Supprimer le timeout auto-retour du menu admin

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/index.html

@@ -916,7 +916,7 @@
   </style>
 
   <script src="/js/websocket.js?v=16"></script>
-  <script src="/js/app.js?v=17"></script>
+  <script src="/js/app.js?v=18"></script>
   <script src="/js/camera.js?v=15"></script>
   <script src="/js/effects.js?v=4"></script>
   <script src="/js/gallery.js?v=3"></script>