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/staffing.spec.ts

@@ -3,7 +3,7 @@ import { expect, test } from "@playwright/test";
 test.describe("Staffing", () => {
   test.beforeEach(async ({ page }) => {
     await page.goto("/auth/signin");
-    await page.fill('input[type="email"]', "admin@capakraken.dev");
+    await page.fill('input[type="email"]', "admin@nexus.dev");
     await page.fill('input[type="password"]', "admin123");
     await page.click('button[type="submit"]');
     await expect(page).toHaveURL(/\/(dashboard|resources)/);
@@ -12,7 +12,9 @@ test.describe("Staffing", () => {
 
   test("staffing page loads with search form", async ({ page }) => {
     await page.waitForLoadState("networkidle");
-    await expect(page.locator("h1", { hasText: /Staffing Suggestions/i })).toBeVisible({ timeout: 10000 });
+    await expect(page.locator("h1", { hasText: /Staffing Suggestions/i })).toBeVisible({
+      timeout: 10000,
+    });
     // Search form should have skill input, date fields, and a search button
     await expect(page.locator("text=How scoring works")).toBeVisible({ timeout: 10000 });
   });
@@ -20,9 +22,9 @@ test.describe("Staffing", () => {
   test("search form has default skill tags", async ({ page }) => {
     await page.waitForLoadState("networkidle");
     // The StaffingPanel pre-populates with TypeScript and React skill tags
-    await expect(
-      page.locator("text=TypeScript").or(page.locator("text=React")),
-    ).toBeVisible({ timeout: 10000 });
+    await expect(page.locator("text=TypeScript").or(page.locator("text=React"))).toBeVisible({
+      timeout: 10000,
+    });
   });
 
   test("submitting search returns suggestions or empty state", async ({ page }) => {
@@ -34,7 +36,9 @@ test.describe("Staffing", () => {
     await page.waitForTimeout(1000);
     // After search, should show either suggestion cards or a "no suggestions" message
     await expect(
-      page.locator("text=/Score|Availability|No suggestions|No matching/i").first()
+      page
+        .locator("text=/Score|Availability|No suggestions|No matching/i")
+        .first()
         .or(page.locator("[data-suggestion]").first())
         .or(page.locator("table").first()),
     ).toBeVisible({ timeout: 15000 });