Align hedge UI/fees: drop 未启动, premium coin/U, equity incl perp margin, OKX option fees.

Option net uses Min(0.03%×coin, 7%×premium) with bid/ask fills (no slip); live PnL colors fixed.

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

lib/sim/pricing_lib.py

@@ -1,8 +1,8 @@
 """成交价与手续费.
 
 永续:滑点=1×fee_rate,手续费=名义×fee_rate.
-期权(币本位):滑点仍按权利金价×fee_rate;手续费对齐 OKX=
-  Min(fee_rate×标的币数量, 权利金×7%).
+期权(币本位):吃卖一/买一按报价成交(无额外滑点);手续费对齐 OKX=
+  Min(fee_rate×标的币数量, 权利金×7%);普通用户 taker 默认 0.03%.
 """
 
 from __future__ import annotations
@@ -32,6 +32,20 @@ def sim_fee_rate(override: float | None = None) -> float:
         return 0.0005
 
 
+def sim_option_fee_rate(override: float | None = None) -> float:
+    """OKX 币本位期权 taker 费率(默认 0.03%)."""
+    if override is not None:
+        return float(override)
+    try:
+        return float(
+            os.getenv("SIM_OPTION_FEE_RATE")
+            or os.getenv("OKX_OPTIONS_TAKER_FEE")
+            or "0.0003"
+        )
+    except (TypeError, ValueError):
+        return 0.0003
+
+
 def perp_fill(
     *,
     side: str,
@@ -74,7 +88,7 @@ def option_fee_coin(
     Min(费率 × 张数对应标的币数量, 权利金×封顶比例).
     注意:费率作用在标的币面值上,不是权利金名义上.
     """
-    f = sim_fee_rate(fee_rate)
+    f = sim_option_fee_rate(fee_rate)
     qty = abs(float(underlying_coin or 0.0))
     prem = abs(float(premium_coin or 0.0))
     if qty <= 0 and prem <= 0:
@@ -92,20 +106,19 @@ def option_fill(
     bid: float,
     ask: float,
     qty: float,
-    fee_rate: float,
+    fee_rate: float | None = None,
 ) -> PriceResult:
     """开仓买入吃卖一; 平仓卖出吃买一.
 
     qty = sheets × ct_mult(标的币数量).
-    滑点仍按权利金价×费率;手续费按 OKX 币本位公式(标的币×费率,权利金7%封顶).
+    成交价=买卖一(无额外滑点);手续费=OKX 币本位公式(标的币×费率,权利金7%封顶).
     """
-    f = float(fee_rate)
+    f = sim_option_fee_rate(fee_rate)
     if action == "open":
         base = float(ask)
-        fill = base * (1.0 + f)
     else:
         base = float(bid)
-        fill = base * (1.0 - f)
+    fill = base
     qty_f = abs(float(qty))
     notional = abs(fill * qty_f)
     fee = option_fee_coin(
@@ -113,8 +126,7 @@ def option_fill(
         premium_coin=notional,
         fee_rate=f,
     )
-    slip = abs(fill - base) * qty_f
-    return PriceResult(base_px=base, fill_px=fill, fee=fee, slip=slip, notional=notional)
+    return PriceResult(base_px=base, fill_px=fill, fee=fee, slip=0.0, notional=notional)
 
 
 @dataclass(slots=True)