test semantics

backend/src/services/__tests__/test_llm_provider.py

@@ -73,6 +73,7 @@ def test_decrypt_invalid_data():
 # @INVARIANT: Chained calls beyond Session spec create unconstrained intermediate mocks; only top-level query/add/commit are spec-enforced.
 @pytest.fixture
 def mock_db():
+    # @RISK: query() returns unconstrained MagicMock — chain beyond query() has no spec protection. Consider create_autospec(Session) for full chain safety.
     return MagicMock(spec=Session)