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/strategy/engine.py

@@ -241,6 +241,24 @@ class StrategyEngine:
                 close_data = r.data
                 if r.ok:
                     self.enter_rest_after_close()
+            elif st == "opening":
+                # 开仓未确认：不自动清槽（可能期权已成交）；紧急全平仅告警，防重复开
+                ok = False
+                detail = (
+                    "stuck opening：请核对交易所期权/永续后人工处理"
+                    "（已占槽防重复开，紧急全平不会自动释放）"
+                )
+                close_data = {"status": "opening"}
+                try:
+                    from ..notify import wecom
+
+                    wecom.notify_fault(
+                        title="紧急全平遇到 stuck opening",
+                        detail=detail,
+                        dedupe_key="emergency:opening",
+                    )
+                except Exception:
+                    pass
             elif st in ("open", "option_closed_perp_pending"):
                 # A：双腿（或续平永续）
                 r = self.matcher.close_group(reason="emergency", bypass_liquidity=True)