carry(): add missing vol_window param

crypto_eval/grid.py

@@ -80,7 +80,8 @@ def donchian(bars: pd.DataFrame, funding: pd.Series, window: int,
 
 
 def carry(bars: pd.DataFrame, funding: pd.Series, threshold_mult: float = 1.0,
-          base: float = 1e-4, vol_target: float | None = None) -> pd.Series:
+          base: float = 1e-4, vol_target: float | None = None,
+          vol_window: int = 720) -> pd.Series:
     """Short the perp when trailing funding > threshold*base, long when < -."""
     if isinstance(funding, pd.DataFrame):
         funding = funding["funding_rate"]