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>

samples/Dispov2/plan-org-unit-hierarchy.md

@@ -16,34 +16,34 @@ Level 5: Content Production (department)
 
 Every resource must be mapped to an Org Unit Level 7. Level 7 rolls up to Level 6, which rolls up to Level 5. The names of org units can change over time, so they must be editable.
 
-CapaKraken already has a `Role` model, but roles represent skills/functions (e.g. "3D Artist"), not organizational placement. A person's org unit and their role are different dimensions.
+Nexus already has a `Role` model, but roles represent skills/functions (e.g. "3D Artist"), not organizational placement. A person's org unit and their role are different dimensions.
 
 ## Current Data
 
 ### Level 5 → Level 6
 
-| Level 5 | Level 6 |
-|---|---|
-| Content Production | CGI Content |
-| Content Production | CGI Technology |
+| Level 5            | Level 6                     |
+| ------------------ | --------------------------- |
+| Content Production | CGI Content                 |
+| Content Production | CGI Technology              |
 | Content Production | Creative Content Production |
-| Content Production | VFX |
+| Content Production | VFX                         |
 
 ### Level 6 → Level 7
 
-| Level 6 | Level 7 |
-|---|---|
-| CGI Content | Art Direction |
-| CGI Content | Capability Development |
-| CGI Content | CGI Production |
-| CGI Content | Product Data Management |
-| CGI Content | Program/Delivery Mgmt |
-| CGI Technology | CGI Development |
-| CGI Technology | IT Development |
-| Creative Content Production | *(direct, no sub-teams)* |
-| VFX | 2D & Art Direction |
-| VFX | 3D |
-| VFX | Program/Delivery Mgmt & Other |
+| Level 6                     | Level 7                       |
+| --------------------------- | ----------------------------- |
+| CGI Content                 | Art Direction                 |
+| CGI Content                 | Capability Development        |
+| CGI Content                 | CGI Production                |
+| CGI Content                 | Product Data Management       |
+| CGI Content                 | Program/Delivery Mgmt         |
+| CGI Technology              | CGI Development               |
+| CGI Technology              | IT Development                |
+| Creative Content Production | _(direct, no sub-teams)_      |
+| VFX                         | 2D & Art Direction            |
+| VFX                         | 3D                            |
+| VFX                         | Program/Delivery Mgmt & Other |
 
 ## Schema
 
@@ -91,7 +91,7 @@ interface OrgUnit {
   id: string;
   name: string;
   shortName?: string;
-  level: number;        // 5, 6, or 7
+  level: number; // 5, 6, or 7
   parentId?: string;
   sortOrder: number;
   isActive: boolean;
@@ -106,13 +106,13 @@ interface OrgUnitTree extends OrgUnit {
 
 Location: `packages/api/src/router/org-unit.ts`
 
-| Procedure | Access | Description |
-|---|---|---|
-| `list` | protected | Returns flat list, optionally filtered by level or parentId |
-| `getTree` | protected | Returns nested tree structure for UI rendering |
-| `create` | admin | Create org unit with parent reference |
-| `update` | admin | Rename, re-parent, change sort order |
-| `deactivate` | admin | Soft-delete (sets `isActive = false`) |
+| Procedure    | Access    | Description                                                 |
+| ------------ | --------- | ----------------------------------------------------------- |
+| `list`       | protected | Returns flat list, optionally filtered by level or parentId |
+| `getTree`    | protected | Returns nested tree structure for UI rendering              |
+| `create`     | admin     | Create org unit with parent reference                       |
+| `update`     | admin     | Rename, re-parent, change sort order                        |
+| `deactivate` | admin     | Soft-delete (sets `isActive = false`)                       |
 
 ## UI