Update websocket_manager.py

websocket_manager.py

@@ -383,10 +383,10 @@ class WebSocketManager:
         """Send state transition to client"""
         await self.send_message(event.session_id, {
             "type": "state_change",
-            "from": event.data.get("from_state"),
-            "to": event.data.get("to_state")
+            "from": event.data.get("old_state"),
+            "to": event.data.get("new_state")
         })
-        
+            
     async def _handle_stt_ready(self, event: Event):
         """Send STT ready signal to client"""
         await self.send_message(event.session_id, {