updated agent again

agent.py

@@ -191,6 +191,7 @@ def build_graph(provider: str = "groq"):
         """Retriever node"""
         print(f"[Retriever] Input: {state['messages'][0].content}")
         similar_question = vector_store.similarity_search(state["messages"][0].content)
+        print(f"[Retriever] similar_question: {similar_question}")
         example_msg = HumanMessage(
             content=f"Here I provide a similar question and answer for reference: \n\n{similar_question[0].page_content}",
         )