fix(test): Final synchronization and stability fixes for RAG stress test

- Improved AppController.ai_status to prevent overwriting 'sending...' with 'models loaded'.
- Enhanced 	est_rag_phase4_stress.py with robust polling and increased timeout.
- Synchronized App and AppController history objects to ensure consistent view.

tests/test_live_gui_integration_v2.py

@@ -54,10 +54,11 @@ def test_user_request_integration_flow(mock_app: App) -> None:
   # 3. Verify ai_client.send was called
   assert mock_send.called, "ai_client.send was not called"
   
-  # 4. Now the 'response' event is in app.controller.event_queue
-  # But NO ONE is consuming it because _process_event_queue is in the mocked start_services thread.
-  # Let's manually run one tick of the event queue processing logic
-  # In _process_event_queue: event_name, payload = self.event_queue.get()
+  # 4. First event should be 'comms' (request logging)
+  event_name, payload = app.controller.event_queue.get()
+  assert event_name == "comms"
+
+  # 5. Next event should be 'response'
   event_name, payload = app.controller.event_queue.get()
   assert event_name == "response"
   
@@ -102,6 +103,9 @@ def test_user_request_error_handling(mock_app: App) -> None:
   app.controller._handle_request_event(event)
   
   # Manually consume from queue
+  event_name, payload = app.controller.event_queue.get()
+  assert event_name == "comms"
+
   event_name, payload = app.controller.event_queue.get()
   assert event_name == "response"
   assert payload["status"] == "error"