rename(phase 3): compose/DB/infra names + stray code refs capakraken → nexus

- docker-compose.yml / .prod.yml / .ci.yml: project names, POSTGRES_DB/USER,
  pg_isready, DATABASE_URL, volume names (nexus_pgdata, nexus_prod_*)
- .github/workflows/ci.yml: POSTGRES_PASSWORD, pg_isready, psql credentials,
  GRANT statements, POSTGRES_PASSWORD=nexus_dev for Docker Deploy job
- scripts/db-target-guard.mjs: expectedDatabase default, NEXUS_EXPECTED_DB_NAME
- scripts/prisma-with-env.mjs, e2e/test-server.mjs: env-var rename
- packages/db/src/safe-destructive-env.ts + reset-dispo-import.ts: DB name set
- packages/db/src/destructive-db-guard.ts: PROTECTED_DATABASE_NAMES → "nexus"
- packages/db/src/destructive-db-guard.test.ts: all fixture DB names + comments
- .env.example, tooling/deploy/deploy.env.example: DATABASE_URL, image refs
- packages/api: Redis channel/key prefixes (rbac-invalidate, sse, ratelimit),
  logger service name, app-base-url log prefix
- E2E: DB container names, localStorage/sessionStorage keys, email domains
- scripts: architecture-guardrails filter, export/import-dev-seed defaults,
  harden-postgres defaults, start.sh pg_isready, worktree-hygiene fixture
- tooling/migrate/rename-to-nexus.sh: new maintenance-window cutover script

Only intentional capakraken survivor: anonymization.ts DEFAULT_ANONYMIZATION_SEED
(functional cryptographic constant — changing it would invalidate stored aliases).

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

apps/web/e2e/dev-system/invite-flow.spec.ts

@@ -27,7 +27,7 @@ test.describe("invite flow", () => {
   });
 
   test("admin invites a new user and invited user can sign in", async ({ page, browser }) => {
-    const testEmail = `invite-e2e-${Date.now()}@capakraken.test`;
+    const testEmail = `invite-e2e-${Date.now()}@nexus.test`;
 
     // Step 1: Navigate to admin users page
     await page.goto("/admin/users");
@@ -36,7 +36,7 @@ test.describe("invite flow", () => {
     // Step 2: Open invite modal
     await page.click('button:has-text("Invite User")');
     // Wait for the modal heading — AnimatedModal does not use role="dialog"
-    await page.waitForSelector('text=Invite User', { state: "visible" });
+    await page.waitForSelector("text=Invite User", { state: "visible" });
 
     // Step 3: Fill in invite form
     await page.fill('input[type="email"]', testEmail);
@@ -45,7 +45,9 @@ test.describe("invite flow", () => {
     await page.click('button:has-text("Send Invite")');
 
     // Step 5: Wait for success message (exact text from InviteUserModal.tsx)
-    await expect(page.locator("text=Invitation sent successfully.")).toBeVisible({ timeout: 10_000 });
+    await expect(page.locator("text=Invitation sent successfully.")).toBeVisible({
+      timeout: 10_000,
+    });
 
     // Step 6: Read invite email from Mailhog
     const email = await getLatestEmailTo(testEmail, { timeoutMs: 15_000 });