feat(data): 财务/日线同步增量 + 新浪「两边一致」校验兜底 + 逐只进度

- financial 默认增量：按 A 股披露节奏判断已最新并跳过；--full 强制全量重拉
- Tushare fina_indicator 增加报告期窗口与 100 条/请求自动分页（修复老报告期静默截断）
- 新浪兜底收紧为校验兜底：两源重叠历史一致才导入缺失键，行标记 source=sina；
  财务可比字段取 eps/销售毛利率（ROE 两端口径不同不作依据），日线只比较最近重叠交易日
- CLI 输出逐只进度与导入内容描述（来源/行数/报告期与公告区间），失败股票留待重跑
- financial_indicator 增 source 列（迁移 d3f6c9a21b04）；新增一致性/分页/服务测试

backend/app/infrastructure/persistence/sqlalchemy/repositories/market_impl.py

@@ -241,6 +241,25 @@ class SqlAlchemyFinancialRepository:
     def upsert_many(self, rows: Sequence[FinancialIndicator]) -> int:
         return _upsert_by_business_key(self._session, FinancialIndicator, rows)
 
+    def list_symbol(self, symbol: str) -> list[FinancialIndicator]:
+        rows = self._session.scalars(
+            select(FinancialIndicatorModel)
+            .where(FinancialIndicatorModel.symbol == symbol)
+            .order_by(FinancialIndicatorModel.announce_date, FinancialIndicatorModel.report_date)
+        ).all()
+        return [FinancialIndicator.model_validate(r, from_attributes=True) for r in rows]
+
+    def has_report_period(self, symbol: str, report_date: date) -> bool:
+        exists = self._session.scalar(
+            select(FinancialIndicatorModel.id)
+            .where(
+                FinancialIndicatorModel.symbol == symbol,
+                FinancialIndicatorModel.report_date == report_date,
+            )
+            .limit(1)
+        )
+        return exists is not None
+
     def list_announced(
         self,
         symbol: str,