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)

routes/web.php

@@ -42,9 +42,16 @@ Route::get('/blog/{slug}', [MarketingController::class, 'blogShow'])->name('blog
 Route::get('/packages', [MarketingController::class, 'packagesIndex'])->name('packages');
 Route::get('/anlaesse/{type}', [MarketingController::class, 'occasionsType'])->name('anlaesse.type');
 Route::get('/success/{packageId?}', [MarketingController::class, 'success'])->name('marketing.success');
+Route::view('/event-admin/auth/callback', 'admin')->name('tenant.admin.auth.callback');
+Route::view('/event-admin/login', 'admin')->name('tenant.admin.login');
+Route::view('/event-admin/logout', 'admin')->name('tenant.admin.logout');
 Route::view('/event-admin/{view?}', 'admin')->where('view', '.*')->name('tenant.admin.app');
 Route::view('/event', 'guest')->name('guest.pwa.landing');
 Route::view('/g/{token}', 'guest')->where('token', '.*')->name('guest.gallery');
+Route::view('/e/{token}/{path?}', 'guest')
+    ->where('token', '.*')
+    ->where('path', '.*')
+    ->name('guest.event');
 Route::middleware('auth')->group(function () {
     Route::get('/buy/{packageId}', [MarketingController::class, 'buyPackages'])->name('marketing.buy');
 });