币本位盈亏双显ETH/U(按指数换算)；平仓卖币改为卖光交易户可用余额

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

lib/options/options_spot_bridge_lib.py

@@ -221,26 +221,32 @@ def spot_market_sell_coin_to_usdt(
     underlying: str,
     coin_amount: float | None = None,
 ) -> dict[str, Any]:
-    """交易账户:市价卖出标的币换 USDT.coin_amount 空则尽量卖光可用."""
+    """交易账户:市价卖出标的币换 USDT.
+
+    默认/推荐:coin_amount 为空 → 卖光交易账户全部可用币(全部卖出).
+    传入 coin_amount 时仍不超过可用余额,且尽量按可用全额卖出(不故意留粉尘).
+    """
     ccy = (underlying or "ETH").upper()
-    amt = coin_amount
-    if amt is None or float(amt) <= 0:
-        avail = fetch_trading_coin_available(ex, ccy)
-        if avail is None or float(avail) <= 0:
-            return {"ok": False, "msg": f"交易账户无可用 {ccy}"}
-        amt = float(avail)
-    if float(amt) <= 0:
+    avail = fetch_trading_coin_available(ex, ccy)
+    if avail is None or float(avail) <= 0:
+        return {"ok": False, "msg": f"交易账户无可用 {ccy}"}
+    avail_f = float(avail)
+    # 全部卖出:以可用余额为准;若传入数量则不超过可用(开仓失败回滚用)
+    if coin_amount is None or float(coin_amount) <= 0:
+        sell_sz = avail_f
+    else:
+        sell_sz = min(float(coin_amount), avail_f)
+    if sell_sz <= 0:
         return {"ok": False, "msg": f"{ccy} 数量须大于 0"}
-    # 留一点粉尘避免精度拒单
-    sell_sz = float(amt)
-    if sell_sz > 1e-8:
-        sell_sz = max(0.0, sell_sz * 0.999)
     inst_id = spot_quote_inst_id(ccy)
     try:
-        # 现货卖出数量精度:截到 8 位
+        # 现货卖出:向下截到 8 位,避免超过可用被拒;不再 *0.999 故意留残
         sz = f"{sell_sz:.8f}".rstrip("0").rstrip(".")
         if not sz or float(sz) <= 0:
             return {"ok": False, "msg": f"{ccy} 可卖数量过小"}
+        # 二次钳制:格式化后仍不得超过可用
+        if float(sz) > avail_f:
+            sz = f"{avail_f:.8f}".rstrip("0").rstrip(".")
         body = {
             "instId": inst_id,
             "tdMode": "cash",
@@ -328,13 +334,8 @@ def sell_residual_after_option_flat(
             if not underlying or str(b.get("underlying") or "").upper() == underlying.upper():
                 target = b
                 break
-    coin_amt = None
-    if target is not None:
-        try:
-            coin_amt = float(target.get("coin_bought") or 0) or None
-        except (TypeError, ValueError):
-            coin_amt = None
-    sell = spot_market_sell_coin_to_usdt(ex, underlying=underlying, coin_amount=coin_amt)
+    # 平仓后全部卖出交易账户可用标的币(含权利金盈亏留下的币),不按 bridge 记账量限卖
+    sell = spot_market_sell_coin_to_usdt(ex, underlying=underlying, coin_amount=None)
     if target is None:
         if not sell.get("ok"):
             msg = str(sell.get("msg") or "")