Update agent.py

agent.py

@@ -126,8 +126,8 @@ class Agent:
         self._history = []
 
     def chat(self, user_input: str) -> str:
-    """Process user input and return the assistant's response."""
-    return self.execute(user_input)
+        """Process user input and return the assistant's response."""
+        return self.execute(user_input)
 
     def available_strategies(self) -> List[str]:
         """Return a list of available strategy names."""