null | undefined;
+  metroCityId: string | null | undefined;
+  metroCityName: string | null | undefined;
+};
+
+type DashboardHolidayDbClient = {
+  holidayCalendar?: {
+    findMany: (args: {
+      where: Record<string, unknown>;
+      include: { entries: true };
+      orderBy: Array<Record<string, "asc" | "desc">>;
+    }) => Promise<unknown[]>;
+  };
+  vacation?: {
+    findMany: (args: {
+      where: Record<string, unknown>;
+      select: Record<string, boolean | Record<string, boolean>>;
+    }) => Promise<unknown[]>;
+  };
+};
+
+type DailyAvailabilityContext = {
+  holidayDates: Set<string>;
+  absenceFractionsByDate: Map<string, number>;
+};
+
+const DAY_KEYS: (keyof WeekdayAvailability)[] = [
+  "sunday",
+  "monday",
+  "tuesday",
+  "wednesday",
+  "thursday",
+  "friday",
+  "saturday",
+];
+
+const CITY_HOLIDAY_RULES: Array<{
+  countryCode: string;
+  cityName: string;
+  resolveDates: (year: number) => string[];
+}> = [
+  {
+    countryCode: "DE",
+    cityName: "Augsburg",
+    resolveDates: (year) => [`${year}-08-08`],
+  },
+];
+
+function toIsoDate(value: Date): string {
+  return value.toISOString().slice(0, 10);
+}
+
+function normalizeCityName(cityName?: string | null): string | null {
+  const normalized = cityName?.trim().toLowerCase();
+  return normalized && normalized.length > 0 ? normalized : null;
+}
+
+function normalizeStateCode(stateCode?: string | null): string | null {
+  const normalized = stateCode?.trim().toUpperCase();
+  return normalized && normalized.length > 0 ? normalized : null;
+}
+
+function getDailyAvailabilityHours(
+  availability: WeekdayAvailability,
+  date: Date,
+): number {
+  const key = DAY_KEYS[date.getUTCDay()];
+  return key ? (availability[key] ?? 0) : 0;
+}
+
+function listBuiltinHolidayDates(input: {
+  periodStart: Date;
+  periodEnd: Date;
+  countryCode: string | null | undefined;
+  federalState: string | null | undefined;
+  metroCityName: string | null | undefined;
+}): Set<string> {
+  const dates = new Set<string>();
+  const startIso = toIsoDate(input.periodStart);
+  const endIso = toIsoDate(input.periodEnd);
+  const startYear = input.periodStart.getUTCFullYear();
+  const endYear = input.periodEnd.getUTCFullYear();
+
+  if (input.countryCode === "DE") {
+    for (let year = startYear; year <= endYear; year += 1) {
+      for (const holiday of getPublicHolidays(year, input.federalState ?? undefined)) {
+        if (holiday.date >= startIso && holiday.date <= endIso) {
+          dates.add(holiday.date);
+        }
+      }
+    }
+  }
+
+  const normalizedCityName = normalizeCityName(input.metroCityName);
+  if (input.countryCode && normalizedCityName) {
+    for (const rule of CITY_HOLIDAY_RULES) {
+      if (
+        rule.countryCode === input.countryCode
+        && normalizeCityName(rule.cityName) === normalizedCityName
+      ) {
+        for (let year = startYear; year <= endYear; year += 1) {
+          for (const date of rule.resolveDates(year)) {
+            if (date >= startIso && date <= endIso) {
+              dates.add(date);
+            }
+          }
+        }
+      }
+    }
+  }
+
+  return dates;
+}
+
+function resolveCalendarEntryDates(
+  calendars: HolidayCalendarRecord[],
+  periodStart: Date,
+  periodEnd: Date,
+): Set<string> {
+  const dates = new Set<string>();
+  const startIso = toIsoDate(periodStart);
+  const endIso = toIsoDate(periodEnd);
+  const startYear = periodStart.getUTCFullYear();
+  const endYear = periodEnd.getUTCFullYear();
+
+  for (const calendar of calendars) {
+    for (const entry of calendar.entries) {
+      const baseDate = new Date(entry.date);
+      for (let year = startYear; year <= endYear; year += 1) {
+        const effectiveDate = entry.isRecurringAnnual
+          ? new Date(Date.UTC(year, baseDate.getUTCMonth(), baseDate.getUTCDate()))
+          : baseDate;
+        const isoDate = toIsoDate(effectiveDate);
+        if (isoDate >= startIso && isoDate <= endIso) {
+          dates.add(isoDate);
+        }
+        if (!entry.isRecurringAnnual) {
+          break;
+        }
+      }
+    }
+  }
+
+  return dates;
+}
+
+async function loadCustomHolidayDates(
+  db: DashboardHolidayDbClient,
+  input: {
+    periodStart: Date;
+    periodEnd: Date;
+    countryId: string | null | undefined;
+    federalState: string | null | undefined;
+    metroCityId: string | null | undefined;
+  },
+): Promise<Set<string>> {
+  if (!input.countryId || typeof db.holidayCalendar?.findMany !== "function") {
+    return new Set();
+  }
+
+  const stateCode = normalizeStateCode(input.federalState);
+  const metroCityId = input.metroCityId?.trim() || null;
+  const calendars = await db.holidayCalendar.findMany({
+    where: {
+      isActive: true,
+      countryId: input.countryId,
+      OR: [
+        { scopeType: "COUNTRY" as CalendarScope },
+        ...(stateCode ? [{ scopeType: "STATE" as CalendarScope, stateCode }] : []),
+        ...(metroCityId ? [{ scopeType: "CITY" as CalendarScope, metroCityId }] : []),
+      ],
+    },
+    include: { entries: true },
+    orderBy: [{ priority: "asc" }, { createdAt: "asc" }],
+  });
+
+  return resolveCalendarEntryDates(
+    calendars as HolidayCalendarRecord[],
+    input.periodStart,
+    input.periodEnd,
+  );
+}
+
+function buildHolidayProfileKey(profile: ResourceHolidayProfile): string {
+  return JSON.stringify({
+    countryId: profile.countryId ?? null,
+    countryCode: profile.countryCode ?? null,
+    federalState: profile.federalState ?? null,
+    metroCityId: profile.metroCityId ?? null,
+    metroCityName: profile.metroCityName ?? null,
+  });
+}
+
+export async function loadDailyAvailabilityContexts(
+  db: DashboardHolidayDbClient,
+  resources: ResourceHolidayProfile[],
+  periodStart: Date,
+  periodEnd: Date,
+): Promise<Map<string, DailyAvailabilityContext>> {
+  const profileHolidayCache = new Map<string, Promise<Set<string>>>();
+  const resourceIds = resources.map((resource) => resource.id);
+
+  const vacations = resourceIds.length > 0 && typeof db.vacation?.findMany === "function"
+    ? await db.vacation.findMany({
+      where: {
+        resourceId: { in: resourceIds },
+        status: VacationStatus.APPROVED,
+        startDate: { lte: periodEnd },
+        endDate: { gte: periodStart },
+      },
+      select: {
+        resourceId: true,
+        startDate: true,
+        endDate: true,
+        type: true,
+        isHalfDay: true,
+      },
+    })
+    : [];
+
+  const vacationsByResourceId = new Map<string, VacationRecord[]>();
+  for (const vacation of vacations as VacationRecord[]) {
+    const items = vacationsByResourceId.get(vacation.resourceId) ?? [];
+    items.push(vacation);
+    vacationsByResourceId.set(vacation.resourceId, items);
+  }
+
+  const contexts = new Map<string, DailyAvailabilityContext>();
+
+  for (const resource of resources) {
+    const profileKey = buildHolidayProfileKey(resource);
+    const holidayPromise = profileHolidayCache.get(profileKey)
+      ?? (async () => {
+        const builtin = listBuiltinHolidayDates({
+          periodStart,
+          periodEnd,
+          countryCode: resource.countryCode,
+          federalState: resource.federalState,
+          metroCityName: resource.metroCityName,
+        });
+        const custom = await loadCustomHolidayDates(db, {
+          periodStart,
+          periodEnd,
+          countryId: resource.countryId,
+          federalState: resource.federalState,
+          metroCityId: resource.metroCityId,
+        });
+        return new Set([...builtin, ...custom]);
+      })();
+
+    if (!profileHolidayCache.has(profileKey)) {
+      profileHolidayCache.set(profileKey, holidayPromise);
+    }
+
+    const holidayDates = new Set(await holidayPromise);
+    const absenceFractionsByDate = new Map<string, number>();
+    const resourceVacations = vacationsByResourceId.get(resource.id) ?? [];
+
+    for (const vacation of resourceVacations) {
+      const overlapStart = new Date(
+        Math.max(vacation.startDate.getTime(), periodStart.getTime()),
+      );
+      const overlapEnd = new Date(
+        Math.min(vacation.endDate.getTime(), periodEnd.getTime()),
+      );
+
+      if (overlapStart > overlapEnd) {
+        continue;
+      }
+
+      const cursor = new Date(overlapStart);
+      cursor.setUTCHours(0, 0, 0, 0);
+      const end = new Date(overlapEnd);
+      end.setUTCHours(0, 0, 0, 0);
+
+      while (cursor <= end) {
+        const isoDate = toIsoDate(cursor);
+        const fraction = vacation.isHalfDay ? 0.5 : 1;
+
+        if (vacation.type === "PUBLIC_HOLIDAY") {
+          holidayDates.add(isoDate);
+        }
+
+        const existing = absenceFractionsByDate.get(isoDate) ?? 0;
+        if (vacation.type === "PUBLIC_HOLIDAY" || !holidayDates.has(isoDate)) {
+          absenceFractionsByDate.set(isoDate, Math.max(existing, fraction));
+        }
+
+        cursor.setUTCDate(cursor.getUTCDate() + 1);
+      }
+    }
+
+    for (const isoDate of holidayDates) {
+      const existing = absenceFractionsByDate.get(isoDate) ?? 0;
+      absenceFractionsByDate.set(isoDate, Math.max(existing, 1));
+    }
+
+    contexts.set(resource.id, {
+      holidayDates,
+      absenceFractionsByDate,
+    });
+  }
+
+  return contexts;
+}
+
+function calculateDayAvailabilityFraction(
+  context: DailyAvailabilityContext | undefined,
+  isoDate: string,
+): number {
+  const fraction = context?.absenceFractionsByDate.get(isoDate) ?? 0;
+  return Math.max(0, 1 - fraction);
+}
+
+export function calculateEffectiveAvailableHours(input: {
+  availability: WeekdayAvailability;
+  periodStart: Date;
+  periodEnd: Date;
+  context: DailyAvailabilityContext | undefined;
+}): number {
+  let hours = 0;
+  const cursor = new Date(input.periodStart);
+  cursor.setUTCHours(0, 0, 0, 0);
+  const end = new Date(input.periodEnd);
+  end.setUTCHours(0, 0, 0, 0);
+
+  while (cursor <= end) {
+    const baseHours = getDailyAvailabilityHours(input.availability, cursor);
+    if (baseHours > 0) {
+      hours += baseHours * calculateDayAvailabilityFraction(input.context, toIsoDate(cursor));
+    }
+    cursor.setUTCDate(cursor.getUTCDate() + 1);
+  }
+
+  return hours;
+}
+
+export function calculateEffectiveAllocationHours(input: {
+  availability: WeekdayAvailability;
+  startDate: Date;
+  endDate: Date;
+  hoursPerDay: number;
+  periodStart: Date;
+  periodEnd: Date;
+  context: DailyAvailabilityContext | undefined;
+}): number {
+  let hours = 0;
+  const overlapStart = new Date(
+    Math.max(input.startDate.getTime(), input.periodStart.getTime()),
+  );
+  const overlapEnd = new Date(
+    Math.min(input.endDate.getTime(), input.periodEnd.getTime()),
+  );
+
+  if (overlapStart > overlapEnd) {
+    return 0;
+  }
+
+  const cursor = new Date(overlapStart);
+  cursor.setUTCHours(0, 0, 0, 0);
+  const end = new Date(overlapEnd);
+  end.setUTCHours(0, 0, 0, 0);
+
+  while (cursor <= end) {
+    const baseHours = getDailyAvailabilityHours(input.availability, cursor);
+    if (baseHours > 0) {
+      hours += input.hoursPerDay * calculateDayAvailabilityFraction(input.context, toIsoDate(cursor));
+    }
+    cursor.setUTCDate(cursor.getUTCDate() + 1);
+  }
+
+  return hours;
+}
+
+export function calculateEffectiveAllocationCostCents(input: {
+  availability: WeekdayAvailability;
+  startDate: Date;
+  endDate: Date;
+  dailyCostCents: number;
+  periodStart: Date;
+  periodEnd: Date;
+  context: DailyAvailabilityContext | undefined;
+}): number {
+  let costCents = 0;
+  const overlapStart = new Date(
+    Math.max(input.startDate.getTime(), input.periodStart.getTime()),
+  );
+  const overlapEnd = new Date(
+    Math.min(input.endDate.getTime(), input.periodEnd.getTime()),
+  );
+
+  if (overlapStart > overlapEnd) {
+    return 0;
+  }
+
+  const cursor = new Date(overlapStart);
+  cursor.setUTCHours(0, 0, 0, 0);
+  const end = new Date(overlapEnd);
+  end.setUTCHours(0, 0, 0, 0);
+
+  while (cursor <= end) {
+    const baseHours = getDailyAvailabilityHours(input.availability, cursor);
+    if (baseHours > 0) {
+      costCents += input.dailyCostCents * calculateDayAvailabilityFraction(input.context, toIsoDate(cursor));
+    }
+    cursor.setUTCDate(cursor.getUTCDate() + 1);
+  }
+
+  return Math.round(costCents);
+}
+
+export function enumerateIsoDates(
+  periodStart: Date,
+  periodEnd: Date,
+): string[] {
+  const dates: string[] = [];
+  const cursor = new Date(periodStart);
+  cursor.setUTCHours(0, 0, 0, 0);
+  const end = new Date(periodEnd);
+  end.setUTCHours(0, 0, 0, 0);
+
+  while (cursor <= end) {
+    dates.push(toIsoDate(cursor));
+    cursor.setTime(cursor.getTime() + MILLISECONDS_PER_DAY);
+  }
+
+  return dates;
+}
+
+export type { DailyAvailabilityContext, ResourceHolidayProfile };
diff --git a/packages/application/src/use-cases/dashboard/index.ts b/packages/application/src/use-cases/dashboard/index.ts
index 640e530..44d7626 100644
--- a/packages/application/src/use-cases/dashboard/index.ts
+++ b/packages/application/src/use-cases/dashboard/index.ts
@@ -5,6 +5,8 @@ export {
 export {
   getDashboardPeakTimes,
   type GetDashboardPeakTimesInput,
+  type PeakTimesPeriodDerivation,
+  type PeakTimesPeriodRow,
 } from "./get-peak-times.js";
 
 export {
@@ -15,16 +17,22 @@ export {
 export {
   getDashboardDemand,
   type GetDashboardDemandInput,
+  type DemandCalendarLocationSummary,
+  type DemandRowDerivation,
+  type DashboardDemandRow,
 } from "./get-demand.js";
 
 export {
   getDashboardChargeabilityOverview,
   type GetDashboardChargeabilityOverviewInput,
+  type DashboardChargeabilityDerivation,
+  type DashboardChargeabilityRow,
 } from "./get-chargeability-overview.js";
 
 export {
   getDashboardBudgetForecast,
   type BudgetForecastRow,
+  type BudgetForecastLocationSummary,
 } from "./get-budget-forecast.js";
 
 export {
diff --git a/packages/application/src/use-cases/dashboard/load-dashboard-planning-read-model.ts b/packages/application/src/use-cases/dashboard/load-dashboard-planning-read-model.ts
index 32db2eb..b51ce8f 100644
--- a/packages/application/src/use-cases/dashboard/load-dashboard-planning-read-model.ts
+++ b/packages/application/src/use-cases/dashboard/load-dashboard-planning-read-model.ts
@@ -18,6 +18,20 @@ export const DASHBOARD_PLANNING_ALLOCATION_INCLUDE = {
       chapter: true,
       eid: true,
       lcrCents: true,
+      availability: true,
+      countryId: true,
+      federalState: true,
+      metroCityId: true,
+      country: {
+        select: {
+          code: true,
+        },
+      },
+      metroCity: {
+        select: {
+          name: true,
+        },
+      },
     },
   },
 } as const;
diff --git a/packages/application/src/use-cases/dispo-import/read-workbook.ts b/packages/application/src/use-cases/dispo-import/read-workbook.ts
index 10e79e0..e485aa8 100644
--- a/packages/application/src/use-cases/dispo-import/read-workbook.ts
+++ b/packages/application/src/use-cases/dispo-import/read-workbook.ts
@@ -1,4 +1,4 @@
-import XLSX from "xlsx";
+import * as XLSX from "xlsx";
 
 export type WorksheetCellValue = boolean | Date | number | string | null;
 export type WorksheetMatrix = WorksheetCellValue[][];
diff --git a/packages/application/src/use-cases/resource/recompute-resource-value-scores.ts b/packages/application/src/use-cases/resource/recompute-resource-value-scores.ts
index 70fad1a..606a6bc 100644
--- a/packages/application/src/use-cases/resource/recompute-resource-value-scores.ts
+++ b/packages/application/src/use-cases/resource/recompute-resource-value-scores.ts
@@ -1,9 +1,14 @@
 import type { PrismaClient } from "@capakraken/db";
 import { computeValueScore } from "@capakraken/staffing";
-import { VALUE_SCORE_WEIGHTS } from "@capakraken/shared";
+import { VALUE_SCORE_WEIGHTS, type WeekdayAvailability } from "@capakraken/shared";
 import { listAssignmentBookings } from "../allocation/list-assignment-bookings.js";
+import {
+  calculateEffectiveAllocationHours,
+  calculateEffectiveAvailableHours,
+  loadDailyAvailabilityContexts,
+} from "../dashboard/holiday-capacity.js";
 
-type ResourceValueScoreDbClient = Partial<Pick<PrismaClient, "systemSettings">> &
+type ResourceValueScoreDbClient = Partial<Pick<PrismaClient, "systemSettings" | "holidayCalendar" | "vacation">> &
   Pick<PrismaClient, "assignment" | "resource" | "$transaction">;
 
 export interface RecomputeResourceValueScoresInput {
@@ -30,6 +35,12 @@ export async function recomputeResourceValueScores(
         skills: true,
         lcrCents: true,
         chargeabilityTarget: true,
+        availability: true,
+        countryId: true,
+        federalState: true,
+        metroCityId: true,
+        country: { select: { code: true } },
+        metroCity: { select: { name: true } },
       },
     }),
     db.systemSettings?.findUnique?.({ where: { id: "singleton" } }) ?? Promise.resolve(null),
@@ -39,11 +50,27 @@ export async function recomputeResourceValueScores(
     return { updated: 0 };
   }
 
+  const periodStart = new Date(Date.now() - daysBack * 24 * 60 * 60 * 1000);
+  const periodEnd = new Date();
   const bookings = await listAssignmentBookings(db, {
-    startDate: new Date(Date.now() - daysBack * 24 * 60 * 60 * 1000),
-    endDate: new Date(),
+    startDate: periodStart,
+    endDate: periodEnd,
     resourceIds: resources.map((resource) => resource.id),
   });
+  const contexts = await loadDailyAvailabilityContexts(
+    db,
+    resources.map((resource) => ({
+      id: resource.id,
+      availability: resource.availability as unknown as WeekdayAvailability,
+      countryId: resource.countryId,
+      countryCode: resource.country?.code,
+      federalState: resource.federalState,
+      metroCityId: resource.metroCityId,
+      metroCityName: resource.metroCity?.name,
+    })),
+    periodStart,
+    periodEnd,
+  );
 
   const defaultWeights = {
     skillDepth: VALUE_SCORE_WEIGHTS.SKILL_DEPTH,
@@ -65,20 +92,29 @@ export async function recomputeResourceValueScores(
     yearsExperience?: number;
   };
 
-  const totalWorkDays = daysBack * (5 / 7);
-  const availableHours = totalWorkDays * 8;
-
   const updates = resources.map((resource) => {
     const resourceBookings = bookings.filter((booking) => booking.resourceId === resource.id);
-    const bookedHours = resourceBookings.reduce((sum, booking) => {
-      const days = Math.max(
-        0,
-        (new Date(booking.endDate).getTime() - new Date(booking.startDate).getTime()) /
-          (1000 * 60 * 60 * 24) +
-          1,
-      );
-      return sum + booking.hoursPerDay * days;
-    }, 0);
+    const availability = resource.availability as unknown as WeekdayAvailability;
+    const context = contexts.get(resource.id);
+    const availableHours = calculateEffectiveAvailableHours({
+      availability,
+      periodStart,
+      periodEnd,
+      context,
+    });
+    const bookedHours = resourceBookings.reduce(
+      (sum, booking) =>
+        sum + calculateEffectiveAllocationHours({
+          availability,
+          startDate: booking.startDate,
+          endDate: booking.endDate,
+          hoursPerDay: booking.hoursPerDay,
+          periodStart,
+          periodEnd,
+          context,
+        }),
+      0,
+    );
     const currentChargeability =
       availableHours > 0 ? Math.min(100, (bookedHours / availableHours) * 100) : 0;
     const skills = (resource.skills as unknown as SkillRow[]) ?? [];
diff --git a/packages/db/package.json b/packages/db/package.json
index f4a06a4..35d8b57 100644
--- a/packages/db/package.json
+++ b/packages/db/package.json
@@ -8,17 +8,20 @@
     "./client": "./src/client.ts"
   },
   "scripts": {
-    "db:push": "prisma db push --schema ./prisma/schema.prisma",
-    "db:migrate": "prisma migrate dev --schema ./prisma/schema.prisma",
-    "db:migrate:deploy": "prisma migrate deploy --schema ./prisma/schema.prisma",
-    "db:seed": "tsx src/seed.ts",
-    "db:seed:dispo-v2": "tsx src/seed-dispo-v2.ts",
-    "db:seed:vacations": "dotenv -e ../../.env -- tsx src/seed-vacations.ts",
-    "db:reset:dispo": "tsx src/reset-dispo-import.ts",
-    "db:import:dispo": "tsx src/import-dispo-batch.ts",
-    "db:excel": "tsx src/generate-excel.ts",
-    "db:studio": "prisma studio --schema ./prisma/schema.prisma",
-    "db:generate": "prisma generate --schema ./prisma/schema.prisma",
+    "db:doctor": "node ../../scripts/db-doctor.mjs capakraken",
+    "db:push": "node ../../scripts/with-env.mjs prisma db push --schema ./prisma/schema.prisma",
+    "db:migrate": "node ../../scripts/with-env.mjs prisma migrate dev --schema ./prisma/schema.prisma",
+    "db:migrate:deploy": "node ../../scripts/with-env.mjs prisma migrate deploy --schema ./prisma/schema.prisma",
+    "db:seed": "node ../../scripts/with-env.mjs tsx src/seed.ts",
+    "db:seed:holiday-demo-resources": "node ../../scripts/with-env.mjs tsx src/seed-holiday-demo-resources.ts",
+    "db:seed:holidays": "node ../../scripts/with-env.mjs tsx src/seed-holiday-calendars.ts",
+    "db:seed:dispo-v2": "node ../../scripts/with-env.mjs tsx src/seed-dispo-v2.ts",
+    "db:seed:vacations": "node ../../scripts/with-env.mjs tsx src/seed-vacations.ts",
+    "db:reset:dispo": "node ../../scripts/with-env.mjs tsx src/reset-dispo-import.ts",
+    "db:import:dispo": "node ../../scripts/with-env.mjs tsx src/import-dispo-batch.ts",
+    "db:excel": "node ../../scripts/with-env.mjs tsx src/generate-excel.ts",
+    "db:studio": "node ../../scripts/with-env.mjs prisma studio --schema ./prisma/schema.prisma",
+    "db:generate": "node ../../scripts/with-env.mjs prisma generate --schema ./prisma/schema.prisma",
     "test:unit": "tsx --test src/*.test.ts",
     "typecheck": "tsc --noEmit"
   },
diff --git a/packages/db/prisma/schema.prisma b/packages/db/prisma/schema.prisma
index 90e0c93..3a6e46f 100644
--- a/packages/db/prisma/schema.prisma
+++ b/packages/db/prisma/schema.prisma
@@ -106,6 +106,12 @@ enum VacationStatus {
   CANCELLED
 }
 
+enum HolidayCalendarScope {
+  COUNTRY
+  STATE
+  CITY
+}
+
 enum ImportBatchStatus {
   DRAFT
   STAGING
@@ -194,6 +200,7 @@ model User {
   broadcasts         NotificationBroadcast[] @relation("broadcastSender")
   comments           Comment[]
   activeSessions     ActiveSession[]
+  reportTemplates    ReportTemplate[]
 
   createdAt         DateTime  @default(now())
   updatedAt         DateTime  @updatedAt
@@ -201,6 +208,32 @@ model User {
   @@map("users")
 }
 
+enum ReportTemplateEntity {
+  RESOURCE
+  PROJECT
+  ASSIGNMENT
+  RESOURCE_MONTH
+}
+
+model ReportTemplate {
+  id          String               @id @default(cuid())
+  ownerId     String
+  name        String
+  description String?
+  entity      ReportTemplateEntity
+  config      Json                 @db.JsonB
+  isShared    Boolean              @default(false)
+
+  owner       User                 @relation(fields: [ownerId], references: [id], onDelete: Cascade)
+
+  createdAt   DateTime             @default(now())
+  updatedAt   DateTime             @updatedAt
+
+  @@index([ownerId, updatedAt])
+  @@unique([ownerId, name])
+  @@map("report_templates")
+}
+
 model Account {
   id                String  @id @default(cuid())
   userId            String
@@ -529,6 +562,7 @@ model Country {
   isActive          Boolean     @default(true)
 
   metroCities       MetroCity[]
+  holidayCalendars  HolidayCalendar[]
   resources         Resource[]
 
   createdAt         DateTime    @default(now())
@@ -543,7 +577,8 @@ model MetroCity {
   countryId String
   country   Country  @relation(fields: [countryId], references: [id])
 
-  resources Resource[]
+  resources        Resource[]
+  holidayCalendars HolidayCalendar[]
 
   createdAt DateTime @default(now())
   updatedAt DateTime @updatedAt
@@ -552,6 +587,46 @@ model MetroCity {
   @@map("metro_cities")
 }
 
+model HolidayCalendar {
+  id          String               @id @default(cuid())
+  name        String
+  scopeType   HolidayCalendarScope
+  countryId   String
+  stateCode   String?
+  metroCityId String?
+  isActive    Boolean              @default(true)
+  priority    Int                  @default(0)
+  createdAt   DateTime             @default(now())
+  updatedAt   DateTime             @updatedAt
+
+  country     Country              @relation(fields: [countryId], references: [id], onDelete: Cascade)
+  metroCity   MetroCity?           @relation(fields: [metroCityId], references: [id], onDelete: Cascade)
+  entries     HolidayCalendarEntry[]
+
+  @@index([countryId, scopeType])
+  @@index([countryId, stateCode])
+  @@index([metroCityId])
+  // Scope uniqueness is enforced via partial unique indexes in SQL migrations.
+  @@map("holiday_calendars")
+}
+
+model HolidayCalendarEntry {
+  id                String          @id @default(cuid())
+  holidayCalendarId String
+  date              DateTime        @db.Date
+  name              String
+  isRecurringAnnual Boolean         @default(false)
+  source            String?
+  createdAt         DateTime        @default(now())
+  updatedAt         DateTime        @updatedAt
+
+  holidayCalendar   HolidayCalendar @relation(fields: [holidayCalendarId], references: [id], onDelete: Cascade)
+
+  @@unique([holidayCalendarId, date])
+  @@index([date])
+  @@map("holiday_calendar_entries")
+}
+
 // ─── Org Unit Hierarchy ─────────────────────────────────────────────────────
 
 model OrgUnit {
diff --git a/packages/db/src/destructive-db-guard.test.ts b/packages/db/src/destructive-db-guard.test.ts
new file mode 100644
index 0000000..ad3433c
--- /dev/null
+++ b/packages/db/src/destructive-db-guard.test.ts
@@ -0,0 +1,100 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+import { assertDestructiveDbAllowed } from "./destructive-db-guard.js";
+import { assertSafeSeedTarget } from "./safe-destructive-env.js";
+
+const ORIGINAL_ENV = { ...process.env };
+
+function setEnv(values: Record<string, string | undefined>) {
+  process.env = { ...ORIGINAL_ENV };
+
+  for (const [key, value] of Object.entries(values)) {
+    if (value === undefined) {
+      delete process.env[key];
+      continue;
+    }
+
+    process.env[key] = value;
+  }
+}
+
+test.afterEach(() => {
+  process.env = { ...ORIGINAL_ENV };
+});
+
+test("assertDestructiveDbAllowed allows an explicitly confirmed disposable capakraken test database", () => {
+  setEnv({
+    DATABASE_URL: "postgresql://tester:secret@localhost:5432/capakraken_test",
+    ALLOW_DESTRUCTIVE_DB_TOOLS: "true",
+    CONFIRM_DESTRUCTIVE_DB_NAME: "capakraken_test",
+  });
+
+  const target = assertDestructiveDbAllowed({
+    commandName: "db:test",
+    allowedDatabaseNames: ["capakraken_test"],
+  });
+
+  assert.equal(target.databaseName, "capakraken_test");
+  assert.equal(target.hostname, "localhost");
+});
+
+test("assertDestructiveDbAllowed rejects protected live database names even if allowlisted", () => {
+  setEnv({
+    DATABASE_URL: "postgresql://tester:secret@localhost:5432/capakraken",
+    ALLOW_DESTRUCTIVE_DB_TOOLS: "true",
+    CONFIRM_DESTRUCTIVE_DB_NAME: "capakraken",
+  });
+
+  assert.throws(
+    () => assertDestructiveDbAllowed({
+      commandName: "db:test",
+      allowedDatabaseNames: ["capakraken"],
+    }),
+    /explicitly protected/u,
+  );
+});
+
+test("assertDestructiveDbAllowed rejects missing confirmation", () => {
+  setEnv({
+    DATABASE_URL: "postgresql://tester:secret@localhost:5432/capakraken_e2e",
+    ALLOW_DESTRUCTIVE_DB_TOOLS: "true",
+    CONFIRM_DESTRUCTIVE_DB_NAME: "wrong_db",
+  });
+
+  assert.throws(
+    () => assertDestructiveDbAllowed({
+      commandName: "db:test",
+      allowedDatabaseNames: ["capakraken_e2e"],
+    }),
+    /CONFIRM_DESTRUCTIVE_DB_NAME=capakraken_e2e/u,
+  );
+});
+
+test("assertDestructiveDbAllowed rejects missing destructive allow flag", () => {
+  setEnv({
+    DATABASE_URL: "postgresql://tester:secret@localhost:5432/capakraken_ci",
+    ALLOW_DESTRUCTIVE_DB_TOOLS: undefined,
+    CONFIRM_DESTRUCTIVE_DB_NAME: "capakraken_ci",
+  });
+
+  assert.throws(
+    () => assertDestructiveDbAllowed({
+      commandName: "db:test",
+      allowedDatabaseNames: ["capakraken_ci"],
+    }),
+    /ALLOW_DESTRUCTIVE_DB_TOOLS=true/u,
+  );
+});
+
+test("assertSafeSeedTarget rejects legacy planarchy disposable databases", () => {
+  setEnv({
+    DATABASE_URL: "postgresql://tester:secret@localhost:5432/planarchy_test",
+    ALLOW_DESTRUCTIVE_DB_TOOLS: "true",
+    CONFIRM_DESTRUCTIVE_DB_NAME: "planarchy_test",
+  });
+
+  assert.throws(
+    () => assertSafeSeedTarget("db:seed"),
+    /not in the destructive-tool allowlist/u,
+  );
+});
diff --git a/packages/db/src/destructive-db-guard.ts b/packages/db/src/destructive-db-guard.ts
new file mode 100644
index 0000000..29814ca
--- /dev/null
+++ b/packages/db/src/destructive-db-guard.ts
@@ -0,0 +1,70 @@
+import { URL } from "node:url";
+
+interface DestructiveGuardOptions {
+  commandName: string;
+  allowedDatabaseNames?: string[];
+  requireConfirmation?: boolean;
+}
+
+const PROTECTED_DATABASE_NAMES = new Set(["capakraken", "planarchy"]);
+
+function parseDatabaseUrl(rawUrl: string) {
+  const parsed = new URL(rawUrl);
+  const databaseName = parsed.pathname.replace(/^\/+/, "");
+
+  return {
+    protocol: parsed.protocol,
+    hostname: parsed.hostname,
+    port: parsed.port,
+    databaseName,
+    username: decodeURIComponent(parsed.username),
+  };
+}
+
+function formatTarget(target: ReturnType<typeof parseDatabaseUrl>) {
+  const port = target.port ? `:${target.port}` : "";
+  return `${target.protocol}//${target.username}@${target.hostname}${port}/${target.databaseName}`;
+}
+
+export function assertDestructiveDbAllowed({
+  commandName,
+  allowedDatabaseNames = [],
+  requireConfirmation = true,
+}: DestructiveGuardOptions) {
+  const rawUrl = process.env.DATABASE_URL;
+
+  if (!rawUrl) {
+    throw new Error(`${commandName} aborted: DATABASE_URL is not configured.`);
+  }
+
+  const target = parseDatabaseUrl(rawUrl);
+  const allowFlag = process.env.ALLOW_DESTRUCTIVE_DB_TOOLS === "true";
+  const confirmationDb = process.env.CONFIRM_DESTRUCTIVE_DB_NAME;
+  const allowlisted = allowedDatabaseNames.includes(target.databaseName);
+
+  if (PROTECTED_DATABASE_NAMES.has(target.databaseName)) {
+    throw new Error(
+      `${commandName} aborted: database '${target.databaseName}' is explicitly protected from destructive tooling. Target=${formatTarget(target)}`,
+    );
+  }
+
+  if (!allowlisted) {
+    throw new Error(
+      `${commandName} aborted: database '${target.databaseName}' is not in the destructive-tool allowlist (${allowedDatabaseNames.join(", ") || "none"}). Target=${formatTarget(target)}`,
+    );
+  }
+
+  if (!allowFlag) {
+    throw new Error(
+      `${commandName} aborted: set ALLOW_DESTRUCTIVE_DB_TOOLS=true to allow destructive database operations. Target=${formatTarget(target)}`,
+    );
+  }
+
+  if (requireConfirmation && confirmationDb !== target.databaseName) {
+    throw new Error(
+      `${commandName} aborted: set CONFIRM_DESTRUCTIVE_DB_NAME=${target.databaseName} to confirm the destructive target. Current value=${confirmationDb ?? "<unset>"}`,
+    );
+  }
+
+  return target;
+}
diff --git a/packages/db/src/generate-excel.ts b/packages/db/src/generate-excel.ts
index 438c904..75d2481 100644
--- a/packages/db/src/generate-excel.ts
+++ b/packages/db/src/generate-excel.ts
@@ -215,12 +215,63 @@ async function buildProjectsSheet(wb: ExcelJS.Workbook) {
 }
 
 async function buildAllocationsSheet(wb: ExcelJS.Workbook) {
-  const allocations = await prisma.allocation.findMany({
-    orderBy: [{ project: { startDate: "asc" } }, { resource: { displayName: "asc" } }],
-    include: {
-      resource: { select: { eid: true, displayName: true, chapter: true } },
-      project:  { select: { shortCode: true, name: true } },
-    },
+  const [assignments, demandRequirements] = await Promise.all([
+    prisma.assignment.findMany({
+      orderBy: [{ project: { startDate: "asc" } }, { resource: { displayName: "asc" } }],
+      include: {
+        resource: { select: { eid: true, displayName: true, chapter: true } },
+        project: { select: { shortCode: true, name: true, startDate: true } },
+      },
+    }),
+    prisma.demandRequirement.findMany({
+      orderBy: [{ project: { startDate: "asc" } }, { role: "asc" }],
+      include: {
+        project: { select: { shortCode: true, name: true, startDate: true } },
+      },
+    }),
+  ]);
+
+  const allocations = [
+    ...assignments.map((assignment) => ({
+      projectStartDate: assignment.project.startDate,
+      projectCode: assignment.project.shortCode,
+      projectName: assignment.project.name,
+      eid: assignment.resource?.eid ?? "",
+      resourceName: assignment.resource?.displayName ?? "",
+      chapter: assignment.resource?.chapter ?? "",
+      role: assignment.role ?? "",
+      startDate: assignment.startDate,
+      endDate: assignment.endDate,
+      hoursPerDay: assignment.hoursPerDay,
+      dailyCostCents: assignment.dailyCostCents,
+      status: assignment.status,
+    })),
+    ...demandRequirements.map((demandRequirement) => ({
+      projectStartDate: demandRequirement.project.startDate,
+      projectCode: demandRequirement.project.shortCode,
+      projectName: demandRequirement.project.name,
+      eid: "",
+      resourceName: "",
+      chapter: "",
+      role: demandRequirement.role ?? "",
+      startDate: demandRequirement.startDate,
+      endDate: demandRequirement.endDate,
+      hoursPerDay: demandRequirement.hoursPerDay,
+      dailyCostCents: 0,
+      status: demandRequirement.status,
+    })),
+  ].sort((left, right) => {
+    const startDiff = left.projectStartDate.getTime() - right.projectStartDate.getTime();
+    if (startDiff !== 0) {
+      return startDiff;
+    }
+
+    const resourceDiff = left.resourceName.localeCompare(right.resourceName);
+    if (resourceDiff !== 0) {
+      return resourceDiff;
+    }
+
+    return left.role.localeCompare(right.role);
   });
 
   const ws = wb.addWorksheet("Allocations", {
@@ -245,12 +296,12 @@ async function buildAllocationsSheet(wb: ExcelJS.Workbook) {
   for (const alloc of allocations) {
     const row: AnyRow = ws.getRow(rowIdx);
     row.values = [
-      alloc.project.shortCode,
-      alloc.project.name,
-      alloc.resource?.eid ?? "",
-      alloc.resource?.displayName ?? "",
-      alloc.resource?.chapter ?? "",
-      alloc.role ?? "",
+      alloc.projectCode,
+      alloc.projectName,
+      alloc.eid,
+      alloc.resourceName,
+      alloc.chapter,
+      alloc.role,
       fmtDate(alloc.startDate),
       fmtDate(alloc.endDate),
       alloc.hoursPerDay,
@@ -268,11 +319,13 @@ async function buildAllocationsSheet(wb: ExcelJS.Workbook) {
 }
 
 async function buildSummarySheet(wb: ExcelJS.Workbook) {
-  const [resourceCount, projectCount, allocationCount] = await Promise.all([
+  const [resourceCount, projectCount, assignmentCount, demandRequirementCount] = await Promise.all([
     prisma.resource.count(),
     prisma.project.count(),
-    prisma.allocation.count(),
+    prisma.assignment.count(),
+    prisma.demandRequirement.count(),
   ]);
+  const allocationCount = assignmentCount + demandRequirementCount;
 
   const ws = wb.addWorksheet("Summary");
   ws.columns = [
diff --git a/packages/db/src/holiday-calendar-seed-data.test.ts b/packages/db/src/holiday-calendar-seed-data.test.ts
new file mode 100644
index 0000000..e7de073
--- /dev/null
+++ b/packages/db/src/holiday-calendar-seed-data.test.ts
@@ -0,0 +1,89 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+import { buildHolidayCalendarSeedDefinitions } from "./holiday-calendar-seed-data.js";
+
+function getDefinition(
+  definitions: ReturnType<typeof buildHolidayCalendarSeedDefinitions>,
+  predicate: (definition: ReturnType<typeof buildHolidayCalendarSeedDefinitions>[number]) => boolean,
+) {
+  const definition = definitions.find(predicate);
+  assert.ok(definition, "expected holiday seed definition to exist");
+  return definition;
+}
+
+test("builds country, state, and city holiday seeds for available profiles", () => {
+  const definitions = buildHolidayCalendarSeedDefinitions({
+    availableCountryCodes: ["DE", "ES", "IN", "US"],
+    availableCitiesByCountry: {
+      DE: ["Augsburg", "Berlin", "Hamburg", "Muenchen", "Stuttgart"],
+      ES: ["Barcelona", "Madrid"],
+      IN: ["Bangalore", "Mumbai"],
+      US: ["Los Angeles", "New York"],
+    },
+    activeGermanStates: ["BW", "BY", "HH"],
+    years: [2026, 2027],
+  });
+
+  const byCalendar = getDefinition(
+    definitions,
+    (definition) => definition.scopeType === "STATE" && definition.countryCode === "DE" && definition.stateCode === "BY",
+  );
+  const nwCalendar = getDefinition(
+    definitions,
+    (definition) => definition.scopeType === "STATE" && definition.countryCode === "DE" && definition.stateCode === "NW",
+  );
+  const madridCalendar = getDefinition(
+    definitions,
+    (definition) => definition.scopeType === "CITY" && definition.countryCode === "ES" && definition.cityName === "Madrid",
+  );
+  const augsburgCalendar = getDefinition(
+    definitions,
+    (definition) => definition.scopeType === "CITY" && definition.countryCode === "DE" && definition.cityName === "Augsburg",
+  );
+  const usCalendar = getDefinition(
+    definitions,
+    (definition) => definition.scopeType === "COUNTRY" && definition.countryCode === "US",
+  );
+
+  assert.ok(
+    byCalendar.entries.some((entry) => entry.date === "2026-01-06" && entry.name === "Heilige Drei Könige"),
+  );
+  assert.ok(
+    byCalendar.entries.some((entry) => entry.date === "2027-08-15" && entry.name === "Mariä Himmelfahrt"),
+  );
+  assert.ok(
+    nwCalendar.entries.some((entry) => entry.date === "2026-06-04" && entry.name === "Fronleichnam"),
+  );
+  assert.ok(
+    !nwCalendar.entries.some((entry) => entry.date === "2026-01-06"),
+  );
+  assert.ok(
+    madridCalendar.entries.some((entry) => entry.date === "2026-05-15" && entry.name === "San Isidro"),
+  );
+  assert.ok(
+    augsburgCalendar.entries.some((entry) => entry.date === "2027-08-08" && entry.name === "Augsburger Friedensfest"),
+  );
+  assert.ok(
+    usCalendar.entries.some((entry) => entry.date === "2026-07-03" && entry.name === "Independence Day"),
+  );
+  assert.ok(
+    usCalendar.entries.some((entry) => entry.date === "2027-12-24" && entry.name === "Christmas Day"),
+  );
+});
+
+test("only includes city calendars for cities that exist in the database", () => {
+  const definitions = buildHolidayCalendarSeedDefinitions({
+    availableCountryCodes: ["DE", "ES"],
+    availableCitiesByCountry: {
+      DE: ["Berlin"],
+      ES: ["Madrid"],
+    },
+    activeGermanStates: ["BY"],
+    years: [2026, 2027],
+  });
+
+  assert.ok(definitions.some((definition) => definition.countryCode === "DE" && definition.scopeType === "STATE"));
+  assert.ok(definitions.some((definition) => definition.countryCode === "ES" && definition.scopeType === "CITY" && definition.cityName === "Madrid"));
+  assert.ok(!definitions.some((definition) => definition.countryCode === "ES" && definition.scopeType === "CITY" && definition.cityName === "Barcelona"));
+  assert.ok(!definitions.some((definition) => definition.countryCode === "US"));
+});
diff --git a/packages/db/src/holiday-calendar-seed-data.ts b/packages/db/src/holiday-calendar-seed-data.ts
new file mode 100644
index 0000000..7eb3868
--- /dev/null
+++ b/packages/db/src/holiday-calendar-seed-data.ts
@@ -0,0 +1,325 @@
+import { getPublicHolidays } from "@capakraken/shared";
+
+export type HolidayCalendarSeedScope = "COUNTRY" | "STATE" | "CITY";
+
+export type HolidayCalendarSeedEntry = {
+  date: string;
+  name: string;
+  isRecurringAnnual: boolean;
+};
+
+export type HolidayCalendarSeedDefinition = {
+  name: string;
+  scopeType: HolidayCalendarSeedScope;
+  countryCode: string;
+  stateCode?: string;
+  cityName?: string;
+  priority: number;
+  entries: HolidayCalendarSeedEntry[];
+};
+
+type SeedContext = {
+  availableCountryCodes: string[];
+  availableCitiesByCountry: Record<string, string[]>;
+  activeGermanStates?: string[];
+  years: number[];
+};
+
+type SimpleHolidayDefinition = {
+  name: string;
+  resolveDate: (year: number) => string;
+};
+
+const COUNTRY_PRIORITY = 10;
+const STATE_PRIORITY = 20;
+const CITY_PRIORITY = 30;
+
+function toIsoDate(date: Date): string {
+  return date.toISOString().slice(0, 10);
+}
+
+function dateUtc(year: number, month: number, day: number): Date {
+  return new Date(Date.UTC(year, month - 1, day));
+}
+
+function addDays(date: Date, amount: number): Date {
+  const next = new Date(date);
+  next.setUTCDate(next.getUTCDate() + amount);
+  return next;
+}
+
+function computeEasterSunday(year: number): Date {
+  const a = year % 19;
+  const b = Math.floor(year / 100);
+  const c = year % 100;
+  const d = Math.floor(b / 4);
+  const e = b % 4;
+  const f = Math.floor((b + 8) / 25);
+  const g = Math.floor((b - f + 1) / 3);
+  const h = (19 * a + b - d - g + 15) % 30;
+  const i = Math.floor(c / 4);
+  const k = c % 4;
+  const l = (32 + 2 * e + 2 * i - h - k) % 7;
+  const m = Math.floor((a + 11 * h + 22 * l) / 451);
+  const month = Math.floor((h + l - 7 * m + 114) / 31);
+  const day = ((h + l - 7 * m + 114) % 31) + 1;
+  return dateUtc(year, month, day);
+}
+
+function nthWeekdayOfMonth(year: number, month: number, weekday: number, occurrence: number): string {
+  const firstDay = dateUtc(year, month, 1);
+  const delta = (weekday - firstDay.getUTCDay() + 7) % 7;
+  const day = 1 + delta + ((occurrence - 1) * 7);
+  return toIsoDate(dateUtc(year, month, day));
+}
+
+function lastWeekdayOfMonth(year: number, month: number, weekday: number): string {
+  const lastDay = dateUtc(year, month + 1, 0);
+  const delta = (lastDay.getUTCDay() - weekday + 7) % 7;
+  lastDay.setUTCDate(lastDay.getUTCDate() - delta);
+  return toIsoDate(lastDay);
+}
+
+function observedUsFixedHoliday(year: number, month: number, day: number): string {
+  const holiday = dateUtc(year, month, day);
+  const weekday = holiday.getUTCDay();
+
+  if (weekday === 6) {
+    return toIsoDate(addDays(holiday, -1));
+  }
+  if (weekday === 0) {
+    return toIsoDate(addDays(holiday, 1));
+  }
+
+  return toIsoDate(holiday);
+}
+
+function buildEntries(years: number[], definitions: SimpleHolidayDefinition[]): HolidayCalendarSeedEntry[] {
+  const entries = new Map<string, HolidayCalendarSeedEntry>();
+
+  for (const year of years) {
+    for (const definition of definitions) {
+      const date = definition.resolveDate(year);
+      entries.set(date, {
+        date,
+        name: definition.name,
+        isRecurringAnnual: false,
+      });
+    }
+  }
+
+  return [...entries.values()].sort((left, right) => left.date.localeCompare(right.date));
+}
+
+function buildGermanCountryEntries(years: number[]): HolidayCalendarSeedEntry[] {
+  return buildEntries(
+    years,
+    years.flatMap((year) =>
+      getPublicHolidays(year)
+        .filter((holiday) => holiday.federal)
+        .map((holiday) => ({
+          name: holiday.name,
+          resolveDate: () => holiday.date,
+        })),
+    ),
+  );
+}
+
+function buildGermanStateEntries(years: number[], stateCode: string): HolidayCalendarSeedEntry[] {
+  return buildEntries(
+    years,
+    years.flatMap((year) =>
+      getPublicHolidays(year, stateCode)
+        .filter((holiday) => !holiday.federal)
+        .map((holiday) => ({
+          name: holiday.name,
+          resolveDate: () => holiday.date,
+        })),
+    ),
+  );
+}
+
+function buildSpanishCountryEntries(years: number[]): HolidayCalendarSeedEntry[] {
+  return buildEntries(years, [
+    { name: "Ano Nuevo", resolveDate: (year) => toIsoDate(dateUtc(year, 1, 1)) },
+    { name: "Epifania del Senor", resolveDate: (year) => toIsoDate(dateUtc(year, 1, 6)) },
+    { name: "Viernes Santo", resolveDate: (year) => toIsoDate(addDays(computeEasterSunday(year), -2)) },
+    { name: "Fiesta del Trabajo", resolveDate: (year) => toIsoDate(dateUtc(year, 5, 1)) },
+    { name: "Asuncion de la Virgen", resolveDate: (year) => toIsoDate(dateUtc(year, 8, 15)) },
+    { name: "Fiesta Nacional de Espana", resolveDate: (year) => toIsoDate(dateUtc(year, 10, 12)) },
+    { name: "Todos los Santos", resolveDate: (year) => toIsoDate(dateUtc(year, 11, 1)) },
+    { name: "Dia de la Constitucion", resolveDate: (year) => toIsoDate(dateUtc(year, 12, 6)) },
+    { name: "Inmaculada Concepcion", resolveDate: (year) => toIsoDate(dateUtc(year, 12, 8)) },
+    { name: "Navidad", resolveDate: (year) => toIsoDate(dateUtc(year, 12, 25)) },
+  ]);
+}
+
+function buildIndianCountryEntries(years: number[]): HolidayCalendarSeedEntry[] {
+  return buildEntries(years, [
+    { name: "Republic Day", resolveDate: (year) => toIsoDate(dateUtc(year, 1, 26)) },
+    { name: "Good Friday", resolveDate: (year) => toIsoDate(addDays(computeEasterSunday(year), -2)) },
+    { name: "Independence Day", resolveDate: (year) => toIsoDate(dateUtc(year, 8, 15)) },
+    { name: "Gandhi Jayanti", resolveDate: (year) => toIsoDate(dateUtc(year, 10, 2)) },
+  ]);
+}
+
+function buildUsCountryEntries(years: number[]): HolidayCalendarSeedEntry[] {
+  return buildEntries(years, [
+    { name: "New Year's Day", resolveDate: (year) => observedUsFixedHoliday(year, 1, 1) },
+    { name: "Martin Luther King Jr. Day", resolveDate: (year) => nthWeekdayOfMonth(year, 1, 1, 3) },
+    { name: "Memorial Day", resolveDate: (year) => lastWeekdayOfMonth(year, 5, 1) },
+    { name: "Independence Day", resolveDate: (year) => observedUsFixedHoliday(year, 7, 4) },
+    { name: "Labor Day", resolveDate: (year) => nthWeekdayOfMonth(year, 9, 1, 1) },
+    { name: "Thanksgiving Day", resolveDate: (year) => nthWeekdayOfMonth(year, 11, 4, 4) },
+    { name: "Christmas Day", resolveDate: (year) => observedUsFixedHoliday(year, 12, 25) },
+  ]);
+}
+
+function normalizeCountryCodes(countryCodes: string[]): Set<string> {
+  return new Set(countryCodes.map((countryCode) => countryCode.trim().toUpperCase()));
+}
+
+function normalizeCityLookup(availableCitiesByCountry: Record<string, string[]>): Map<string, Set<string>> {
+  const lookup = new Map<string, Set<string>>();
+
+  for (const [countryCode, cityNames] of Object.entries(availableCitiesByCountry)) {
+    lookup.set(countryCode.trim().toUpperCase(), new Set(cityNames));
+  }
+
+  return lookup;
+}
+
+function hasCity(cityLookup: Map<string, Set<string>>, countryCode: string, cityName: string): boolean {
+  return cityLookup.get(countryCode)?.has(cityName) ?? false;
+}
+
+function germanStateDisplayName(stateCode: string): string {
+  switch (stateCode) {
+    case "BW":
+      return "Baden-Wuerttemberg";
+    case "BY":
+      return "Bayern";
+    case "HH":
+      return "Hamburg";
+    case "NW":
+      return "Nordrhein-Westfalen";
+    default:
+      return stateCode;
+  }
+}
+
+function buildCityEntries(years: number[], definitions: SimpleHolidayDefinition[]): HolidayCalendarSeedEntry[] {
+  return buildEntries(years, definitions);
+}
+
+export function buildHolidayCalendarSeedDefinitions(
+  context: SeedContext,
+): HolidayCalendarSeedDefinition[] {
+  const availableCountries = normalizeCountryCodes(context.availableCountryCodes);
+  const cityLookup = normalizeCityLookup(context.availableCitiesByCountry);
+  const definitions: HolidayCalendarSeedDefinition[] = [];
+
+  if (availableCountries.has("DE")) {
+    definitions.push({
+      name: "Referenzfeiertage Deutschland 2026-2027",
+      scopeType: "COUNTRY",
+      countryCode: "DE",
+      priority: COUNTRY_PRIORITY,
+      entries: buildGermanCountryEntries(context.years),
+    });
+
+    const germanStates = new Set(
+      [...(context.activeGermanStates ?? []), "BY", "NW"]
+        .map((stateCode) => stateCode.trim().toUpperCase())
+        .filter((stateCode) => ["BW", "BY", "HH", "NW"].includes(stateCode)),
+    );
+
+    for (const stateCode of [...germanStates].sort()) {
+      const entries = buildGermanStateEntries(context.years, stateCode);
+      if (entries.length === 0) {
+        continue;
+      }
+      definitions.push({
+        name: `Referenzfeiertage Deutschland - ${germanStateDisplayName(stateCode)} 2026-2027`,
+        scopeType: "STATE",
+        countryCode: "DE",
+        stateCode,
+        priority: STATE_PRIORITY,
+        entries,
+      });
+    }
+
+    if (hasCity(cityLookup, "DE", "Augsburg")) {
+      definitions.push({
+        name: "Referenzfeiertage Deutschland - Augsburg 2026-2027",
+        scopeType: "CITY",
+        countryCode: "DE",
+        cityName: "Augsburg",
+        priority: CITY_PRIORITY,
+        entries: buildCityEntries(context.years, [
+          { name: "Augsburger Friedensfest", resolveDate: (year) => toIsoDate(dateUtc(year, 8, 8)) },
+        ]),
+      });
+    }
+  }
+
+  if (availableCountries.has("ES")) {
+    definitions.push({
+      name: "Referenzfeiertage Spanien 2026-2027",
+      scopeType: "COUNTRY",
+      countryCode: "ES",
+      priority: COUNTRY_PRIORITY,
+      entries: buildSpanishCountryEntries(context.years),
+    });
+
+    if (hasCity(cityLookup, "ES", "Madrid")) {
+      definitions.push({
+        name: "Referenzfeiertage Spanien - Madrid 2026-2027",
+        scopeType: "CITY",
+        countryCode: "ES",
+        cityName: "Madrid",
+        priority: CITY_PRIORITY,
+        entries: buildEntries(context.years, [
+          { name: "San Isidro", resolveDate: (year) => toIsoDate(dateUtc(year, 5, 15)) },
+          { name: "Nuestra Senora de la Almudena", resolveDate: (year) => toIsoDate(dateUtc(year, 11, 9)) },
+        ]),
+      });
+    }
+
+    if (hasCity(cityLookup, "ES", "Barcelona")) {
+      definitions.push({
+        name: "Referenzfeiertage Spanien - Barcelona 2026-2027",
+        scopeType: "CITY",
+        countryCode: "ES",
+        cityName: "Barcelona",
+        priority: CITY_PRIORITY,
+        entries: buildEntries(context.years, [
+          { name: "La Merce", resolveDate: (year) => toIsoDate(dateUtc(year, 9, 24)) },
+          { name: "Santa Eulalia", resolveDate: (year) => toIsoDate(dateUtc(year, 2, 12)) },
+        ]),
+      });
+    }
+  }
+
+  if (availableCountries.has("IN")) {
+    definitions.push({
+      name: "Referenzfeiertage Indien 2026-2027",
+      scopeType: "COUNTRY",
+      countryCode: "IN",
+      priority: COUNTRY_PRIORITY,
+      entries: buildIndianCountryEntries(context.years),
+    });
+  }
+
+  if (availableCountries.has("US")) {
+    definitions.push({
+      name: "Referenzfeiertage USA 2026-2027",
+      scopeType: "COUNTRY",
+      countryCode: "US",
+      priority: COUNTRY_PRIORITY,
+      entries: buildUsCountryEntries(context.years),
+    });
+  }
+
+  return definitions;
+}
diff --git a/packages/db/src/holiday-demo-profiles.test.ts b/packages/db/src/holiday-demo-profiles.test.ts
new file mode 100644
index 0000000..b3f2951
--- /dev/null
+++ b/packages/db/src/holiday-demo-profiles.test.ts
@@ -0,0 +1,30 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+import { getHolidayDemoCityNamesByCountry, getHolidayDemoProfileForIndex } from "./holiday-demo-profiles.js";
+
+test("getHolidayDemoProfileForIndex rotates across the demo holiday profiles", () => {
+  assert.deepEqual(getHolidayDemoProfileForIndex(0), {
+    countryCode: "DE",
+    stateCode: "BW",
+    cityName: "Stuttgart",
+  });
+  assert.deepEqual(getHolidayDemoProfileForIndex(5), {
+    countryCode: "DE",
+    stateCode: "BY",
+    cityName: "Augsburg",
+  });
+  assert.deepEqual(getHolidayDemoProfileForIndex(12), {
+    countryCode: "DE",
+    stateCode: "BW",
+    cityName: "Stuttgart",
+  });
+});
+
+test("getHolidayDemoCityNamesByCountry exposes the required demo cities", () => {
+  assert.deepEqual(getHolidayDemoCityNamesByCountry(), {
+    DE: ["Augsburg", "Berlin", "Hamburg", "Koeln", "Muenchen", "Stuttgart"],
+    ES: ["Barcelona", "Madrid"],
+    IN: ["Bangalore", "Mumbai"],
+    US: ["Los Angeles", "New York"],
+  });
+});
diff --git a/packages/db/src/holiday-demo-profiles.ts b/packages/db/src/holiday-demo-profiles.ts
new file mode 100644
index 0000000..5f978b6
--- /dev/null
+++ b/packages/db/src/holiday-demo-profiles.ts
@@ -0,0 +1,39 @@
+export type HolidayDemoProfile = {
+  countryCode: "DE" | "ES" | "IN" | "US";
+  stateCode: string | null;
+  cityName: string;
+};
+
+export const HOLIDAY_DEMO_PROFILES: HolidayDemoProfile[] = [
+  { countryCode: "DE", stateCode: "BW", cityName: "Stuttgart" },
+  { countryCode: "DE", stateCode: "BY", cityName: "Muenchen" },
+  { countryCode: "DE", stateCode: "NW", cityName: "Koeln" },
+  { countryCode: "DE", stateCode: "HH", cityName: "Hamburg" },
+  { countryCode: "DE", stateCode: "BE", cityName: "Berlin" },
+  { countryCode: "DE", stateCode: "BY", cityName: "Augsburg" },
+  { countryCode: "ES", stateCode: "MD", cityName: "Madrid" },
+  { countryCode: "ES", stateCode: "CT", cityName: "Barcelona" },
+  { countryCode: "IN", stateCode: "KA", cityName: "Bangalore" },
+  { countryCode: "IN", stateCode: "MH", cityName: "Mumbai" },
+  { countryCode: "US", stateCode: "CA", cityName: "Los Angeles" },
+  { countryCode: "US", stateCode: "NY", cityName: "New York" },
+];
+
+export function getHolidayDemoProfileForIndex(index: number): HolidayDemoProfile {
+  return HOLIDAY_DEMO_PROFILES[index % HOLIDAY_DEMO_PROFILES.length]!;
+}
+
+export function getHolidayDemoCityNamesByCountry() {
+  const grouped = new Map<string, Set<string>>();
+
+  for (const profile of HOLIDAY_DEMO_PROFILES) {
+    const cityNames = grouped.get(profile.countryCode) ?? new Set<string>();
+    cityNames.add(profile.cityName);
+    grouped.set(profile.countryCode, cityNames);
+  }
+
+  return Object.fromEntries(
+    [...grouped.entries()]
+      .map(([countryCode, cityNames]) => [countryCode, [...cityNames].sort()] as const),
+  ) as Record<HolidayDemoProfile["countryCode"], string[]>;
+}
diff --git a/packages/db/src/reset-dispo-import.ts b/packages/db/src/reset-dispo-import.ts
index 31386e3..43a724f 100644
--- a/packages/db/src/reset-dispo-import.ts
+++ b/packages/db/src/reset-dispo-import.ts
@@ -4,6 +4,7 @@ import { resolve } from "node:path";
 import { hash } from "@node-rs/argon2";
 import { SystemRole } from "@capakraken/shared";
 import { PrismaClient } from "@prisma/client";
+import { assertDestructiveDbAllowed } from "./destructive-db-guard.js";
 import { loadWorkspaceEnv, resolveWorkspacePath } from "./load-workspace-env.js";
 
 loadWorkspaceEnv();
@@ -143,6 +144,10 @@ async function bootstrapPlatform(adminEmail: string, adminPassword: string, admi
 
 async function main() {
   const options = parseArgs(process.argv.slice(2));
+  const target = assertDestructiveDbAllowed({
+    commandName: "db:reset:dispo",
+    allowedDatabaseNames: ["capakraken_test", "capakraken_e2e", "capakraken_ci"],
+  });
   const databaseUrl = process.env.DATABASE_URL;
 
   if (!options.force) {
@@ -153,6 +158,8 @@ async function main() {
     throw new Error("DATABASE_URL is not configured.");
   }
 
+  console.warn(`Resetting disposable database '${target.databaseName}'.`);
+
   let backupPath: string | null = null;
 
   if (options.skipBackup) {
diff --git a/packages/db/src/safe-destructive-env.ts b/packages/db/src/safe-destructive-env.ts
new file mode 100644
index 0000000..3e6db0e
--- /dev/null
+++ b/packages/db/src/safe-destructive-env.ts
@@ -0,0 +1,14 @@
+import { assertDestructiveDbAllowed } from "./destructive-db-guard.js";
+
+const TEST_DATABASE_NAMES = [
+  "capakraken_test",
+  "capakraken_e2e",
+  "capakraken_ci",
+];
+
+export function assertSafeSeedTarget(commandName: string) {
+  return assertDestructiveDbAllowed({
+    commandName,
+    allowedDatabaseNames: TEST_DATABASE_NAMES,
+  });
+}
diff --git a/packages/db/src/seed-dispo-v2.ts b/packages/db/src/seed-dispo-v2.ts
index 641d4e6..8296f1d 100644
--- a/packages/db/src/seed-dispo-v2.ts
+++ b/packages/db/src/seed-dispo-v2.ts
@@ -9,17 +9,22 @@ import {
   DISPO_UTILIZATION_CATEGORIES,
 } from "@capakraken/shared";
 import { PrismaClient } from "@prisma/client";
+import { loadWorkspaceEnv } from "./load-workspace-env.js";
+import { assertSafeSeedTarget } from "./safe-destructive-env.js";
+
+loadWorkspaceEnv();
 
 const prisma = new PrismaClient();
 
 async function main() {
+  assertSafeSeedTarget("db:seed:dispo-v2");
   console.log("Seeding Dispo v2 reference data...");
 
   // ─── Countries + Metro Cities ─────────────────────────────────────────────
 
   const countries = [
     { code: "CR", name: "Costa Rica", dailyWorkingHours: 8, cities: ["Costa Rica"] },
-    { code: "DE", name: "Germany", dailyWorkingHours: 8, cities: ["Bonn", "Frankfurt", "Hamburg", "Munich", "Stuttgart"] },
+    { code: "DE", name: "Germany", dailyWorkingHours: 8, cities: ["Augsburg", "Berlin", "Bonn", "Frankfurt", "Hamburg", "Koeln", "Muenchen", "Stuttgart"] },
     { code: "HU", name: "Hungary", dailyWorkingHours: 8, cities: ["Hungary"] },
     { code: "IN", name: "India", dailyWorkingHours: 9, cities: ["India"] },
     { code: "IT", name: "Italy", dailyWorkingHours: 8, cities: ["Italy"] },
diff --git a/packages/db/src/seed-holiday-calendars.ts b/packages/db/src/seed-holiday-calendars.ts
new file mode 100644
index 0000000..b3ef619
--- /dev/null
+++ b/packages/db/src/seed-holiday-calendars.ts
@@ -0,0 +1,205 @@
+import { PrismaClient, type HolidayCalendarEntry } from "@prisma/client";
+import { buildHolidayCalendarSeedDefinitions } from "./holiday-calendar-seed-data.js";
+import { loadWorkspaceEnv } from "./load-workspace-env.js";
+
+loadWorkspaceEnv();
+
+const prisma = new PrismaClient();
+
+const YEARS = [2026, 2027];
+const SEED_SOURCE = "seed:holiday-calendars:2026-2027";
+
+type ExistingCalendar = {
+  id: string;
+  entries: Pick<HolidayCalendarEntry, "id" | "date" | "source">[];
+};
+
+function toUtcDate(isoDate: string): Date {
+  return new Date(`${isoDate}T00:00:00.000Z`);
+}
+
+function dateKey(value: Date): string {
+  return value.toISOString().slice(0, 10);
+}
+
+async function findScopedCalendar(input: {
+  countryId: string;
+  scopeType: "COUNTRY" | "STATE" | "CITY";
+  stateCode?: string | undefined;
+  metroCityId?: string | undefined;
+}): Promise<ExistingCalendar | null> {
+  return prisma.holidayCalendar.findFirst({
+    where: {
+      countryId: input.countryId,
+      scopeType: input.scopeType,
+      stateCode: input.scopeType === "STATE" ? input.stateCode ?? null : null,
+      metroCityId: input.scopeType === "CITY" ? input.metroCityId ?? null : null,
+    },
+    select: {
+      id: true,
+      entries: {
+        select: {
+          id: true,
+          date: true,
+          source: true,
+        },
+      },
+    },
+  });
+}
+
+async function main() {
+  console.log("Seeding holiday calendars for 2026-2027...");
+
+  const countries = await prisma.country.findMany({
+    select: {
+      id: true,
+      code: true,
+      name: true,
+      metroCities: {
+        select: {
+          id: true,
+          name: true,
+        },
+      },
+    },
+    orderBy: { code: "asc" },
+  });
+
+  const activeGermanStatesRows = await prisma.resource.findMany({
+    where: {
+      isActive: true,
+      country: { code: "DE" },
+      federalState: { not: null },
+    },
+    select: { federalState: true },
+    distinct: ["federalState"],
+  });
+
+  const definitions = buildHolidayCalendarSeedDefinitions({
+    availableCountryCodes: countries.map((country) => country.code),
+    availableCitiesByCountry: Object.fromEntries(
+      countries.map((country) => [
+        country.code,
+        country.metroCities.map((city) => city.name),
+      ]),
+    ),
+    activeGermanStates: activeGermanStatesRows
+      .map((row) => row.federalState)
+      .filter((stateCode): stateCode is string => Boolean(stateCode)),
+    years: YEARS,
+  });
+
+  const countryByCode = new Map(countries.map((country) => [country.code, country]));
+  const cityByCountryAndName = new Map(
+    countries.flatMap((country) =>
+      country.metroCities.map((city) => [`${country.code}:${city.name}`, city] as const),
+    ),
+  );
+
+  let createdCalendars = 0;
+  let reusedCalendars = 0;
+  let createdEntries = 0;
+  let updatedEntries = 0;
+  let skippedManualEntries = 0;
+
+  for (const definition of definitions) {
+    const country = countryByCode.get(definition.countryCode);
+    if (!country) {
+      continue;
+    }
+
+    const metroCity = definition.cityName
+      ? cityByCountryAndName.get(`${definition.countryCode}:${definition.cityName}`)
+      : null;
+
+    if (definition.scopeType === "CITY" && !metroCity) {
+      console.warn(
+        `Skipping city calendar ${definition.name}: city ${definition.cityName ?? "?"} not found.`,
+      );
+      continue;
+    }
+
+    let calendar = await findScopedCalendar({
+      countryId: country.id,
+      scopeType: definition.scopeType,
+      stateCode: definition.stateCode,
+      metroCityId: metroCity?.id,
+    });
+
+    if (!calendar) {
+      calendar = await prisma.holidayCalendar.create({
+        data: {
+          name: definition.name,
+          scopeType: definition.scopeType,
+          countryId: country.id,
+          stateCode: definition.scopeType === "STATE" ? definition.stateCode ?? null : null,
+          metroCityId: definition.scopeType === "CITY" ? metroCity?.id ?? null : null,
+          priority: definition.priority,
+          isActive: true,
+        },
+        select: {
+          id: true,
+          entries: {
+            select: {
+              id: true,
+              date: true,
+              source: true,
+            },
+          },
+        },
+      });
+      createdCalendars += 1;
+    } else {
+      reusedCalendars += 1;
+    }
+
+    const entriesByDate = new Map(calendar.entries.map((entry) => [dateKey(entry.date), entry]));
+
+    for (const entry of definition.entries) {
+      const existingEntry = entriesByDate.get(entry.date);
+
+      if (!existingEntry) {
+        await prisma.holidayCalendarEntry.create({
+          data: {
+            holidayCalendarId: calendar.id,
+            date: toUtcDate(entry.date),
+            name: entry.name,
+            isRecurringAnnual: entry.isRecurringAnnual,
+            source: SEED_SOURCE,
+          },
+        });
+        createdEntries += 1;
+        continue;
+      }
+
+      if (existingEntry.source && existingEntry.source !== SEED_SOURCE) {
+        skippedManualEntries += 1;
+        continue;
+      }
+
+      await prisma.holidayCalendarEntry.update({
+        where: { id: existingEntry.id },
+        data: {
+          name: entry.name,
+          isRecurringAnnual: entry.isRecurringAnnual,
+          source: SEED_SOURCE,
+        },
+      });
+      updatedEntries += 1;
+    }
+  }
+
+  console.log(`  calendars created: ${createdCalendars}`);
+  console.log(`  calendars reused: ${reusedCalendars}`);
+  console.log(`  entries created: ${createdEntries}`);
+  console.log(`  entries updated: ${updatedEntries}`);
+  console.log(`  manual entries preserved: ${skippedManualEntries}`);
+}
+
+main()
+  .catch((error) => {
+    console.error(error);
+    process.exit(1);
+  })
+  .finally(() => prisma.$disconnect());
diff --git a/packages/db/src/seed-holiday-demo-resources.ts b/packages/db/src/seed-holiday-demo-resources.ts
new file mode 100644
index 0000000..43a6436
--- /dev/null
+++ b/packages/db/src/seed-holiday-demo-resources.ts
@@ -0,0 +1,125 @@
+import { PrismaClient, type Prisma } from "@prisma/client";
+import { getHolidayDemoCityNamesByCountry, getHolidayDemoProfileForIndex } from "./holiday-demo-profiles.js";
+import { loadWorkspaceEnv } from "./load-workspace-env.js";
+
+loadWorkspaceEnv();
+
+const prisma = new PrismaClient();
+
+type CountryRecord = {
+  id: string;
+  code: string;
+};
+
+function asJsonObject(value: Prisma.JsonValue | null | undefined): Record<string, Prisma.JsonValue> {
+  if (!value || typeof value !== "object" || Array.isArray(value)) {
+    return {};
+  }
+
+  return value as Record<string, Prisma.JsonValue>;
+}
+
+async function ensureCities(countryByCode: Map<string, CountryRecord>) {
+  const cityNamesByCountry = getHolidayDemoCityNamesByCountry();
+  const cityMap = new Map<string, { id: string }>();
+
+  for (const [countryCode, cityNames] of Object.entries(cityNamesByCountry)) {
+    const country = countryByCode.get(countryCode);
+    if (!country) {
+      continue;
+    }
+
+    for (const cityName of cityNames) {
+      const city = await prisma.metroCity.upsert({
+        where: {
+          countryId_name: {
+            countryId: country.id,
+            name: cityName,
+          },
+        },
+        update: {},
+        create: {
+          countryId: country.id,
+          name: cityName,
+        },
+        select: { id: true },
+      });
+      cityMap.set(`${countryCode}:${cityName}`, city);
+    }
+  }
+
+  return cityMap;
+}
+
+async function main() {
+  console.log("Normalizing active resources for holiday demo profiles...");
+
+  const countrySeeds = [
+    { code: "DE", name: "Germany", dailyWorkingHours: 8 },
+    { code: "ES", name: "Spain", dailyWorkingHours: 8 },
+    { code: "IN", name: "India", dailyWorkingHours: 9 },
+    { code: "US", name: "United States", dailyWorkingHours: 8 },
+  ] as const;
+  const countries = [];
+
+  for (const countrySeed of countrySeeds) {
+    countries.push(await prisma.country.upsert({
+      where: { code: countrySeed.code },
+      update: { name: countrySeed.name, dailyWorkingHours: countrySeed.dailyWorkingHours },
+      create: countrySeed,
+      select: { id: true, code: true },
+    }));
+  }
+
+  const countryByCode = new Map(countries.map((country) => [country.code, country] as const));
+
+  const cityByProfile = await ensureCities(countryByCode);
+  const resources = await prisma.resource.findMany({
+    where: { isActive: true },
+    select: {
+      id: true,
+      eid: true,
+      dynamicFields: true,
+    },
+    orderBy: { eid: "asc" },
+  });
+
+  let updated = 0;
+
+  for (const [index, resource] of resources.entries()) {
+    const profile = getHolidayDemoProfileForIndex(index);
+    const country = countryByCode.get(profile.countryCode)!;
+    const metroCity = cityByProfile.get(`${profile.countryCode}:${profile.cityName}`);
+
+    if (!metroCity) {
+      throw new Error(`Missing metro city for profile ${profile.countryCode}/${profile.cityName}`);
+    }
+
+    const dynamicFields = asJsonObject(resource.dynamicFields);
+
+    await prisma.resource.update({
+      where: { id: resource.id },
+      data: {
+        countryId: country.id,
+        metroCityId: metroCity.id,
+        federalState: profile.stateCode,
+        dynamicFields: {
+          ...dynamicFields,
+          city: profile.cityName,
+          holidayCountryCode: profile.countryCode,
+          holidayStateCode: profile.stateCode,
+        } as Prisma.InputJsonValue,
+      },
+    });
+    updated += 1;
+  }
+
+  console.log(`Updated ${updated} active resources.`);
+}
+
+main()
+  .catch((error) => {
+    console.error(error);
+    process.exit(1);
+  })
+  .finally(() => void prisma.$disconnect());
diff --git a/packages/db/src/seed-vacations.ts b/packages/db/src/seed-vacations.ts
index 1aa6ff4..3376443 100644
--- a/packages/db/src/seed-vacations.ts
+++ b/packages/db/src/seed-vacations.ts
@@ -8,6 +8,10 @@
  */
 
 import { PrismaClient } from "@prisma/client";
+import { loadWorkspaceEnv } from "./load-workspace-env.js";
+import { assertSafeSeedTarget } from "./safe-destructive-env.js";
+
+loadWorkspaceEnv();
 
 const prisma = new PrismaClient();
 
@@ -75,6 +79,7 @@ const YEARS = [2025, 2026, 2027];
 // ─── Main ─────────────────────────────────────────────────────────────────────
 
 async function main() {
+  assertSafeSeedTarget("db:seed:vacations");
   // Get admin user to act as approver (fall back to manager, then any user)
   const admin =
     (await prisma.user.findFirst({ where: { systemRole: "ADMIN" }, select: { id: true } })) ??
diff --git a/packages/db/src/seed.ts b/packages/db/src/seed.ts
index f4e7cff..5fd0f7d 100644
--- a/packages/db/src/seed.ts
+++ b/packages/db/src/seed.ts
@@ -12,6 +12,11 @@ import {
 } from "@capakraken/shared";
 import { PrismaClient, type Prisma, type Resource, type Project } from "@prisma/client";
 import { hash } from "@node-rs/argon2";
+import { getHolidayDemoProfileForIndex } from "./holiday-demo-profiles.js";
+import { loadWorkspaceEnv } from "./load-workspace-env.js";
+import { assertSafeSeedTarget } from "./safe-destructive-env.js";
+
+loadWorkspaceEnv();
 
 const prisma = new PrismaClient();
 
@@ -273,10 +278,11 @@ function parseAllocationType(s: string): AllocationType {
 // ─── Main ──────────────────────────────────────────────────────────────────────
 
 async function main() {
-  console.warn("Seeding Planarchy with 3D studio example data...");
+  const target = assertSafeSeedTarget("db:seed");
+  console.warn(`Seeding CapaKraken example data into ${target.databaseName} (${target.hostname}${target.port ? `:${target.port}` : ""})...`);
 
   // ── 1. Delete all data (keep users) ────────────────────────────────────────
-  console.warn("Deleting existing data...");
+  console.warn(`Deleting existing data from disposable seed target '${target.databaseName}'...`);
   await prisma.auditLog.deleteMany({});
   await prisma.notification.deleteMany({});
   // Estimates (deep hierarchy)
@@ -362,7 +368,7 @@ async function main() {
 
   const cityMap = new Map<string, string>(); // cityName → id
   for (const [countryId, cities] of [
-    [countryDE.id, ["Stuttgart", "Hamburg", "Muenchen", "Berlin"]],
+    [countryDE.id, ["Augsburg", "Berlin", "Hamburg", "Koeln", "Muenchen", "Stuttgart"]],
     [countryIN.id, ["Bangalore", "Mumbai"]],
     [countryES.id, ["Madrid", "Barcelona"]],
     [countryUS.id, ["New York", "Los Angeles"]],
@@ -871,8 +877,16 @@ async function main() {
   // ── 5. Create resources ────────────────────────────────────────────────────
   const resourceMap = new Map<string, Resource>();
 
-  for (const row of RESOURCE_DATA) {
-    const [eid, chapter, typeOfWork, clientUnit, city, employeeType, lcr, ucr, fraction, availDays, chargeability] = row;
+  const countryIdByCode = new Map<string, string>([
+    ["DE", countryDE.id],
+    ["ES", countryES.id],
+    ["IN", countryIN.id],
+    ["US", countryUS.id],
+  ]);
+
+  for (const [index, row] of RESOURCE_DATA.entries()) {
+    const [eid, chapter, typeOfWork, clientUnit, , employeeType, lcr, ucr, fraction, availDays, chargeability] = row;
+    const holidayProfile = getHolidayDemoProfileForIndex(index);
 
     const displayName = eid
       .split(".")
@@ -886,8 +900,8 @@ async function main() {
     const skills       = computeSkills(chapter, typeOfWork, lcr);
 
     // Dispo v2: resolve FKs
-    const resCountryId = countryDE.id; // all seed resources are Germany
-    const resMetroCityId = cityMap.get(city) ?? null;
+    const resCountryId = countryIdByCode.get(holidayProfile.countryCode) ?? countryDE.id;
+    const resMetroCityId = cityMap.get(holidayProfile.cityName) ?? null;
 
     // chapter → orgUnit mapping
     const chapterToOrgUnit: Record<string, string> = {
@@ -943,9 +957,17 @@ async function main() {
         chargeabilityTarget: chargeability * 100,
         availability: availability as unknown as Prisma.InputJsonValue,
         skills: skills as unknown as Prisma.InputJsonValue,
-        dynamicFields: { clientUnit, workType: typeOfWork, city, employeeType },
+        dynamicFields: {
+          clientUnit,
+          workType: typeOfWork,
+          city: holidayProfile.cityName,
+          employeeType,
+          holidayCountryCode: holidayProfile.countryCode,
+          holidayStateCode: holidayProfile.stateCode,
+        },
         blueprintId: resourceBlueprint.id,
         countryId: resCountryId,
+        federalState: holidayProfile.stateCode,
         ...(resMetroCityId ? { metroCityId: resMetroCityId } : {}),
         ...(resOrgUnitId ? { orgUnitId: resOrgUnitId } : {}),
         ...(resMgmtGroupId ? { managementLevelGroupId: resMgmtGroupId } : {}),
@@ -1037,7 +1059,7 @@ async function main() {
     hoursPerDay: number;
     percentage: number;
     headcount: number;
-    status: string;
+    status: AllocationStatus;
   }
 
   const DEMAND_SEEDS: DemandSeed[] = [
@@ -1092,7 +1114,7 @@ async function main() {
     end: string;
     hoursPerDay: number;
     percentage: number;
-    status: string;
+    status: AllocationStatus;
   }
 
   const ASSIGNMENT_SEEDS: AssignmentSeed[] = [
diff --git a/packages/engine/src/__tests__/recurrence.test.ts b/packages/engine/src/__tests__/recurrence.test.ts
index a8cea53..e210a80 100644
--- a/packages/engine/src/__tests__/recurrence.test.ts
+++ b/packages/engine/src/__tests__/recurrence.test.ts
@@ -113,7 +113,7 @@ describe("getRecurringHoursForDay", () => {
   it("returns 0 before pattern startDate", () => {
     const patternWithStart: RecurrencePattern = {
       ...weeklyPattern,
-      startDate: new Date("2026-03-16"),
+      startDate: "2026-03-16",
     };
     expect(getRecurringHoursForDay(monday, patternWithStart, 8, allocationStart)).toBe(0);
   });
@@ -121,7 +121,7 @@ describe("getRecurringHoursForDay", () => {
   it("returns 0 after pattern endDate", () => {
     const patternWithEnd: RecurrencePattern = {
       ...weeklyPattern,
-      endDate: new Date("2026-03-08"),
+      endDate: "2026-03-08",
     };
     expect(getRecurringHoursForDay(monday, patternWithEnd, 8, allocationStart)).toBe(0);
   });
@@ -129,8 +129,8 @@ describe("getRecurringHoursForDay", () => {
   it("returns hours within pattern date bounds", () => {
     const bounded: RecurrencePattern = {
       ...weeklyPattern,
-      startDate: new Date("2026-03-01"),
-      endDate: new Date("2026-03-31"),
+      startDate: "2026-03-01",
+      endDate: "2026-03-31",
     };
     expect(getRecurringHoursForDay(monday, bounded, 8, allocationStart)).toBe(8);
   });
diff --git a/packages/engine/src/__tests__/shoring-ratio.test.ts b/packages/engine/src/__tests__/shoring-ratio.test.ts
index 71a158e..ac03934 100644
--- a/packages/engine/src/__tests__/shoring-ratio.test.ts
+++ b/packages/engine/src/__tests__/shoring-ratio.test.ts
@@ -85,12 +85,12 @@ describe("calculateShoringRatio", () => {
       make("r3", "ES", 4, 10),
       make("r4", "IN", 8, 10),
     ]);
-    expect(r.byCountry["DE"].resourceCount).toBe(1);
-    expect(r.byCountry["ES"].resourceCount).toBe(2);
-    expect(r.byCountry["IN"].resourceCount).toBe(1);
-    expect(r.byCountry["DE"].hours).toBe(80);
-    expect(r.byCountry["ES"].hours).toBe(120);
-    expect(r.byCountry["IN"].hours).toBe(80);
+    expect(r.byCountry["DE"]!.resourceCount).toBe(1);
+    expect(r.byCountry["ES"]!.resourceCount).toBe(2);
+    expect(r.byCountry["IN"]!.resourceCount).toBe(1);
+    expect(r.byCountry["DE"]!.hours).toBe(80);
+    expect(r.byCountry["ES"]!.hours).toBe(120);
+    expect(r.byCountry["IN"]!.hours).toBe(80);
   });
 
   it("exactly at threshold is above", () => {
diff --git a/packages/shared/src/__tests__/dashboard-layout.test.ts b/packages/shared/src/__tests__/dashboard-layout.test.ts
index 5b9b2b0..e6aabe5 100644
--- a/packages/shared/src/__tests__/dashboard-layout.test.ts
+++ b/packages/shared/src/__tests__/dashboard-layout.test.ts
@@ -44,9 +44,10 @@ describe("dashboard layout normalization", () => {
 
     expect(layout.version).toBe(DASHBOARD_LAYOUT_VERSION);
     expect(layout.widgets).toHaveLength(2);
-    expect(layout.widgets[0]?.config).toEqual({});
+    expect(layout.widgets[0]?.config).toEqual({ showDetails: false });
     expect(layout.widgets[1]?.y).toBe(3);
     expect(layout.widgets[1]?.config).toEqual({
+      showDetails: false,
       granularity: "week",
       groupBy: "chapter",
     });
diff --git a/packages/shared/src/schemas/dashboard.schema.ts b/packages/shared/src/schemas/dashboard.schema.ts
index ef8ffc4..2caebfe 100644
--- a/packages/shared/src/schemas/dashboard.schema.ts
+++ b/packages/shared/src/schemas/dashboard.schema.ts
@@ -36,40 +36,44 @@ function clamp(value: number, min: number, max: number): number {
 
 const dashboardWidgetTypeSchema = z.enum(DASHBOARD_WIDGET_TYPES);
 
-const resourceTableWidgetConfigSchema = z.object({
+const widgetChromeConfigSchema = z.object({
+  showDetails: z.boolean().optional(),
+});
+
+const resourceTableWidgetConfigSchema = widgetChromeConfigSchema.extend({
   chapter: z.preprocess(toNonEmptyString, z.string().optional()),
 });
 
-const projectTableWidgetConfigSchema = z.object({
+const projectTableWidgetConfigSchema = widgetChromeConfigSchema.extend({
   search: z.preprocess(toNonEmptyString, z.string().optional()),
   status: z.nativeEnum(ProjectStatus).optional(),
 });
 
-const peakTimesWidgetConfigSchema = z.object({
+const peakTimesWidgetConfigSchema = widgetChromeConfigSchema.extend({
   granularity: z.enum(["week", "month"]).optional(),
   groupBy: z.enum(["project", "chapter", "resource"]).optional(),
 });
 
-const demandWidgetConfigSchema = z.object({
+const demandWidgetConfigSchema = widgetChromeConfigSchema.extend({
   groupBy: z.enum(["project", "person", "chapter"]).optional(),
 });
 
-const topValueWidgetConfigSchema = z.object({
+const topValueWidgetConfigSchema = widgetChromeConfigSchema.extend({
   limit: z.number().int().min(1).max(100).optional(),
 });
 
-const chargeabilityWidgetConfigSchema = z.object({
+const chargeabilityWidgetConfigSchema = widgetChromeConfigSchema.extend({
   topN: z.number().int().min(1).max(100).optional(),
   watchlistThreshold: z.number().int().min(0).max(100).optional(),
 });
 
-const myProjectsWidgetConfigSchema = z.object({
+const myProjectsWidgetConfigSchema = widgetChromeConfigSchema.extend({
   showFavorites: z.boolean().optional(),
   showResponsible: z.boolean().optional(),
 });
 
 export const dashboardWidgetConfigSchemas = {
-  "stat-cards": z.object({}),
+  "stat-cards": widgetChromeConfigSchema,
   "resource-table": resourceTableWidgetConfigSchema,
   "project-table": projectTableWidgetConfigSchema,
   "peak-times-chart": peakTimesWidgetConfigSchema,
@@ -77,9 +81,9 @@ export const dashboardWidgetConfigSchemas = {
   "top-value-resources": topValueWidgetConfigSchema,
   "chargeability-overview": chargeabilityWidgetConfigSchema,
   "my-projects": myProjectsWidgetConfigSchema,
-  "budget-forecast": z.object({}),
-  "skill-gap": z.object({}),
-  "project-health": z.object({}),
+  "budget-forecast": widgetChromeConfigSchema,
+  "skill-gap": widgetChromeConfigSchema,
+  "project-health": widgetChromeConfigSchema,
 } as const;
 
 type DashboardWidgetConfigSchemaMap = typeof dashboardWidgetConfigSchemas;
diff --git a/packages/shared/src/schemas/holiday-calendar.schema.ts b/packages/shared/src/schemas/holiday-calendar.schema.ts
new file mode 100644
index 0000000..134a27c
--- /dev/null
+++ b/packages/shared/src/schemas/holiday-calendar.schema.ts
@@ -0,0 +1,50 @@
+import { z } from "zod";
+
+export const HolidayCalendarScopeSchema = z.enum(["COUNTRY", "STATE", "CITY"]);
+
+export const CreateHolidayCalendarSchema = z.object({
+  name: z.string().min(1).max(120),
+  scopeType: HolidayCalendarScopeSchema,
+  countryId: z.string(),
+  stateCode: z.string().trim().min(1).max(16).optional(),
+  metroCityId: z.string().optional(),
+  isActive: z.boolean().optional(),
+  priority: z.number().int().min(-100).max(100).optional(),
+});
+
+export const UpdateHolidayCalendarSchema = z.object({
+  name: z.string().min(1).max(120).optional(),
+  stateCode: z.string().trim().min(1).max(16).nullable().optional(),
+  metroCityId: z.string().nullable().optional(),
+  isActive: z.boolean().optional(),
+  priority: z.number().int().min(-100).max(100).optional(),
+});
+
+export const CreateHolidayCalendarEntrySchema = z.object({
+  holidayCalendarId: z.string(),
+  date: z.coerce.date(),
+  name: z.string().min(1).max(120),
+  isRecurringAnnual: z.boolean().optional(),
+  source: z.string().max(120).optional(),
+});
+
+export const UpdateHolidayCalendarEntrySchema = z.object({
+  date: z.coerce.date().optional(),
+  name: z.string().min(1).max(120).optional(),
+  isRecurringAnnual: z.boolean().optional(),
+  source: z.string().max(120).nullable().optional(),
+});
+
+export const PreviewResolvedHolidaysSchema = z.object({
+  countryId: z.string(),
+  stateCode: z.string().trim().min(1).max(16).optional(),
+  metroCityId: z.string().optional(),
+  year: z.number().int().min(2000).max(2100),
+});
+
+export type HolidayCalendarScopeInput = z.infer<typeof HolidayCalendarScopeSchema>;
+export type CreateHolidayCalendarInput = z.infer<typeof CreateHolidayCalendarSchema>;
+export type UpdateHolidayCalendarInput = z.infer<typeof UpdateHolidayCalendarSchema>;
+export type CreateHolidayCalendarEntryInput = z.infer<typeof CreateHolidayCalendarEntrySchema>;
+export type UpdateHolidayCalendarEntryInput = z.infer<typeof UpdateHolidayCalendarEntrySchema>;
+export type PreviewResolvedHolidaysInput = z.infer<typeof PreviewResolvedHolidaysSchema>;
diff --git a/packages/shared/src/schemas/index.ts b/packages/shared/src/schemas/index.ts
index 1064af0..63797fc 100644
--- a/packages/shared/src/schemas/index.ts
+++ b/packages/shared/src/schemas/index.ts
@@ -7,6 +7,7 @@ export * from "./role.schema.js";
 export * from "./dashboard.schema.js";
 export * from "./estimate.schema.js";
 export * from "./country.schema.js";
+export * from "./holiday-calendar.schema.js";
 export * from "./org-unit.schema.js";
 export * from "./utilization-category.schema.js";
 export * from "./client.schema.js";
diff --git a/packages/shared/src/types/dashboard.ts b/packages/shared/src/types/dashboard.ts
index 71da67f..7a3f2cc 100644
--- a/packages/shared/src/types/dashboard.ts
+++ b/packages/shared/src/types/dashboard.ts
@@ -8,45 +8,49 @@ export interface DashboardWidgetSize {
   h: number;
 }
 
-export interface StatCardsWidgetConfig {}
+export interface DashboardWidgetBaseConfig {
+  showDetails?: boolean;
+}
 
-export interface ResourceTableWidgetConfig {
+export interface StatCardsWidgetConfig extends DashboardWidgetBaseConfig {}
+
+export interface ResourceTableWidgetConfig extends DashboardWidgetBaseConfig {
   chapter?: string;
 }
 
-export interface ProjectTableWidgetConfig {
+export interface ProjectTableWidgetConfig extends DashboardWidgetBaseConfig {
   search?: string;
   status?: ProjectStatus;
 }
 
-export interface PeakTimesWidgetConfig {
+export interface PeakTimesWidgetConfig extends DashboardWidgetBaseConfig {
   granularity?: "week" | "month";
   groupBy?: "project" | "chapter" | "resource";
 }
 
-export interface DemandWidgetConfig {
+export interface DemandWidgetConfig extends DashboardWidgetBaseConfig {
   groupBy?: "project" | "person" | "chapter";
 }
 
-export interface TopValueResourcesWidgetConfig {
+export interface TopValueResourcesWidgetConfig extends DashboardWidgetBaseConfig {
   limit?: number;
 }
 
-export interface ChargeabilityOverviewWidgetConfig {
+export interface ChargeabilityOverviewWidgetConfig extends DashboardWidgetBaseConfig {
   topN?: number;
   watchlistThreshold?: number;
 }
 
-export interface MyProjectsWidgetConfig {
+export interface MyProjectsWidgetConfig extends DashboardWidgetBaseConfig {
   showFavorites?: boolean;
   showResponsible?: boolean;
 }
 
-export interface BudgetForecastWidgetConfig {}
+export interface BudgetForecastWidgetConfig extends DashboardWidgetBaseConfig {}
 
-export interface SkillGapWidgetConfig {}
+export interface SkillGapWidgetConfig extends DashboardWidgetBaseConfig {}
 
-export interface ProjectHealthWidgetConfig {}
+export interface ProjectHealthWidgetConfig extends DashboardWidgetBaseConfig {}
 
 export interface DashboardWidgetConfigMap {
   "stat-cards": StatCardsWidgetConfig;
@@ -116,7 +120,7 @@ export const DASHBOARD_WIDGET_CATALOG = [
     icon: "📊",
     defaultSize: { w: 12, h: 3 },
     minSize: { w: 6, h: 2 },
-    defaultConfig: {},
+    defaultConfig: { showDetails: false },
   },
   {
     type: "resource-table",
@@ -125,7 +129,7 @@ export const DASHBOARD_WIDGET_CATALOG = [
     icon: "👥",
     defaultSize: { w: 8, h: 6 },
     minSize: { w: 4, h: 4 },
-    defaultConfig: {},
+    defaultConfig: { showDetails: false },
   },
   {
     type: "project-table",
@@ -134,7 +138,7 @@ export const DASHBOARD_WIDGET_CATALOG = [
     icon: "📋",
     defaultSize: { w: 8, h: 6 },
     minSize: { w: 4, h: 4 },
-    defaultConfig: {},
+    defaultConfig: { showDetails: false },
   },
   {
     type: "peak-times-chart",
@@ -144,6 +148,7 @@ export const DASHBOARD_WIDGET_CATALOG = [
     defaultSize: { w: 8, h: 5 },
     minSize: { w: 4, h: 4 },
     defaultConfig: {
+      showDetails: false,
       granularity: "month",
       groupBy: "project",
     },
@@ -156,6 +161,7 @@ export const DASHBOARD_WIDGET_CATALOG = [
     defaultSize: { w: 6, h: 5 },
     minSize: { w: 4, h: 4 },
     defaultConfig: {
+      showDetails: false,
       groupBy: "project",
     },
   },
@@ -167,6 +173,7 @@ export const DASHBOARD_WIDGET_CATALOG = [
     defaultSize: { w: 6, h: 5 },
     minSize: { w: 4, h: 4 },
     defaultConfig: {
+      showDetails: false,
       limit: 10,
     },
   },
@@ -178,6 +185,7 @@ export const DASHBOARD_WIDGET_CATALOG = [
     defaultSize: { w: 6, h: 8 },
     minSize: { w: 4, h: 6 },
     defaultConfig: {
+      showDetails: false,
       topN: 10,
       watchlistThreshold: 15,
     },
@@ -190,6 +198,7 @@ export const DASHBOARD_WIDGET_CATALOG = [
     defaultSize: { w: 6, h: 6 },
     minSize: { w: 4, h: 3 },
     defaultConfig: {
+      showDetails: false,
       showFavorites: true,
       showResponsible: true,
     },
@@ -201,7 +210,7 @@ export const DASHBOARD_WIDGET_CATALOG = [
     icon: "💰",
     defaultSize: { w: 6, h: 5 },
     minSize: { w: 4, h: 4 },
-    defaultConfig: {},
+    defaultConfig: { showDetails: false },
   },
   {
     type: "skill-gap",
@@ -210,7 +219,7 @@ export const DASHBOARD_WIDGET_CATALOG = [
     icon: "🎯",
     defaultSize: { w: 6, h: 5 },
     minSize: { w: 4, h: 4 },
-    defaultConfig: {},
+    defaultConfig: { showDetails: false },
   },
   {
     type: "project-health",
@@ -219,6 +228,6 @@ export const DASHBOARD_WIDGET_CATALOG = [
     icon: "🏥",
     defaultSize: { w: 6, h: 5 },
     minSize: { w: 4, h: 4 },
-    defaultConfig: {},
+    defaultConfig: { showDetails: false },
   },
 ] as const satisfies readonly DashboardWidgetCatalogEntry[];
diff --git a/packages/shared/src/types/permissions.ts b/packages/shared/src/types/permissions.ts
index ba4c587..00737dc 100644
--- a/packages/shared/src/types/permissions.ts
+++ b/packages/shared/src/types/permissions.ts
@@ -2,6 +2,7 @@ import { SystemRole } from "./enums.js";
 
 export const PermissionKey = {
   VIEW_COSTS: "viewCosts",
+  USE_ASSISTANT_ADVANCED_TOOLS: "useAssistantAdvancedTools",
   EXPORT_DATA: "exportData",
   IMPORT_DATA: "importData",
   APPROVE_VACATIONS: "approveVacations",
diff --git a/packages/staffing/src/__tests__/capacity-analyzer.test.ts b/packages/staffing/src/__tests__/capacity-analyzer.test.ts
index 0861d4a..b9ca528 100644
--- a/packages/staffing/src/__tests__/capacity-analyzer.test.ts
+++ b/packages/staffing/src/__tests__/capacity-analyzer.test.ts
@@ -1,3 +1,4 @@
+import { AllocationStatus } from "@capakraken/shared";
 import { describe, expect, it } from "vitest";
 import { analyzeUtilization, findCapacityWindows } from "../capacity-analyzer.js";
 import type { CapacityAnalysisInput } from "../capacity-analyzer.js";
@@ -28,7 +29,7 @@ describe("analyzeUtilization", () => {
           startDate: new Date("2026-03-09"), // Monday
           endDate: new Date("2026-03-13"), // Friday
           hoursPerDay: 8,
-          status: "CONFIRMED",
+          status: AllocationStatus.CONFIRMED,
           projectName: "Project A",
           isChargeable: true,
         },
@@ -53,7 +54,7 @@ describe("analyzeUtilization", () => {
           startDate: new Date("2026-03-09"),
           endDate: new Date("2026-03-09"),
           hoursPerDay: 5,
-          status: "CONFIRMED",
+          status: AllocationStatus.CONFIRMED,
           projectName: "A",
           isChargeable: true,
         },
@@ -61,7 +62,7 @@ describe("analyzeUtilization", () => {
           startDate: new Date("2026-03-09"),
           endDate: new Date("2026-03-09"),
           hoursPerDay: 5,
-          status: "CONFIRMED",
+          status: AllocationStatus.CONFIRMED,
           projectName: "B",
           isChargeable: true,
         },
@@ -82,7 +83,7 @@ describe("analyzeUtilization", () => {
           startDate: new Date("2026-03-09"),
           endDate: new Date("2026-03-09"),
           hoursPerDay: 2,
-          status: "CONFIRMED",
+          status: AllocationStatus.CONFIRMED,
           projectName: "A",
           isChargeable: true,
         },
@@ -103,7 +104,7 @@ describe("analyzeUtilization", () => {
           startDate: new Date("2026-03-09"),
           endDate: new Date("2026-03-13"),
           hoursPerDay: 8,
-          status: "CANCELLED",
+          status: AllocationStatus.CANCELLED,
           projectName: "Cancelled",
           isChargeable: true,
         },
@@ -125,7 +126,7 @@ describe("analyzeUtilization", () => {
           startDate: new Date("2026-03-09"),
           endDate: new Date("2026-03-09"),
           hoursPerDay: 4,
-          status: "CONFIRMED",
+          status: AllocationStatus.CONFIRMED,
           projectName: "Chargeable",
           isChargeable: true,
         },
@@ -133,7 +134,7 @@ describe("analyzeUtilization", () => {
           startDate: new Date("2026-03-09"),
           endDate: new Date("2026-03-09"),
           hoursPerDay: 4,
-          status: "CONFIRMED",
+          status: AllocationStatus.CONFIRMED,
           projectName: "Internal",
           isChargeable: false,
         },
@@ -190,7 +191,7 @@ describe("findCapacityWindows", () => {
           startDate: new Date("2026-03-09"),
           endDate: new Date("2026-03-13"),
           hoursPerDay: 4,
-          status: "CONFIRMED",
+          status: AllocationStatus.CONFIRMED,
         },
       ],
       new Date("2026-03-09"),
@@ -209,7 +210,7 @@ describe("findCapacityWindows", () => {
           startDate: new Date("2026-03-09"),
           endDate: new Date("2026-03-13"),
           hoursPerDay: 8,
-          status: "CONFIRMED",
+          status: AllocationStatus.CONFIRMED,
         },
       ],
       new Date("2026-03-09"),
@@ -226,7 +227,7 @@ describe("findCapacityWindows", () => {
           startDate: new Date("2026-03-09"),
           endDate: new Date("2026-03-13"),
           hoursPerDay: 8,
-          status: "CANCELLED",
+          status: AllocationStatus.CANCELLED,
         },
       ],
       new Date("2026-03-09"),
@@ -244,7 +245,7 @@ describe("findCapacityWindows", () => {
           startDate: new Date("2026-03-11"), // Wed only fully booked
           endDate: new Date("2026-03-11"),
           hoursPerDay: 8,
-          status: "CONFIRMED",
+          status: AllocationStatus.CONFIRMED,
         },
       ],
       new Date("2026-03-09"), // Mon
@@ -264,7 +265,7 @@ describe("findCapacityWindows", () => {
           startDate: new Date("2026-03-09"),
           endDate: new Date("2026-03-09"),
           hoursPerDay: 6,
-          status: "CONFIRMED",
+          status: AllocationStatus.CONFIRMED,
         },
       ],
       new Date("2026-03-09"),
diff --git a/scripts/db-doctor.mjs b/scripts/db-doctor.mjs
new file mode 100644
index 0000000..9c4ba8c
--- /dev/null
+++ b/scripts/db-doctor.mjs
@@ -0,0 +1,41 @@
+#!/usr/bin/env node
+
+import { URL } from "node:url";
+import { loadWorkspaceEnv, resolveWorkspaceEnvPath } from "./load-env.mjs";
+
+const envPath = loadWorkspaceEnv();
+const expectedDatabase = process.argv[2] ?? "capakraken";
+const rawUrl = process.env.DATABASE_URL;
+
+if (!rawUrl) {
+  console.error(`DATABASE_URL is not configured. Expected it from ${envPath ?? resolveWorkspaceEnvPath()}.`);
+  process.exit(1);
+}
+
+let parsed;
+try {
+  parsed = new URL(rawUrl);
+} catch (error) {
+  console.error(`DATABASE_URL is invalid: ${error instanceof Error ? error.message : String(error)}`);
+  process.exit(1);
+}
+
+const databaseName = parsed.pathname.replace(/^\/+/, "");
+const target = `${parsed.protocol}//${decodeURIComponent(parsed.username)}@${parsed.hostname}${parsed.port ? `:${parsed.port}` : ""}/${databaseName}`;
+
+if (!databaseName) {
+  console.error(`DATABASE_URL does not contain a database name. Target=${target}`);
+  process.exit(1);
+}
+
+if (databaseName !== expectedDatabase) {
+  console.error(`Unexpected database target '${databaseName}'. Expected '${expectedDatabase}'. Target=${target}`);
+  process.exit(1);
+}
+
+if (databaseName === "planarchy") {
+  console.error(`Refusing to continue with deprecated database '${databaseName}'. Target=${target}`);
+  process.exit(1);
+}
+
+console.log(`DB target OK: ${target}`);
diff --git a/scripts/harden-postgres.sh b/scripts/harden-postgres.sh
index eb9d440..0d61c8c 100755
--- a/scripts/harden-postgres.sh
+++ b/scripts/harden-postgres.sh
@@ -2,17 +2,16 @@
 # Remove SUPERUSER from the application database user
 # Run after initial setup: bash scripts/harden-postgres.sh
 
-CONTAINER="planarchy-postgres-1"  # Note: container name may still use old naming
 DB_USER="capakraken"
 DB_NAME="capakraken"
 
 echo "Hardening PostgreSQL for $DB_USER..."
 
 # Remove SUPERUSER privilege
-docker exec $CONTAINER psql -U postgres -c "ALTER USER $DB_USER NOSUPERUSER;"
+docker compose exec -T postgres psql -U postgres -c "ALTER USER $DB_USER NOSUPERUSER;"
 
 # Grant only needed permissions
-docker exec $CONTAINER psql -U postgres -d $DB_NAME -c "
+docker compose exec -T postgres psql -U postgres -d $DB_NAME -c "
   GRANT CONNECT ON DATABASE $DB_NAME TO $DB_USER;
   GRANT USAGE ON SCHEMA public TO $DB_USER;
   GRANT SELECT, INSERT, UPDATE, DELETE ON ALL TABLES IN SCHEMA public TO $DB_USER;
diff --git a/scripts/load-env.mjs b/scripts/load-env.mjs
new file mode 100644
index 0000000..49cf052
--- /dev/null
+++ b/scripts/load-env.mjs
@@ -0,0 +1,45 @@
+import { existsSync, readFileSync } from "node:fs";
+import { dirname, resolve } from "node:path";
+import { fileURLToPath } from "node:url";
+
+function resolveWorkspaceRoot() {
+  return resolve(dirname(fileURLToPath(import.meta.url)), "..");
+}
+
+export function resolveWorkspaceEnvPath() {
+  return resolve(resolveWorkspaceRoot(), ".env");
+}
+
+export function loadWorkspaceEnv() {
+  const envPath = resolveWorkspaceEnvPath();
+  if (!existsSync(envPath)) {
+    return envPath;
+  }
+
+  const contents = readFileSync(envPath, "utf8");
+  for (const rawLine of contents.split(/\r?\n/u)) {
+    const line = rawLine.trim();
+    if (!line || line.startsWith("#")) {
+      continue;
+    }
+
+    const separatorIndex = line.indexOf("=");
+    if (separatorIndex <= 0) {
+      continue;
+    }
+
+    const key = line.slice(0, separatorIndex).trim();
+    const rawValue = line.slice(separatorIndex + 1).trim();
+    const quoted =
+      (rawValue.startsWith("\"") && rawValue.endsWith("\""))
+      || (rawValue.startsWith("'") && rawValue.endsWith("'"));
+    const value = quoted ? rawValue.slice(1, -1) : rawValue;
+
+    if (process.env[key] == null) {
+      process.env[key] = value;
+    }
+  }
+
+  return envPath;
+}
+
diff --git a/scripts/restart.sh b/scripts/restart.sh
index 533431a..6145129 100755
--- a/scripts/restart.sh
+++ b/scripts/restart.sh
@@ -2,7 +2,7 @@
 set -euo pipefail
 cd "$(dirname "$0")/.."
 
-echo "Restarting Planarchy..."
+echo "Restarting CapaKraken..."
 echo ""
 
 # Stop
diff --git a/scripts/start.sh b/scripts/start.sh
index 1fc50ee..1fa9e96 100755
--- a/scripts/start.sh
+++ b/scripts/start.sh
@@ -2,7 +2,7 @@
 set -euo pipefail
 cd "$(dirname "$0")/.."
 
-echo "Starting Planarchy..."
+echo "Starting CapaKraken..."
 
 # 1. Start Docker services
 echo "  Starting PostgreSQL + Redis..."
@@ -12,40 +12,31 @@ sleep 2
 # 2. Wait for PostgreSQL to be healthy
 echo "  Waiting for PostgreSQL..."
 for i in {1..30}; do
-  if docker exec capakraken-postgres-1 pg_isready -U capakraken -q 2>/dev/null; then
+  if docker compose exec -T postgres pg_isready -U capakraken -d capakraken -q 2>/dev/null; then
     break
   fi
   sleep 1
 done
 
-# 3. Regenerate Prisma client
-echo "  Generating Prisma client..."
-pnpm --filter @capakraken/db exec prisma generate --no-hints 2>/dev/null
+# 3. Start the web app in Docker for a stable lifecycle
+echo "  Starting app container on port 3100..."
+docker compose --profile full up -d app
 
-# 4. Clear stale Next.js cache
-rm -rf apps/web/.next
-
-# 5. Start Next.js dev server
-echo "  Starting Next.js on port 3100..."
-nohup pnpm --filter @capakraken/web dev > /tmp/capakraken-dev.log 2>&1 &
-echo $! > /tmp/capakraken-dev.pid
-
-# 6. Wait for server to be ready
+# 4. Wait for server to be ready
 echo "  Waiting for server..."
 for i in {1..30}; do
   if curl -sf http://localhost:3100/api/health > /dev/null 2>&1; then
     echo ""
-    echo "Planarchy is running!"
+    echo "CapaKraken is running!"
     curl -s http://localhost:3100/api/ready | python3 -m json.tool 2>/dev/null || curl -s http://localhost:3100/api/ready
     echo ""
     echo "  URL: http://localhost:3100"
-    echo "  Logs: tail -f /tmp/capakraken-dev.log"
-    echo "  PID: $(cat /tmp/capakraken-dev.pid)"
+    echo "  Logs: docker logs -f capakraken-app-1"
     exit 0
   fi
   sleep 1
 done
 
 echo "ERROR: Server failed to start within 30 seconds"
-echo "Check logs: tail -50 /tmp/capakraken-dev.log"
+echo "Check logs: docker logs --tail 100 capakraken-app-1"
 exit 1
diff --git a/scripts/stop.sh b/scripts/stop.sh
index e20c808..e3af8ca 100755
--- a/scripts/stop.sh
+++ b/scripts/stop.sh
@@ -2,9 +2,9 @@
 set -euo pipefail
 cd "$(dirname "$0")/.."
 
-echo "Stopping Planarchy..."
+echo "Stopping CapaKraken..."
 
-# 1. Stop Next.js dev server
+# 1. Stop any legacy local dev server
 if [ -f /tmp/capakraken-dev.pid ]; then
   PID=$(cat /tmp/capakraken-dev.pid)
   if kill -0 "$PID" 2>/dev/null; then
@@ -20,8 +20,8 @@ fi
 fuser -k 3100/tcp 2>/dev/null || true
 
 # 2. Stop Docker services (keep data volumes)
-echo "  Stopping PostgreSQL + Redis..."
-docker compose stop postgres redis 2>/dev/null || true
+echo "  Stopping app, PostgreSQL and Redis..."
+docker compose --profile full stop app postgres redis 2>/dev/null || true
 
 echo ""
-echo "Planarchy stopped."
+echo "CapaKraken stopped."
diff --git a/scripts/with-env.mjs b/scripts/with-env.mjs
new file mode 100644
index 0000000..beebf6f
--- /dev/null
+++ b/scripts/with-env.mjs
@@ -0,0 +1,26 @@
+#!/usr/bin/env node
+
+import { spawnSync } from "node:child_process";
+import { loadWorkspaceEnv } from "./load-env.mjs";
+
+loadWorkspaceEnv();
+
+const args = process.argv.slice(2);
+
+if (args.length === 0) {
+  console.error("Usage: node scripts/with-env.mjs <command> [args...]");
+  process.exit(1);
+}
+
+const result = spawnSync(args[0], args.slice(1), {
+  stdio: "inherit",
+  env: process.env,
+});
+
+if (result.error) {
+  console.error(result.error.message);
+  process.exit(1);
+}
+
+process.exit(result.status ?? 1);
+