Update app.py

app.py

@@ -127,7 +127,7 @@ def finalize_node(state: AgentState) -> AgentState:
     return {"final_answer": llm_response.content.strip()}
 
 # ─── 4) Wrap tools in a ToolNode ───
-def tools_node(state: AgentState) -> AgentState:
+def tool_node(state: AgentState) -> AgentState:
     """
     Inspect exactly which tool‐key was set in `state` and call that function.
     Returns only the partial state (with the tool's outputs) so that merge_tool_output can combine it.