Added unique thread for langchain agent, messages were persisted between

langchain_agent.py

@@ -1,5 +1,6 @@
 import os
 import re
+import uuid
 from dotenv import load_dotenv
 from langchain.agents import create_agent
 from langgraph.checkpoint.memory import InMemorySaver
@@ -37,9 +38,11 @@ If you are asked for a comma separated list, apply the above rules depending of
 
     def __call__(self, question: str) -> str:
         print(f"Agent received question (first 50 chars): {question[:50]}...")
+        # Generate a unique thread ID for each request
+        thread_id = str(uuid.uuid4())
         response = self.agent.invoke(
             {"messages": [HumanMessage(content=question)]},
-            {"configurable": {"thread_id": "1"}, "recursion_limit": 50},
+            {"configurable": {"thread_id": thread_id}, "recursion_limit": 50},
         )
         answer = response["messages"][-1].text
         final_answer = self.extract_final_answer(answer)