revert期权历史仍按币展示盈亏，U 口径只用于统计结算。

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

lib/exchange/okx_options_lib.py

@@ -1467,7 +1467,6 @@ def format_option_history_row(
     realized = _safe_float(raw.get("realizedPnl"))
     if realized is None:
         realized = _safe_float(raw.get("pnl"))
-    pnl_usdt = _safe_float(raw.get("_sim_realized_pnl_usdt"))
     pnl_ratio = _safe_float(raw.get("pnlRatio"))
     close_type = str(raw.get("type") or "").strip()
     utime = _safe_float(raw.get("uTime"))
@@ -1478,13 +1477,6 @@ def format_option_history_row(
     premium_ccy = str(raw.get("_sim_premium_ccy") or "").strip().upper() or premium_ccy_for_mode(
         row_mode, uly or "ETH"
     )
-    # 模拟盘已冻结 U 盈亏时,盈亏列按 U 展示(权利金仍为币)
-    pnl_display_ccy = str(raw.get("_sim_pnl_display_ccy") or "").strip().upper()
-    if pnl_usdt is not None:
-        realized = float(pnl_usdt)
-        pnl_display_ccy = "USDT"
-    elif not pnl_display_ccy:
-        pnl_display_ccy = premium_ccy
     if close_type in ("3", "4"):
         status_label = "强平"
     else:
@@ -1513,13 +1505,10 @@ def format_option_history_row(
         "premium_paid": premium_paid,
         "premium_paid_fmt": format_premium_amount(premium_paid, ccy=premium_ccy),
         "premium_ccy": premium_ccy,
-        "pnl_display_ccy": pnl_display_ccy,
         "margin_mode": row_mode,
         "realized_pnl": realized,
-        "realized_pnl_usdt": pnl_usdt if pnl_usdt is not None else (
-            float(realized) if pnl_display_ccy == "USDT" and realized is not None else None
-        ),
-        "realized_pnl_fmt": format_premium_amount(realized, ccy=pnl_display_ccy),
+        "realized_pnl_usdt": _safe_float(raw.get("_sim_realized_pnl_usdt")),
+        "realized_pnl_fmt": format_premium_amount(realized, ccy=premium_ccy),
         "pnl_ratio_pct": round(pnl_ratio * 100, 2) if pnl_ratio is not None else None,
         "status": "closed",
         "status_label": status_label,