Neue Branding-Page und Gäste-PWA reagiert nun auf Branding-Einstellungen vom event-admin. Implemented local Google Fonts pipeline and admin UI selects for branding and invites.

- Added fonts:sync-google command (uses GOOGLE_FONTS_API_KEY, generates /public/fonts/google files, manifest, CSS, cache flush) and
    exposed manifest via new GET /api/v1/tenant/fonts endpoint with fallbacks for existing local fonts.
  - Imported generated fonts CSS, added API client + font loader hook, and wired branding page font fields to searchable selects (with
    custom override) that auto-load selected fonts.
  - Invites layout editor now offers font selection per element with runtime font loading for previews/export alignment.
  - New tests cover font sync command and font manifest API.

  Tests run: php artisan test --filter=Fonts --testsuite=Feature.
  Note: repository already has other modified files (e.g., EventPublicController, SettingsStoreRequest, guest components, etc.); left
  untouched. Run php artisan fonts:sync-google after setting the API key to populate /public/fonts/google.

resources/css/app.css

@@ -2,6 +2,8 @@
 
 @plugin 'tailwindcss-animate';
 
+@import '/fonts/google/fonts.css';
+
 @source '../views';
 @source '../../vendor/laravel/framework/src/Illuminate/Pagination/resources/views/*.blade.php';
 
@@ -115,7 +117,12 @@
   --guest-primary: #f43f5e;
   --guest-secondary: #fb7185;
   --guest-background: #ffffff;
+  --guest-surface: #ffffff;
+  --guest-radius: 12px;
+  --guest-button-style: filled;
+  --guest-link: #fb7185;
   --guest-font-family: 'Montserrat', 'Inter', 'Helvetica Neue', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
+  --guest-body-font: 'Montserrat', 'Inter', 'Helvetica Neue', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
   --guest-heading-font: 'Playfair Display', serif;
   --guest-serif-font: 'Lora', serif;
 }