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>

tests/unit/test_indicator.py

@@ -8,7 +8,7 @@ import numpy as np
 import pandas as pd
 import pytest
 
-from easy_tdx.indicator import compute_indicators, list_indicators, _REGISTRY
+from easy_tdx.indicator import _REGISTRY, compute_indicators, list_indicators
 
 
 def _make_ohlcv(n: int = 200, seed: int = 42) -> pd.DataFrame:
@@ -18,15 +18,17 @@ def _make_ohlcv(n: int = 200, seed: int = 42) -> pd.DataFrame:
     low = close - np.abs(rng.standard_normal(n))
     open_ = low + (high - low) * rng.random(n)
     vol = (rng.random(n) * 1e6).astype(float)
-    return pd.DataFrame({
-        "datetime": pd.date_range("2024-01-01", periods=n, freq="D"),
-        "open": open_,
-        "high": high,
-        "low": low,
-        "close": close,
-        "vol": vol,
-        "amount": vol * close,
-    })
+    return pd.DataFrame(
+        {
+            "datetime": pd.date_range("2024-01-01", periods=n, freq="D"),
+            "open": open_,
+            "high": high,
+            "low": low,
+            "close": close,
+            "vol": vol,
+            "amount": vol * close,
+        }
+    )
 
 
 class TestRegistry: