Add aditional prints

app.py

@@ -91,8 +91,9 @@ class BasicAgent:
             )
             messages = [sys_msg] + messages
     
-        # Let LangGraph handle tool calls via ToolNode
+        print("Calling model with tools invoke...")
         new_msg = self.model_with_tools.invoke(messages)
+        print("Calling model with tools invoke finished")
     
         # new_messages = add_messages(messages, [new_msg])
         return {