fix卖回VWAP必须落库并覆盖指数占位价，禁止预算反推开仓价。

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

lib/options/options_close_exec_lib.py

@@ -495,9 +495,16 @@ def close_option_by_bid1(
 
                 row_budget = _safe_float(row["budget_usdt"])
                 row_open_idx = _safe_float(row["open_index_px"])
-                if (row_open_idx is None or row_open_idx <= 0) and row_budget and paid > 1e-12:
-                    # 无开仓指数时用预算/已付反推
-                    row_open_idx = float(row_budget) / paid
+                # 禁止 budget/premium 反推开仓价(会把缓冲算进均价,开仓价被抬飞)
+                if (row_open_idx is None or row_open_idx <= 0) and row.get("bridge_id") is not None:
+                    try:
+                        from lib.options.options_spot_bridge_lib import bridge_buy_vwap
+
+                        bv = bridge_buy_vwap(conn, int(row["bridge_id"]))
+                        if bv is not None and float(bv) > 0:
+                            row_open_idx = float(bv)
+                    except Exception:
+                        pass
                 settled = settle_closed_pnl(
                     premium_paid=paid,
                     premium_received=recv,