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/datahub/settings.py

@@ -48,6 +48,14 @@ class Settings:
     def list_limit_max(self) -> int:
         return int(self.quality.get("list_limit_max") or 5000)
 
+    @property
+    def calendar_start(self) -> str:
+        return str(self.quality.get("calendar_start") or "20160101")
+
+    @property
+    def index_history_trading_days(self) -> int:
+        return int(self.quality.get("index_history_trading_days") or 260)
+
 
 def load_settings(
     env: dict[str, str] | None = None,