diff --git a/web/app/files.html b/web/app/files.html
index a75ef65e..6c9ab002 100644
--- a/web/app/files.html
+++ b/web/app/files.html
@@ -95,6 +95,17 @@
   <script src="/app/api.js"></script>
   <script src="/app/layout.js"></script>
   <script>
+    // Monaco Editor preload (inline to avoid api.js caching issues)
+    if(!window._monacoLoading&&!window._monacoReady){
+      window._monacoLoading=true;
+      const _ms=document.createElement('script');
+      _ms.src='https://cdn.jsdelivr.net/npm/monaco-editor@0.45.0/min/vs/loader.js';
+      _ms.onload=function(){
+        require.config({paths:{vs:'https://cdn.jsdelivr.net/npm/monaco-editor@0.45.0/min/vs'}});
+        require(['vs/editor/editor.main'],function(){window.monaco=monaco;window._monacoReady=true});
+      };
+      document.head.appendChild(_ms);
+    }
     initLayout('files');
     let _currentPath='/';
     let _currentServerId=null;