Fix unit test

tests/fixtures.py

@@ -9,7 +9,7 @@
 def openai_llm_mock(request):
  content = request.param
  # Note the path here is adjusted to where OpenAI is used, not where it's defined
- with patch("vision_agent.llm.llm.OpenAI") as mock:
+ with patch("vision_agent.llm.llm.wrap_openai") as mock:
  # Setup a mock response structure that matches what your code expects
  mock_instance = mock.return_value
  mock_instance.chat.completions.create.return_value = MagicMock(