Updated app.py

Added the final answer tool

app.py

@@ -211,7 +211,7 @@ with open("prompts.yaml", 'r') as stream:
 # Create the AI Agent
 agent = CodeAgent(
     model=model,
-    tools=[fetch_latest_arxiv_papers],  # Properly registered tool
+    tools=[final_answer,fetch_latest_arxiv_papers],  # Add your tools here 
     max_steps=6,
     verbosity_level=1,
     grammar=None,