feat(HEL-421): 回补历史日历和指数并标记区间不完整

Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: multica-agent <github@multica.ai>

xiaobai-datahub/tests/test_api.py

@@ -107,6 +107,9 @@ class ApiContractTests(unittest.TestCase):
             self.assertIn("data", body)
             self.assertIn("meta", body)
             self.assertIn("tier", body["meta"])
+            if "calendar" in path or "bars" in path or "indexes" in path or "valuation" in path or "moneyflow" in path or "auction" in path:
+                self.assertIn("coverage", body["meta"])
+                self.assertIn("incomplete", body["meta"])
 
     def test_qfq_matches_formula(self) -> None:
         _, none = self._get(f"/v1/bars/daily?date={TRADE_DATE}&code=600000.SH&adjust=none", token=self.token)