fix: Add debug logging to patch endpoints

src/app_controller.py

@@ -518,11 +518,21 @@ class AppController:
       self._ask_request_id = None
       self._ask_tool_data = None
     elif action == "custom_callback":
+     sys.stderr.write(f"[DEBUG] Processing custom_callback task\n")
+     sys.stderr.flush()
      cb = task.get("callback")
      args = task.get("args", [])
      if callable(cb):
-      try: cb(*args)
-      except Exception as e: print(f"Error in direct custom callback: {e}")
+      try: 
+       sys.stderr.write(f"[DEBUG] Calling callable callback\n")
+       sys.stderr.flush()
+       cb(*args)
+       sys.stderr.write(f"[DEBUG] Callback completed\n")
+       sys.stderr.flush()
+      except Exception as e: 
+       sys.stderr.write(f"[DEBUG] Error in direct custom callback: {e}\n")
+       sys.stderr.flush()
+       print(f"Error in direct custom callback: {e}")
      elif cb in self._predefined_callbacks:
       self._predefined_callbacks[cb](*args)
     elif action == "mma_step_approval":