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

tests/Unit/Framework/ExceptionHandling/ExceptionContextIntegrationTest.php

@@ -174,6 +174,36 @@ describe('Exception Context Integration', function () {
         expect($context2->data['query'])->toBe('SELECT * FROM users');
     });
 
+    it('serializes Value Objects to strings in toArray()', function () {
+        $context = ExceptionContextData::forOperation('test.operation')
+            ->withClientIp(\App\Framework\Http\IpAddress::from('192.168.1.1'))
+            ->withUserAgent(\App\Framework\UserAgent\UserAgent::fromString('Mozilla/5.0'))
+            ->withSessionId(\App\Framework\Http\Session\SessionId::fromString('session-12345678901234567890123456789012'))
+            ->withRequestId('req-123');
+
+        $array = $context->toArray();
+
+        expect($array['client_ip'])->toBe('192.168.1.1');
+        expect($array['user_agent'])->toBe('Mozilla/5.0');
+        expect($array['session_id'])->toBe('session-12345678901234567890123456789012');
+        expect($array['request_id'])->toBe('req-123');
+    });
+
+    it('serializes strings to strings in toArray() (backward compatibility)', function () {
+        $context = ExceptionContextData::forOperation('test.operation')
+            ->withClientIp('192.168.1.1')
+            ->withUserAgent('Mozilla/5.0')
+            ->withSessionId('session-123')
+            ->withRequestId('req-123');
+
+        $array = $context->toArray();
+
+        expect($array['client_ip'])->toBe('192.168.1.1');
+        expect($array['user_agent'])->toBe('Mozilla/5.0');
+        expect($array['session_id'])->toBe('session-123');
+        expect($array['request_id'])->toBe('req-123');
+    });
+
     it('handles nested error scopes correctly', function () {
         // Outer scope
         $outerScope = ErrorScopeContext::http(