Update index.html

Fix secure connection

index.html

@@ -327,7 +327,8 @@
 
   function connectWebSocket() {
     try {
-      socket = new WebSocket(`ws://${window.location.host}/ws`);
+      const wsUrl = `${window.location.protocol === 'https:' ? 'wss:' : 'ws:'}//${window.location.host}/ws`;
+      socket = new WebSocket(wsUrl);
 
       socket.onopen = () => {
         logMessage('websocket', 'Connected to server');