Update Apache configuration to include fallback for SPA routes and add start script in package.json for Nuxt server.

apache-config.conf

@@ -25,10 +25,14 @@
         RewriteRule . /index.html [L]
     </Directory>
 
-    # API-Routes für Nuxt Server (falls Server-Side Rendering verwendet wird)
+    # API-Routes für Nuxt Server
     ProxyPreserveHost On
     ProxyPass /api/ http://localhost:3100/api/
     ProxyPassReverse /api/ http://localhost:3100/api/
+    
+    # Fallback für alle anderen Routen (SPA)
+    ProxyPass / http://localhost:3100/
+    ProxyPassReverse / http://localhost:3100/
 
     # Redirect zu HTTPS (optional - kann später aktiviert werden)
     # RewriteEngine On