Limit CodeAgent to 5 steps to prevent infinite loops

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app.py

@@ -23,6 +23,7 @@ class BasicAgent:
         self.agent = CodeAgent(
             model=model,
             tools=[DuckDuckGoSearchTool(), WikipediaSearchTool(user_agent="BasicAgent/1.0")],
+            max_steps=5,
         )
     def __call__(self, question: str) -> str:
         # print(f"Agent received question (first 50 chars): {question[:50]}...")