fix: Gitea Traefik routing and connection pool optimization

- Remove middleware reference from Gitea Traefik labels (caused routing issues)
- Optimize Gitea connection pool settings (MAX_IDLE_CONNS=30, authentication_timeout=180s)
- Add explicit service reference in Traefik labels
- Fix intermittent 504 timeouts by improving PostgreSQL connection handling

Fixes Gitea unreachability via git.michaelschiemer.de

src/Application/Admin/Development/StyleguideController.php

@@ -21,7 +21,11 @@ use App\Framework\View\Components\FormInput;
 use App\Framework\View\Components\FormRadio;
 use App\Framework\View\Components\FormSelect;
 use App\Framework\View\Components\FormTextarea;
+use App\Framework\Admin\Attributes\AdminPage;
+use App\Framework\Admin\Attributes\AdminSection;
+use App\Framework\Router\AdminRoutes;
 
+#[AdminSection(name: 'Development', icon: 'code', order: 5, description: 'Development tools and utilities')]
 final readonly class StyleguideController
 {
     public function __construct(
@@ -30,7 +34,8 @@ final readonly class StyleguideController
     ) {
     }
 
-    #[Route(path: '/admin/dev/styleguide', method: Method::GET)]
+    #[AdminPage(title: 'Styleguide', icon: 'tools', section: 'Development', order: 40)]
+    #[Route(path: '/admin/dev/styleguide', method: Method::GET, name: AdminRoutes::DEV_STYLEGUIDE)]
     public function showStyleguide(): ViewResult
     {
         $metaData = new MetaData(