Update agents/qa_agent.py

agents/qa_agent.py

@@ -40,7 +40,7 @@ class QAAgent:
             raise ValueError("ANTHROPIC_API_KEY not found in environment variables")
         
         self.llm = ChatAnthropic(
-            model="claude-3-haiku-20240307",
+            model="claude-3-7-sonnet-20250219",
             anthropic_api_key=api_key,
             temperature=0.1
         )