security: migrate auth tokens to httpOnly cookies (hybrid bearer token approach)

Backend:
- CookieBearerToken middleware reads httpOnly cookie and injects Authorization
  header before Sanctum validates (prepended to API middleware group)
- SetAuthCookie trait provides cookie creation/expiry helpers with per-app
  cookie names (crewli_admin_token, crewli_app_token, crewli_portal_token)
- LoginController sets token via Set-Cookie, removes it from JSON body
- LogoutController expires the auth cookie on logout
- AuthRefreshController (POST /auth/refresh) rotates tokens with new cookie
- InvitationController accept also sets token via cookie, not JSON body
- All cookies: httpOnly, SameSite=Strict, Secure (in production)

Frontend (all three SPAs):
- Removed all localStorage token storage (apps/app, apps/portal)
- Removed all JS-readable cookie token storage (apps/admin)
- Removed Authorization: Bearer header interceptors from axios
- Auth stores now rely on GET /auth/me to validate httpOnly cookie
- Admin app: new Pinia auth store replaces useCookie-based auth pattern
- withCredentials: true ensures browser sends cookies automatically

Fixes security findings A13-1 (localStorage tokens) and A13-2 (admin
cookie flags). Tokens are now invisible to JavaScript.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

api/app/Http/Controllers/Api/V1/AuthRefreshController.php

@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Controllers\Api\V1;
+
+use App\Http\Controllers\Api\V1\Traits\SetAuthCookie;
+use App\Http\Controllers\Controller;
+use App\Http\Resources\Api\V1\MeResource;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Log;
+
+final class AuthRefreshController extends Controller
+{
+    use SetAuthCookie;
+
+    public function __invoke(Request $request): JsonResponse
+    {
+        $user = $request->user();
+
+        // Revoke the current token
+        $request->user()->currentAccessToken()->delete();
+
+        // Create a new token
+        $newToken = $user->createToken('auth-token')->plainTextToken;
+        $cookieName = $this->resolveCookieName($request);
+
+        $user->load(['organisations', 'roles', 'permissions']);
+
+        Log::info('Auth token refreshed', [
+            'user_id' => $user->id,
+            'ip' => $request->ip(),
+        ]);
+
+        return $this->success(new MeResource($user), 'Token refreshed')
+            ->withCookie($this->makeAuthCookie($cookieName, $newToken));
+    }
+}