Fix tenant event form package selector so it no longer renders empty-value options, handles loading/empty

states, and pulls data from the authenticated /api/v1/tenant/packages endpoint.
    (resources/js/admin/pages/EventFormPage.tsx, resources/js/admin/api.ts)
  - Harden tenant-admin auth flow: prevent PKCE state loss, scope out StrictMode double-processing, add SPA
    routes for /event-admin/login and /event-admin/logout, and tighten token/session clearing semantics (resources/js/admin/auth/{context,tokens}.tsx, resources/js/admin/pages/{AuthCallbackPage,LogoutPage}.tsx,
    resources/js/admin/router.tsx, routes/web.php)

resources/js/admin/router.tsx

@@ -15,6 +15,7 @@ import TaskCollectionsPage from './pages/TaskCollectionsPage';
 import EmotionsPage from './pages/EmotionsPage';
 import AuthCallbackPage from './pages/AuthCallbackPage';
 import WelcomeTeaserPage from './pages/WelcomeTeaserPage';
+import LogoutPage from './pages/LogoutPage';
 import { useAuth } from './auth/context';
 import {
   ADMIN_BASE_PATH,
@@ -71,6 +72,7 @@ export const router = createBrowserRouter([
     children: [
       { index: true, element: <LandingGate /> },
       { path: 'login', element: <LoginPage /> },
+      { path: 'logout', element: <LogoutPage /> },
       { path: 'auth/callback', element: <AuthCallbackPage /> },
       {
         element: <RequireAuth />,
@@ -92,7 +94,6 @@ export const router = createBrowserRouter([
           { path: 'welcome/packages', element: <WelcomePackagesPage /> },
           { path: 'welcome/summary', element: <WelcomeOrderSummaryPage /> },
           { path: 'welcome/event', element: <WelcomeEventSetupPage /> },
-          { path: '', element: <Navigate to="dashboard" replace /> },
         ],
       },
     ],
@@ -102,4 +103,3 @@ export const router = createBrowserRouter([
     element: <Navigate to={ADMIN_PUBLIC_LANDING_PATH} replace />,
   },
 ]);
-