fix卖回未完成禁止用指数提前结算，并纠正买卖VWAP回退。

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

tests/test_options_spot_vwap.py

@@ -76,6 +76,7 @@ class SpotVwapBridgeTests(unittest.TestCase):
     def test_pending_sell_blocks_true_pnl(self):
         from lib.options.options_pnl_settle_lib import resolve_true_pnl_usdt_from_trade
         from lib.options.options_spot_bridge_lib import (
+            BRIDGE_HOLDING,
             BRIDGE_PENDING_SELL,
             add_bridge_buy_fill,
             add_bridge_close_sell_fill,
@@ -103,6 +104,39 @@ class SpotVwapBridgeTests(unittest.TestCase):
         )
         self.assertEqual(src, "pending_sell")
         self.assertIsNone(pnl)
+        # holding 未关桥同样不得用指数提前结算
+        update_bridge(conn, bid, status=BRIDGE_HOLDING)
+        pnl2, src2 = resolve_true_pnl_usdt_from_trade(
+            premium_paid=0.01,
+            premium_received=0.02,
+            realized_pnl=0.01,
+            open_index_px=3000.0,
+            close_index_px=3000.0,
+            premium_ccy="ETH",
+            conn=conn,
+            bridge_id=bid,
+        )
+        self.assertEqual(src2, "pending_sell")
+        self.assertIsNone(pnl2)
+        conn.close()
+
+    def test_buy_vwap_ignores_shrunk_coin_bought(self):
+        """开仓后 coin_bought 被改成权利金量时,不得用 budget/缩水量当买价."""
+        from lib.options.options_spot_bridge_lib import (
+            add_bridge_buy_fill,
+            bridge_buy_vwap,
+            ensure_bridge_table,
+            insert_bridge,
+            update_bridge,
+        )
+
+        conn = sqlite3.connect(":memory:")
+        conn.row_factory = sqlite3.Row
+        ensure_bridge_table(conn)
+        bid = insert_bridge(conn, underlying="BTC", status="holding", budget_usdt=2200)
+        add_bridge_buy_fill(conn, bid, usdt_spent=2200.0, coin_bought=1.1)
+        update_bridge(conn, bid, coin_bought=0.01)  # 缩成权利金
+        self.assertAlmostEqual(float(bridge_buy_vwap(conn, bid)), 2000.0, places=4)
         conn.close()