fixes

src/app_controller.py

@@ -1293,6 +1293,7 @@ class AppController:
 
  def _handle_request_event(self, event: events.UserRequestEvent) -> None:
   """Processes a UserRequestEvent by calling the AI client."""
+  self._set_status('sending...')
   ai_client.set_current_tier(None) # Ensure main discussion is untagged
   # Clear response area for new turn
   self.ai_response = ""