feat(data): 新增财务指标和涨跌停数据接口

- 财务指标: fina_indicator_vip 封装，166 字段，季度同步
- 涨跌停价格: stk_limit 封装，日频数据同步
- 配套单元测试和调度中心集成

src/data/api_wrappers/__init__.py

@@ -12,11 +12,13 @@ Available APIs:
     - api_namechange: Stock name change history (股票曾用名)
     - api_bak_basic: Stock historical list (股票历史列表)
     - api_stock_st: ST stock list (ST股票列表)
+    - api_stk_limit: Stock limit price (每日涨跌停价格)
 
 Example:
     >>> from src.data.api_wrappers import get_daily, get_stock_basic, get_trade_cal, get_bak_basic
     >>> from src.data.api_wrappers import get_pro_bar, sync_pro_bar, get_daily_basic, sync_daily_basic
     >>> from src.data.api_wrappers import get_stock_st, sync_stock_st
+    >>> from src.data.api_wrappers import get_stk_limit, sync_stk_limit
     >>> data = get_daily('000001.SZ', start_date='20240101', end_date='20240131')
     >>> pro_data = get_pro_bar('000001.SZ', start_date='20240101', end_date='20240131')
     >>> daily_basic = get_daily_basic(trade_date='20240101')
@@ -24,6 +26,7 @@ Example:
     >>> calendar = get_trade_cal('20240101', '20240131')
     >>> bak_basic = get_bak_basic(trade_date='20240101')
     >>> stock_st = get_stock_st(trade_date='20240101')
+    >>> stk_limit = get_stk_limit(trade_date='20240101')
 """
 
 from src.data.api_wrappers.api_daily import (
@@ -58,6 +61,12 @@ from src.data.api_wrappers.api_stock_st import (
     sync_stock_st,
     StockSTSync,
 )
+from src.data.api_wrappers.api_stk_limit import (
+    get_stk_limit,
+    sync_stk_limit,
+    preview_stk_limit_sync,
+    StkLimitSync,
+)
 from src.data.api_wrappers.api_trade_cal import (
     get_trade_cal,
     get_trading_days,
@@ -107,6 +116,11 @@ __all__ = [
     "get_stock_st",
     "sync_stock_st",
     "StockSTSync",
+    # Stock limit price
+    "get_stk_limit",
+    "sync_stk_limit",
+    "preview_stk_limit_sync",
+    "StkLimitSync",
 ]
 
 # =============================================================================
@@ -179,6 +193,17 @@ try:
         order=40,
     )
 
+    # 7. Stock Limit Price - 每日涨跌停价格
+    from src.data.api_wrappers.api_stk_limit import StkLimitSync
+
+    sync_registry.register_class(
+        name="stk_limit",
+        sync_class=StkLimitSync,
+        display_name="每日涨跌停价格",
+        description="股票每日涨跌停价格（涨停价、跌停价）",
+        order=50,
+    )
+
 except ImportError:
     # sync_registry 可能不存在（首次导入），忽略
     pass