updated

app.py

@@ -160,6 +160,9 @@ def create_tools(cfg):
     )
 
 def initialize_agent(_cfg):
+    if 'agent' in st.session_state:
+        return st.session_state.agent
+    
     bot_instructions = """
     - You are a helpful assistant, with expertise in answering user questions about Hacker News stories and comments.
     - Never discuss politics, and always respond politely.
@@ -171,6 +174,8 @@ def initialize_agent(_cfg):
             output = f"{status_type.value} - {msg}"
             st.session_state.log_messages.append(output)
 
+    print(f"init_agent, with cfg={_cfg}")
+
     agent = Agent(
         tools=create_tools(_cfg),
         topic="hacker news",