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/executor.py

@@ -924,6 +924,11 @@ class OkxLiveExecutor(Matcher):
         if dual.ok:
             return dual
 
+        # close_group 可能已卖掉期权并落 option_closed_perp_pending；勿再记 residual，只续平永续
+        pos_after = self.current_position()
+        if str(pos_after.get("status") or "") == "option_closed_perp_pending":
+            return self.close_group(reason=reason, bypass_liquidity=True)
+
         if require_deep_otm and not self.option_is_deep_otm():
             return CloseResult(
                 ok=False,