Update state_orchestrator.py

state_orchestrator.py

@@ -80,7 +80,7 @@ class StateOrchestrator:
         """Subscribe to relevant events"""
 
         # Conversation events
-        event_bus.subscribe(EventType.CONVERSATION_STARTED, self._handle_conversation_started)
+        self.event_bus.subscribe(EventType.CONVERSATION_STARTED, self._handle_conversation_started)
 
         # Session lifecycle
         self.event_bus.subscribe(EventType.SESSION_STARTED, self._handle_session_started)