chore: import upstream snapshot with attribution

Server/tests/integration/test_refresh_unity_registration.py

@@ -0,0 +1,14 @@
+from services.registry import get_registered_tools
+
+
+def test_refresh_unity_tool_is_registered():
+    """
+    Red test: we expect an explicit refresh tool to exist so callers can force an import/refresh/compile cycle.
+    """
+    # Import the specific module to ensure it registers its decorator without disturbing global registry state.
+    import services.tools.refresh_unity  # noqa: F401
+
+    names = {t.get("name") for t in get_registered_tools()}
+    assert "refresh_unity" in names
+
+