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

resources/js/modules/router/RouteMiddleware.js

@@ -0,0 +1,78 @@
+/**
+ * Route Middleware
+ * 
+ * Provides route-level middleware for cross-cutting concerns.
+ */
+
+import { Logger } from '../../core/logger.js';
+
+/**
+ * RouteMiddleware - Route middleware
+ */
+export class RouteMiddleware {
+    constructor(name, middlewareFn) {
+        this.name = name;
+        this.middlewareFn = middlewareFn;
+    }
+    
+    /**
+     * Create a new RouteMiddleware
+     */
+    static create(name, middlewareFn) {
+        return new RouteMiddleware(name, middlewareFn);
+    }
+    
+    /**
+     * Execute middleware
+     */
+    async execute(to, from, next, context = {}) {
+        try {
+            await this.middlewareFn(to, from, next, context);
+        } catch (error) {
+            Logger.error(`[RouteMiddleware] Middleware "${this.name}" error:`, error);
+            next(false); // Block navigation
+        }
+    }
+}
+
+/**
+ * Built-in middleware
+ */
+export const BuiltInMiddleware = {
+    /**
+     * Analytics middleware
+     */
+    analytics: RouteMiddleware.create('analytics', async (to, from, next) => {
+        // Track page view
+        if (typeof window !== 'undefined' && window.analytics) {
+            window.analytics.track('page_view', {
+                path: to.path,
+                title: to.title
+            });
+        }
+        next();
+    }),
+    
+    /**
+     * Loading middleware
+     */
+    loading: RouteMiddleware.create('loading', async (to, from, next) => {
+        // Show loading indicator
+        document.body.classList.add('route-loading');
+        next();
+        
+        // Hide loading indicator after navigation
+        setTimeout(() => {
+            document.body.classList.remove('route-loading');
+        }, 100);
+    }),
+    
+    /**
+     * Scroll to top middleware
+     */
+    scrollToTop: RouteMiddleware.create('scroll-to-top', async (to, from, next) => {
+        next();
+        window.scrollTo({ top: 0, behavior: 'smooth' });
+    })
+};
+