Replace 期期 equal-split with long/short bias sizing and env ratio controls.

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/hedge_plan/hedge_plan_register.py

@@ -120,6 +120,18 @@ def _oo_close_mode_enabled() -> bool:
     return _env_bool("HEDGE_PLAN_OO_CLOSE_MODE_ENABLED", True)
 
 
+def _oo_bias_split_by() -> str:
+    from lib.hedge_plan.hedge_plan_calc_lib import _normalize_oo_bias_split_by
+
+    return _normalize_oo_bias_split_by(os.getenv("HEDGE_PLAN_OO_BIAS_SPLIT_BY") or "budget")
+
+
+def _oo_bias_ratio() -> float:
+    from lib.hedge_plan.hedge_plan_calc_lib import _clamp_oo_bias_ratio
+
+    return _clamp_oo_bias_ratio(os.getenv("HEDGE_PLAN_OO_BIAS_RATIO") or "0.7")
+
+
 def _normalize_oo_close_mode(raw: Any) -> str:
     """方案C关闭时强制 hold_expiry;开启时默认 close_all."""
     if not _oo_close_mode_enabled():
@@ -192,6 +204,8 @@ def _gates_public(cfg: dict[str, Any], plan_type: str) -> dict[str, Any]:
     g = _gates_dict(cfg, plan_type)
     g["oo_close_mode_enabled"] = _oo_close_mode_enabled()
     g["oo_close_mode_default"] = "close_all" if _oo_close_mode_enabled() else "hold_expiry"
+    g["oo_bias_split_by"] = _oo_bias_split_by()
+    g["oo_bias_ratio"] = _oo_bias_ratio()
     return g