fix模拟盘流水重算卖回VWAP时同秒多笔配对去重，避免USDT重复计入。

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

scripts/repair_options_spot_vwap_from_sim_ledger.py

@@ -104,19 +104,37 @@ def _ledger_buy_sell(
             """,
             (u, f"{u}/USDT%", start_id, end_id),
         ).fetchall()
+        # 同秒多笔卖回时,按「币卖出 id → 下一笔 USDT 入账」配对,避免重复吃到同一笔 USDT
+        used_usdt_ids: set[int] = set()
         for row in sells:
+            sid = int(row["id"])
             usdt_row = conn.execute(
                 """
-                SELECT amount FROM sim_ledger_entries
-                WHERE ccy='USDT' AND account='trading' AND kind='convert'
-                  AND amount > 0 AND ts=? AND note LIKE 'from %'
-                  AND id > ? AND id < ?
-                ORDER BY id LIMIT 1
+                SELECT id, amount FROM sim_ledger_entries
+                WHERE id = ? AND ccy='USDT' AND account='trading' AND kind='convert'
+                  AND amount > 0 AND note LIKE 'from %'
                 """,
-                (row["ts"], start_id, end_id),
+                (sid + 1,),
             ).fetchone()
+            if usdt_row is None or int(usdt_row["id"]) in used_usdt_ids:
+                cands = conn.execute(
+                    """
+                    SELECT id, amount FROM sim_ledger_entries
+                    WHERE ccy='USDT' AND account='trading' AND kind='convert'
+                      AND amount > 0 AND note LIKE 'from %'
+                      AND id > ? AND id < ?
+                    ORDER BY id
+                    """,
+                    (sid, end_id),
+                ).fetchall()
+                usdt_row = next(
+                    (r for r in cands if int(r["id"]) not in used_usdt_ids),
+                    None,
+                )
             if not usdt_row:
                 continue
+            uid = int(usdt_row["id"])
+            used_usdt_ids.add(uid)
             sell_coin += abs(float(row["amount"]))
             sell_usdt += float(usdt_row["amount"])
     return (