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

scripts/debug/test-hot-reload.js

@@ -0,0 +1,81 @@
+// Hot Reload Test JavaScript
+document.addEventListener('DOMContentLoaded', function() {
+    const statusDiv = document.getElementById('status');
+    const logDiv = document.getElementById('log');
+    
+    function log(message, className = '') {
+        const time = new Date().toLocaleTimeString();
+        const p = document.createElement('p');
+        p.innerHTML = `[${time}] ${message}`;
+        if (className) {
+            p.className = className;
+        }
+        logDiv.appendChild(p);
+        logDiv.scrollTop = logDiv.scrollHeight;
+        console.log(message);
+    }
+    
+    log('Testing Hot Reload connection...');
+    
+    const eventSource = new EventSource('/dev-hot-reload-minimal.php');
+    
+    eventSource.addEventListener('open', function() {
+        statusDiv.textContent = 'Connected to Hot Reload server!';
+        statusDiv.className = 'connected';
+        statusDiv.style.color = 'green';
+        log('✅ Hot Reload connected', 'connected');
+    });
+    
+    eventSource.addEventListener('message', function(event) {
+        log('📨 Message: ' + event.data);
+    });
+    
+    eventSource.addEventListener('connected', function(event) {
+        const data = JSON.parse(event.data);
+        log('🔗 Connected: ' + data.message, 'connected');
+    });
+    
+    eventSource.addEventListener('reload', function(event) {
+        const data = JSON.parse(event.data);
+        log('🔄 Reload event: ' + data.message + ' (' + data.type + ')', 'warning');
+        
+        // Handle different reload types
+        if (data.type === 'css') {
+            log('♻️  Hot-reloading CSS...', 'connected');
+            // Reload CSS files
+            document.querySelectorAll('link[rel="stylesheet"]').forEach(link => {
+                const href = link.href;
+                link.href = href + (href.includes('?') ? '&' : '?') + 't=' + Date.now();
+            });
+        } else if (data.type === 'full') {
+            log('🔄 Full page reload in 2 seconds...', 'warning');
+            setTimeout(() => {
+                window.location.reload();
+            }, 2000);
+        } else if (data.type === 'hmr') {
+            log('⚡ HMR update detected', 'connected');
+            // HMR would be handled by build tools like Vite
+        }
+    });
+    
+    eventSource.addEventListener('heartbeat', function(event) {
+        log('💓 Heartbeat received');
+    });
+    
+    eventSource.addEventListener('error', function(error) {
+        statusDiv.textContent = 'Connection error';
+        statusDiv.className = 'error';
+        statusDiv.style.color = 'red';
+        log('❌ Connection error - retrying...', 'error');
+    });
+    
+    // Test file change simulation after 3 seconds
+    setTimeout(() => {
+        log('🧪 Hot Reload system is ready! Try editing a PHP file in src/ to see live reloading.', 'connected');
+    }, 3000);
+    
+    // Clean up on page unload
+    window.addEventListener('beforeunload', function() {
+        eventSource.close();
+    });
+});