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/Mail/PurchaseConfirmation.php

@@ -21,7 +21,7 @@ class PurchaseConfirmation extends Mailable
     public function envelope(): Envelope
     {
         return new Envelope(
-            subject: __('emails.purchase.subject', ['package' => $this->purchase->package->name]),
+            subject: __('emails.purchase.subject', ['package' => $this->localizedPackageName()]),
         );
     }
 
@@ -33,6 +33,7 @@ class PurchaseConfirmation extends Mailable
                 'purchase' => $this->purchase,
                 'user' => $this->purchase->tenant->user,
                 'package' => $this->purchase->package,
+                'packageName' => $this->localizedPackageName(),
             ],
         );
     }
@@ -41,4 +42,11 @@ class PurchaseConfirmation extends Mailable
     {
         return [];
     }
-}
+
+    private function localizedPackageName(): string
+    {
+        $locale = $this->locale ?? app()->getLocale();
+
+        return optional($this->purchase->package)->getNameForLocale($locale) ?? '';
+    }
+}