签入版本

tests/contract/test_routes_snapshot.py

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+"""路由契约快照：守护全部 API 路径与 HTTP 方法不变。"""
+import pytest
+
+from tests.contract.helpers import collect_routes, compare_snapshot
+
+pytestmark = pytest.mark.contract
+
+
+def test_routes_snapshot():
+    compare_snapshot("routes.json", collect_routes())