Update app.py

app.py

@@ -168,7 +168,7 @@ if query:
     st.session_state.history.append(("user", query))
     # Run agent
     user_msg = types.Content(role="user", parts=[types.Part(text=query)])
-    events = runner.run(user_id="user1", session_id=session.id, new_message=user_msg)
+    events = runner.run(user_id=user_id, session_id=session.id, new_message=user_msg)
     # Collect final response text
     reply = ""
     for ev in events: