tests/gateway/test_vision_memory_leak.py::TestEnrichMessageWithVision::test_clean_description_passes_through
tests/gateway/test_vision_memory_leak.py::TestEnrichMessageWithVision::test_memory_context_fence_stripped
tests/gateway/test_vision_memory_leak.py::TestEnrichMessageWithVision::test_fenced_leak_stripped_plugin_header_preserved