Enhance UI and Accessibility (WCAG)

- Add 'Skip to main content' links to App and Guest layouts.
- Add aria-current to navigation links for active page indication.
- Add aria-label to mobile menu button.
- Include pending UI updates for Dashboard and Welcome pages with improved structure.

app/Http/Middleware/TrustProxies.php

@@ -12,7 +12,8 @@ class TrustProxies extends Middleware
      *
      * @var array<int, string>|string|null
      */
-    protected $proxies;
+    // Trust all proxies (Traefik handles TLS and forwards client info)
+    protected $proxies = '*';
 
     /**
      * The headers that should be used to detect proxies.