Update agent.py

agent.py

@@ -1,3 +1,16 @@
-langchain-community
+import asyncio
-langchain-core
+from langchain_core.messages import AIMessage, HumanMessage
-openai
+from langgraph.graph import StateGraph
+from langgraph.checkpoint.memory import MemorySaver
+
+# Simple state with messages list
+class AgentState:
+    def __init__(self):
+        self.messages = []
+
+async def main():
+    # Placeholder for stream logic
+    print("Stream AI agent placeholder")
+
+if __name__ == "__main__":
+    asyncio.run(main())