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)

app/Http/Controllers/MarketingController.php

@@ -60,14 +60,28 @@ class MarketingController extends Controller
             'message' => 'required|string|max:1000',
         ]);
 
-        Mail::raw("Kontakt-Anfrage von {$request->name} ({$request->email}): {$request->message}", function ($message) use ($request) {
-            $message->to('admin@fotospiel.de')
-                    ->subject('Neue Kontakt-Anfrage');
-        });
+        $locale = app()->getLocale();
+        $contactAddress = config('mail.contact_address', config('mail.from.address')) ?: 'admin@fotospiel.de';
 
-        Mail::to($request->email)->queue(new ContactConfirmation($request->name));
+        Mail::raw(
+            __('emails.contact.body', [
+                'name' => $request->name,
+                'email' => $request->email,
+                'message' => $request->message,
+            ], $locale),
+            function ($message) use ($request, $contactAddress, $locale) {
+                $message->to($contactAddress)
+                    ->subject(__('emails.contact.subject', [], $locale));
+            }
+        );
 
-        return redirect()->back()->with('success', 'Nachricht gesendet!');
+        Mail::to($request->email)
+            ->locale($locale)
+            ->queue(new ContactConfirmation($request->name));
+
+        return redirect()
+            ->back()
+            ->with('success', __('marketing.contact.success', [], $locale));
     }
 
     public function contactView()