Update app.py

app.py

@@ -201,12 +201,13 @@ def inspect_node(state: AgentState) -> AgentState:
         # (3) Always show the interim answer
         interim = state.get("interim_answer", "")
         messages_for_llm.append(SystemMessage(content=f"INTERIM_ANSWER: {interim}"))
-        messages_for_llm.append(HumanMessage(content="Please write a polished final answer, with no explanation at all."))
+        messages_for_llm.append(SystemMessage(content="Please write a polished final answer, with no explanation at all."))
         # (4) Prompt GPT to produce a polished final answer
         prompt = (
             "You have the user’s question, any relevant tool results above,"
             " and a draft answer (INTERIM_ANSWER).\n"
             "Using all of that, write a concise, polished final answer. "
+            "Do not include any explanation or commentary, just the answer."
             "Return exactly:\n"
             "  {\"final_answer\":\"<your final answer>\"}\n"
             "and nothing else.\n"