Fix OKX abandon residual double-book and fill/residual ledger holes.

After dual-close leaves option pending, continue close_group instead of false residual; reject partial fills on wait timeout; LIVE residual settle allow_negative.

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

backend/app/live/binance_executor.py

@@ -115,7 +115,8 @@ class BinanceLiveExecutor(Matcher):
         except Exception as e:
             logger.exception("binance live open option failed")
             msg = str(e)
-            if "orderId=" in msg or "orderId" in msg.lower():
+            # 仅当错误带明确 orderId= 时保留 opening（避免校验文案误卡槽）
+            if "orderId=" in msg:
                 return OpenResult(
                     ok=False,
                     detail=f"币安开期权未确认成交(保留 opening 防重复开，请核对交易所): {e}",