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/Framework/ExceptionHandling/ErrorHandler.php

@@ -6,12 +6,11 @@ namespace App\Framework\ExceptionHandling;
 use App\Framework\ExceptionHandling\Strategy\StrictErrorPolicy;
 use ErrorException;
 
-final readonly class ErrorHandler
+final readonly class ErrorHandler implements ErrorHandlerInterface
 {
     public function __construct(
         private ErrorHandlerStrategy $strategy = new StrictErrorPolicy,
-    )
-    {}
+    ) {}
 
 
     /**