fix: resolve all CI mypy (265→0) and ruff (26→0) errors

- pyproject.toml: add mypy overrides for pandas/tabulate/matplotlib stubs,
  disable strict checking for vendored MyTT library
- config.py: use cast() for dict[str, Any] .get() returns
- beichi.py: widen _calc_bi_force param to BI | XD, import XD
- backtest/cli.py: split combo/single strategy into separate typed variables
- backtest/combo.py: add bool_array() helper for numpy return types
- chanlun/analyser.py: type ignore for pandas row access, fix dict type arg
- unified.py: change fields param from object to Any
- ex/mac_client.py: add type args to list literals
- cli/cmd_offline.py: wrap int market as Market enum before API call
- cli/cmd_chanlun.py: fix dict type arg
- offline/write_*.py: explicit int() cast for struct.unpack returns
- MyTT.py: fix line-too-long comments, UP038 isinstance syntax
- tests: fix E712 (==False → ~mask), E741 (noqa), F841, import sorting
- ruff format applied across codebase

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/easy_tdx/models/stats.py

@@ -1,58 +1,61 @@
 """验证市场概况模型。"""
+
 from dataclasses import dataclass
 
 
 @dataclass
 class MarketStat:
     """全市场涨跌统计概况。"""
-    up_count: int           # 上涨家数
-    down_count: int         # 下跌家数
-    neutral_count: int      # 平盘家数
-    suspended_count: int    # 由 total-(up+down+neutral) 得到的残差项，近似表示停牌/未参与统计家数
-    total_count: int        # 总计（包含停牌）
-    total_amount: float     # 总成交额
-    total_volume: float     # 总成交量
-    total_market_cap: float # 总市值（亿元），来自 880001 收盘价，÷100 得万亿
-    limit_up_count: int     # 涨停家数，来自 880006 close
-    limit_down_count: int   # 跌停家数，来自 880006 open
+
+    up_count: int  # 上涨家数
+    down_count: int  # 下跌家数
+    neutral_count: int  # 平盘家数
+    suspended_count: int  # 由 total-(up+down+neutral) 得到的残差项，近似表示停牌/未参与统计家数
+    total_count: int  # 总计（包含停牌）
+    total_amount: float  # 总成交额
+    total_volume: float  # 总成交量
+    total_market_cap: float  # 总市值（亿元），来自 880001 收盘价，÷100 得万亿
+    limit_up_count: int  # 涨停家数，来自 880006 close
+    limit_down_count: int  # 跌停家数，来自 880006 open
 
 
 @dataclass
 class FundFlow:
     """个股资金流向统计（基于 Tick 数据加权计算）。"""
-    
+
     # 流入项 (Buy)
-    super_in: float   # 超大单流入 (>100万)
-    large_in: float   # 大单流入 (>20万 且 <=100万)
+    super_in: float  # 超大单流入 (>100万)
+    large_in: float  # 大单流入 (>20万 且 <=100万)
     medium_in: float  # 中单流入 (>4万 且 <=20万)
-    small_in: float   # 小单流入 (<=4万)
-    
+    small_in: float  # 小单流入 (<=4万)
+
     # 流出项 (Sell)
     super_out: float
     large_out: float
     medium_out: float
     small_out: float
-    
+
     @property
     def main_net_inflow(self) -> float:
         """主力净流入 (超大单 + 大单)。"""
         return (self.super_in + self.large_in) - (self.super_out + self.large_out)
-    
+
     @property
     def total_net_inflow(self) -> float:
         """全单净流入。"""
-        return (self.super_in + self.large_in + self.medium_in + self.small_in) - \
-               (self.super_out + self.large_out + self.medium_out + self.small_out)
+        return (self.super_in + self.large_in + self.medium_in + self.small_in) - (
+            self.super_out + self.large_out + self.medium_out + self.small_out
+        )
 
 
 @dataclass
 class HistoricalFundFlow:
     """历史日线资金流向条目。"""
-    
+
     year: int
     month: int
     day: int
-    
+
     # 金额项 (单位：元)
     super_in: float
     super_out: float
@@ -62,7 +65,7 @@ class HistoricalFundFlow:
     medium_out: float
     small_in: float
     small_out: float
-    
+
     @property
     def main_net_inflow(self) -> float:
         """当日主力净流入。"""