rebuild(stage-8): deliver market insight workspaces

next/backend/data/providers/eastmoney.py

@@ -102,6 +102,20 @@ class EastmoneyProvider:
     def sector_members(self, representative: str, trade_date: str) -> ProviderResult:
         raise ProviderError("The display provider is not the constituent authority")
 
+    def market_insight(
+        self,
+        kind: str,
+        trade_date: str,
+        previous_trade_date: str = "",
+        identifier: str = "",
+    ) -> dict[str, ProviderResult | None]:
+        raise ProviderError("The display provider cannot supply market insight archives")
+
+    def realtime_snapshots(
+        self, identifiers: tuple[str, ...], start_time: str, end_time: str
+    ) -> ProviderResult:
+        raise ProviderError("The display provider cannot supply calculation snapshots")
+
     @staticmethod
     def _secid(entity_type: str, identifier: str) -> str:
         if entity_type == "index" and identifier in INDEX_CODES: