修复币本位期权浮盈二次折算：中控汇总与实例统计把已折 U 的数再乘指数。

约 -6.5U 被当成 ETH 再 ×2700 显示成 -1.7万U；汇总框直接按 U 展示，stats 不再对 open_float 二次换算。

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

lib/options/options_register.py

@@ -1846,32 +1846,24 @@ def register_options_routes(app: Flask, cfg: dict[str, Any]) -> None:
         except Exception:
             index_px = None
         stats = compute_options_stats_from_history(history, index_px=index_px)
+        # sum_options_net_pnl_usdc 已按指数折 U;勿再 × 指数(否则顶栏会变成上万假亏)
         open_float = sum_options_net_pnl_usdc(cfg, ex, raw_live)
-        # 币本位浮盈为币数量,折算为 U 再与已平合计
-        if open_float is not None and str(stats.get("pnl_unit") or "") == "U":
-            px = index_px
-            if px is None or px <= 0:
-                for h in history:
-                    try:
-                        px = float(h.get("idx_px") or 0)
-                    except (TypeError, ValueError):
-                        px = 0
-                    if px > 0:
-                        break
-            if px and px > 0:
-                open_float = round(float(open_float) * float(px), 4)
         net_realized = _safe_float(stats.get("net_realized_pnl")) or 0.0
         total_pnl = None
         if open_float is not None:
             total_pnl = round(net_realized + float(open_float), 4)
         elif stats.get("total_closed"):
             total_pnl = round(net_realized, 4)
+        from lib.options.options_margin_mode_lib import is_coin_margin_mode
+
+        pnl_unit = "U" if is_coin_margin_mode() else str(stats.get("pnl_unit") or "USDC")
         return jsonify(
             {
                 "ok": True,
                 **stats,
                 "open_float_pnl": open_float,
                 "total_pnl": total_pnl,
+                "pnl_unit": pnl_unit,
             }
         )