Fix hub AI save: background PM2 restart after JSON response.

Co-authored-by: Cursor <cursoragent@cursor.com>

manual_trading_hub/static/index.html

@@ -1192,6 +1192,6 @@
   <script src="/assets/time_close_ui.js?v=3"></script>
   <script src="/assets/options_expiry_countdown.js?v=1"></script>
   <script src="/assets/backup.js?v=1"></script>
-  <script src="/assets/app.js?v=20260708-hub-tp-profit"></script>
+  <script src="/assets/app.js?v=20260708-hub-ai-save"></script>
 </body>
 </html>