feat(ai): durcissement phase F (#79) - rate limit, redaction, OpenAPI/MCP, E2E

tests/conftest.py

@@ -12,6 +12,16 @@ from fastapi.testclient import TestClient
 sys.path.insert(0, str(Path(__file__).resolve().parent.parent))
 
 
+@pytest.fixture(autouse=True)
+def _reset_tool_ratelimit():
+    """Isolate the per-identity tool rate limiter between tests."""
+    from backend.tools import ratelimit
+
+    ratelimit.reset()
+    yield
+    ratelimit.reset()
+
+
 @pytest.fixture(autouse=True)
 def _clean_env():
     """Ensure no vault env vars leak between tests — but preserve test vault config."""