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_spot_bridge_lib.py

@@ -778,6 +778,13 @@ def sell_residual_after_option_flat(
             }
         recovered = _safe_float(sell.get("usdt_recovered"))
         sold_amt = _safe_float(sell.get("coin_sold"))
+        # 缺 USDT 回报时用成交价×币量补,保证 close_sell VWAP 能落库
+        if (recovered is None or recovered <= 0) and sold_amt is not None and sold_amt > 0:
+            fill_px = _safe_float(sell.get("fill_px"))
+            if fill_px is not None and fill_px > 0:
+                recovered = round(float(sold_amt) * float(fill_px), 8)
+                sell = dict(sell)
+                sell["usdt_recovered"] = recovered
         # 平仓后卖回(可多笔):累加 close_sell_* 供卖回 VWAP;开仓多余卖回不走这里
         add_bridge_close_sell_fill(
             c,
@@ -809,6 +816,7 @@ def sell_residual_after_option_flat(
                 "bridge_id": bid,
                 "bridge_status": BRIDGE_PENDING_SELL,
             }
+        sell_vwap = bridge_sell_vwap(c, bid)
         update_bridge(
             c,
             bid,
@@ -818,13 +826,26 @@ def sell_residual_after_option_flat(
             message="期权已平,币已卖回 USDT",
             close=True,
         )
+        # 卖回 VWAP 写入关联已平仓(覆盖平仓时指数占位价)
+        if sell_vwap is not None and float(sell_vwap) > 0:
+            try:
+                c.execute(
+                    """
+                    UPDATE options_trades
+                    SET close_index_px = ?
+                    WHERE bridge_id = ? AND status = 'closed'
+                    """,
+                    (float(sell_vwap), int(bid)),
+                )
+            except Exception:
+                pass
         return {
             "ok": True,
             "sell": sell,
             "bridge_id": bid,
             "bridge_status": BRIDGE_CLOSED,
             "sell_complete": True,
-            "sell_vwap": bridge_sell_vwap(c, bid),
+            "sell_vwap": sell_vwap,
         }
 
     if get_db is not None: