fix(HEL-164): 拒绝缓存不完整涨停快照

Co-authored-by: multica-agent <github@multica.ai>

tests/test_admin_refresh_status.py

@@ -0,0 +1,24 @@
+from __future__ import annotations
+
+import unittest
+
+from backend.jobs.service import _verified_dashboard_result
+
+
+class AdminRefreshStatusTests(unittest.TestCase):
+    def test_carried_snapshot_is_reported_as_failed_job(self):
+        result = _verified_dashboard_result(
+            {"meta": {"carried_forward": True, "notice": "官方涨跌停数据尚未返回"}}
+        )
+
+        self.assertEqual(result["status"], "failed")
+        self.assertEqual(result["error"], "官方涨跌停数据尚未返回")
+
+    def test_current_snapshot_is_reported_as_successful_job(self):
+        dashboard = {"meta": {"trade_date": "2026-08-28", "carried_forward": False}}
+
+        self.assertIs(_verified_dashboard_result(dashboard), dashboard)
+
+
+if __name__ == "__main__":
+    unittest.main()