rename(phase 1): CapaKraken → Nexus across code, UI, docs, CI

- @capakraken/* → @nexus/* across 12 packages (root + 11 workspaces),
  1551 import lines migrated via codemod
- User-visible brand strings renamed (emails, page titles, PWA
  manifest, mobile header, MFA backup-codes header, tooltips, signin
  page, invite page, weekly digest, install prompt)
- TOTP issuer "CapaKraken" → "Nexus" (existing secrets still valid;
  re-enrollment relabels them in users' authenticator apps)
- Function rename: assertCapaKrakenDbTarget → assertNexusDbTarget
- LocalStorage migration shim in apps/web/src/app/layout.tsx copies
  capakraken_* → nexus_* on first load (guarded by nexus_migrated_v1
  sentinel; runs once per browser, then never again)
- Service-worker cache name capakraken-v2 → nexus-v2 with one-time
  caches.delete('capakraken-v2') from the same shim
- Email-domain fixtures @capakraken.{dev,app} → @nexus.{dev,app} in
  seed data, e2e specs, SMTP default fallback
- Dockerfile.dev / Dockerfile.prod / all .github/workflows/*.yml
  pnpm --filter @capakraken/* → @nexus/*
- README, CLAUDE.md, LEARNINGS.md, all docs/*.md, .env.example,
  tooling/deploy/.env.production.example brand sweep

Phase 1 deliberately leaves untouched (handled in Phase 3 cutover):
- PostgreSQL DB name "capakraken" and POSTGRES_USER "capakraken"
- Volume names capakraken_pgdata etc.
- Compose project name "capakraken" / "capakraken-prod"
- db-target-guard default expectedDatabase
- env-var CAPAKRAKEN_EXPECTED_DB_NAME
- Container DNS names in docker-compose.ci.yml

Quality gates green: pnpm typecheck (7/7), pnpm test:unit (7/7),
pnpm lint (0 errors), check:exports/imports/architecture all pass.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

apps/web/e2e/allocations.spec.ts

@@ -40,24 +40,28 @@ async function signIn(page: Page, email: string, password: string) {
 test.describe("Allocations", () => {
   test.beforeEach(async ({ page }) => {
     await freezeBrowserTime(page);
-    await signIn(page, "admin@capakraken.dev", "admin123");
+    await signIn(page, "admin@nexus.dev", "admin123");
     await page.goto("/allocations");
   });
 
   test("seeded assignments stay visibly rendered on first load", async ({ page }) => {
     await page.waitForLoadState("networkidle");
-    await expect(
-      page.locator("h1").filter({ hasText: /Allocations|Planning/i }),
-    ).toBeVisible({ timeout: 10000 });
+    await expect(page.locator("h1").filter({ hasText: /Allocations|Planning/i })).toBeVisible({
+      timeout: 10000,
+    });
 
     await expect(page.getByTestId("allocations-table")).toBeVisible({ timeout: 10000 });
     await expect(page.getByTestId("allocations-empty-state")).toHaveCount(0);
-    await expect(page.getByTestId("allocation-group-header").first()).toBeVisible({ timeout: 10000 });
+    await expect(page.getByTestId("allocation-group-header").first()).toBeVisible({
+      timeout: 10000,
+    });
     await expect(page.getByTestId("allocation-row").first()).toBeVisible({ timeout: 10000 });
     expect(await page.getByTestId("allocation-row").count()).toBeGreaterThan(0);
   });
 
-  test("explicitly restrictive filters show a visible empty state and can be reset", async ({ page }) => {
+  test("explicitly restrictive filters show a visible empty state and can be reset", async ({
+    page,
+  }) => {
     await page.waitForLoadState("networkidle");
 
     const projectFilter = page.getByPlaceholder("Filter by project…");
@@ -83,21 +87,23 @@ test.describe("Allocations", () => {
     await expect(newBtn).toBeVisible({ timeout: 10000 });
     await newBtn.click();
     await expect(page.getByTestId("allocation-modal")).toBeVisible({ timeout: 5000 });
-    await expect(page.getByRole("heading", { name: /New (Assignment|Open Demand)/i })).toBeVisible();
+    await expect(
+      page.getByRole("heading", { name: /New (Assignment|Open Demand)/i }),
+    ).toBeVisible();
     await page.keyboard.press("Escape");
   });
 
   test("filter by status works", async ({ page }) => {
     await page.waitForLoadState("networkidle");
     // Look for status filter chips or dropdown
-    const statusFilter = page.locator("button", { hasText: /Proposed|Confirmed|Active|Status/i }).first();
+    const statusFilter = page
+      .locator("button", { hasText: /Proposed|Confirmed|Active|Status/i })
+      .first();
     if ((await statusFilter.count()) > 0) {
       await statusFilter.click();
       await page.waitForTimeout(300);
       // After clicking a status filter, the page should still show the table
-      await expect(
-        page.locator("table").or(page.locator("text=No allocations")),
-      ).toBeVisible();
+      await expect(page.locator("table").or(page.locator("text=No allocations"))).toBeVisible();
     }
   });
 
@@ -108,17 +114,17 @@ test.describe("Allocations", () => {
       await colToggle.click();
       await page.waitForTimeout(300);
       // A panel or dropdown with column checkboxes should appear
-      await expect(
-        page.locator("input[type='checkbox']").first(),
-      ).toBeVisible({ timeout: 3000 });
+      await expect(page.locator("input[type='checkbox']").first()).toBeVisible({ timeout: 3000 });
       await page.keyboard.press("Escape");
     }
   });
 
-  test("viewer sees a visible access error instead of an empty allocations page", async ({ browser }) => {
+  test("viewer sees a visible access error instead of an empty allocations page", async ({
+    browser,
+  }) => {
     const page = await browser.newPage();
     await freezeBrowserTime(page);
-    await signIn(page, "viewer@capakraken.dev", "viewer123");
+    await signIn(page, "viewer@nexus.dev", "viewer123");
     await page.goto("/allocations");
     await page.waitForLoadState("networkidle");