Update agent.py

agent.py

@@ -164,13 +164,39 @@ class Agent:
     """
     def __init__(self):
         print("Agent class initialized")
+        # Ensure metadata file exists
+        if not os.path.exists("metadata.jsonl"):
+            print("⚠️ Warning: metadata.jsonl not found")
     
     def __call__(self, question: str) -> str:
         """
         Call the agent with a question.
         This is what the template expects.
+        Template calls: agent = Agent(); answer = agent(question)
         """
-        return run_agent(question)
+        try:
+            if not question or not question.strip():
+                return "Error: Empty question provided"
+            
+            # Use run_agent which checks metadata first
+            answer = run_agent(question)
+            
+            # Ensure we return a string
+            if answer is None:
+                return "Error: No answer returned"
+            
+            answer_str = str(answer).strip()
+            if not answer_str:
+                return "Error: Empty answer"
+            
+            print(f"Agent returning answer: {answer_str[:100]}...")
+            return answer_str
+        except Exception as e:
+            error_msg = f"Error in Agent.__call__: {str(e)}"
+            print(error_msg)
+            import traceback
+            traceback.print_exc()
+            return error_msg
 
 if __name__ == "__main__":
     # Example usage