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/codec/block.py

@@ -21,7 +21,7 @@ def parse_block_dat(data: bytes, filename: str = "") -> list["TdxBlock"]:
         return []
 
     pos = 384
-    (count,) = struct.unpack("<H", data[pos:pos+2])
+    (count,) = struct.unpack("<H", data[pos : pos + 2])
     pos += 2
 
     results: list[TdxBlock] = []
@@ -40,8 +40,8 @@ def parse_block_dat(data: bytes, filename: str = "") -> list["TdxBlock"]:
             break
 
         # 板块元数据 (9 字节名称 + 2 字节股票数 + 2 字节类型)
-        name_b = data[pos:pos+9]
-        stock_count, _type = struct.unpack("<HH", data[pos+9:pos+13])
+        name_b = data[pos : pos + 9]
+        stock_count, _type = struct.unpack("<HH", data[pos + 9 : pos + 13])
         name = name_b.decode("gbk", errors="replace").strip("\x00")
 
         # 股票代码区 (2800 字节，每只股票 7 字节)
@@ -51,17 +51,19 @@ def parse_block_dat(data: bytes, filename: str = "") -> list["TdxBlock"]:
         actual_count = min(stock_count, 400)
         for i in range(actual_count):
             c_start = codes_start + i * 7
-            c_raw = data[c_start:c_start+7]
+            c_raw = data[c_start : c_start + 7]
             code = c_raw.decode("ascii", errors="replace").strip("\x00")
             if code:
                 codes.append(code)
 
-        results.append(TdxBlock(
-            name=name,
-            category=category,
-            count=stock_count,
-            codes=codes,
-        ))
+        results.append(
+            TdxBlock(
+                name=name,
+                category=category,
+                count=stock_count,
+                codes=codes,
+            )
+        )
 
         # 跳过整个 2813 字节的记录块
         pos += 2813

src/easy_tdx/codec/datetime_.py

@@ -7,13 +7,10 @@
 日线及以上（其余 category）：4 字节 YYYYMMDD 整数
 """
 
-
 from .._binary import unpack_from
 
 
-def get_datetime_minute(
-    data: bytes | bytearray, pos: int
-) -> tuple[int, int, int, int, int, int]:
+def get_datetime_minute(data: bytes | bytearray, pos: int) -> tuple[int, int, int, int, int, int]:
     """解析分钟级时间戳（4 字节）。
 
     Returns:
@@ -28,9 +25,7 @@ def get_datetime_minute(
     return year, month, day, hour, minute, pos + 4
 
 
-def get_datetime_day(
-    data: bytes | bytearray, pos: int
-) -> tuple[int, int, int, int]:
+def get_datetime_day(data: bytes | bytearray, pos: int) -> tuple[int, int, int, int]:
     """解析日期（4 字节 YYYYMMDD）。
 
     Returns:

src/easy_tdx/codec/frame.py

@@ -25,9 +25,9 @@ _HEADER_FMT = "<IIIHH"
 
 @dataclass(frozen=True)
 class FrameHeader:
-    magic: int       # 协议魔数，恒为 7654321
-    seq_id: int      # ZipFlag(1B) + 请求 bytes 1-4 回显(3B)
-    method: int      # 请求回显(1B) + 保留(1B) + Method(2B)
+    magic: int  # 协议魔数，恒为 7654321
+    seq_id: int  # ZipFlag(1B) + 请求 bytes 1-4 回显(3B)
+    method: int  # 请求回显(1B) + 保留(1B) + Method(2B)
     zipsize: int
     unzipsize: int
 

src/easy_tdx/codec/industry.py

@@ -1,8 +1,9 @@
 """通达信行业配置文件 (tdxhy.cfg) 解析器。"""
 
+
 def parse_tdxhy_cfg(content: bytes) -> dict[str, tuple[str, str]]:
     """解析 tdxhy.cfg 字节内容。
-    
+
     返回字典: { "code": (tdx_industry, sw_industry), ... }
     """
     results = {}

src/easy_tdx/codec/volume.py

@@ -9,7 +9,6 @@
 警告：此函数专为成交量设计，不可用于价格字段（pytdx Bug #3）。
 """
 
-
 from .._binary import unpack_from
 
 
@@ -53,5 +52,5 @@ def _decode_volume(ivol: int) -> float:
 
 def _pow2(exp: int) -> float:
     if exp >= 0:
-        return float(1 << exp) if exp < 63 else 2.0 ** exp
-    return 1.0 / (1 << (-exp)) if -exp < 63 else 2.0 ** exp
+        return float(1 << exp) if exp < 63 else 2.0**exp
+    return 1.0 / (1 << (-exp)) if -exp < 63 else 2.0**exp