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/ApiGateway/ApiGateway.php

@@ -63,7 +63,7 @@ final readonly class ApiGateway
         $operationId = "api_gateway.{$service}.{$requestName}." . uniqid();
         $snapshot = $this->operationTracker->startOperation(
             operationId: $operationId,
-            category: PerformanceCategory::HTTP,
+            category: PerformanceCategory::API,
             contextData: [
                 'service' => $service,
                 'request_name' => $requestName,
@@ -175,7 +175,7 @@ final readonly class ApiGateway
     private function buildClientRequest(ApiRequest $request): ClientRequest
     {
         // Convert timeout Duration to seconds for ClientOptions
-        $timeoutSeconds = $request->getTimeout()->toSeconds();
+        $timeoutSeconds = (int) $request->getTimeout()->toSeconds();
 
         $options = new ClientOptions(
             timeout: $timeoutSeconds,
@@ -276,7 +276,7 @@ final readonly class ApiGateway
     private function recordMetrics(
         string $service,
         string $requestName,
-        \App\Framework\Performance\PerformanceSnapshot $snapshot,
+        \App\Framework\Performance\ValueObjects\PerformanceSnapshot $snapshot,
         bool $success,
         int $retryAttempts,
         bool $circuitBreakerTriggered