fix variable name

app.py

@@ -27,7 +27,7 @@ class LiteLLMModelWithRateLimit(LiteLLMModel):
     """API呼び出し前にレート制限をチェックするLiteLLMModelのラッパー"""
     def run(self, **kwargs) -> dict:
         # APIを呼び出す直前に待機処理を挟む
-        limiter.wait_if_needed()
+        rate_limiter.wait_if_needed()
         # 元のrunメソッドを呼び出してAPIアクセスを実行
         return super().run(**kwargs)
 
@@ -50,6 +50,7 @@ class BasicAgent:
             model=model,
         )
         print("BasicAgent initialized.")
+        
     def __call__(self, question: str) -> str:
         print(f"Agent received question (first 50 chars): {question[:50]}...")
         answer = self.agent.run(question)