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/sim/broker_lib.py

@@ -1291,9 +1291,9 @@ class SimBroker:
                     "closeAvgPx": str(close_px) if close_px is not None else "",
                     "closeTotalPos": str(sheets),
                     "openMaxPos": str(sheets),
-                    # 展示用 U 盈亏;币数量仍放 raw 供对账
-                    "realizedPnl": str(round(pnl_usdt, 4)) if pnl_usdt is not None else str(round(pnl, 8)),
-                    "pnl": str(round(pnl_usdt, 4)) if pnl_usdt is not None else str(round(pnl, 8)),
+                    # 期权历史展示币数量盈亏;U 口径只写 _sim_realized_pnl_usdt 供统计
+                    "realizedPnl": str(round(pnl, 8)),
+                    "pnl": str(round(pnl, 8)),
                     "pnlRatio": str(round(pnl_ratio, 8)) if pnl_ratio is not None else "",
                     "cTime": str(open_ms or ""),
                     "uTime": str(close_ms or ""),
@@ -1302,9 +1302,7 @@ class SimBroker:
                     "stk": str(strike) if strike is not None else "",
                     "_sim_premium_paid": paid,
                     "_sim_premium_ccy": ccy,
-                    "_sim_realized_pnl_coin": pnl,
                     "_sim_realized_pnl_usdt": pnl_usdt,
-                    "_sim_pnl_display_ccy": "USDT" if pnl_usdt is not None else ccy,
                 }
             )
         return out