Add spot sell retry UI; sell all trading-account coin on sell-back.

Fix coin-margin sell-back to use full available balance instead of bridge record; show retry banner and button on the options positions panel.

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

lib/options/options_spot_bridge_lib.py

@@ -221,20 +221,16 @@ 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.始终卖光交易户可用余额(coin_amount 仅兼容旧调用,不参与定量)."""
     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}"}
+    amt = float(avail)
+    if amt <= 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)
+    sell_sz = max(0.0, amt * 0.999)
     inst_id = spot_quote_inst_id(ccy)
     try:
         # 现货卖出数量精度:截到 8 位
@@ -278,20 +274,9 @@ def rollback_bought_coin_to_usdt(
     reason: str = "",
     coin_amount: float | None = None,
 ) -> dict[str, Any]:
-    """买币后开期权失败:卖回 USDT 并关闭桥.优先卖 bridge 记录的买入量."""
-    amt = coin_amount
-    if amt is None or float(amt) <= 0:
-        ensure_bridge_table(conn)
-        row = conn.execute(
-            "SELECT coin_bought FROM options_spot_bridge WHERE id=?",
-            (int(bridge_id),),
-        ).fetchone()
-        if row:
-            try:
-                amt = float(row[0] if not isinstance(row, dict) else row.get("coin_bought") or 0)
-            except (TypeError, ValueError, KeyError, IndexError):
-                amt = None
-    sell = spot_market_sell_coin_to_usdt(ex, underlying=underlying, coin_amount=amt)
+    """买币后开期权失败:卖回 USDT 并关闭桥.卖光交易户可用标的币."""
+    _ = coin_amount  # 兼容旧签名;定量以交易户可用为准
+    sell = spot_market_sell_coin_to_usdt(ex, underlying=underlying)
     if not sell.get("ok"):
         update_bridge(
             conn,
@@ -328,13 +313,7 @@ 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)
+    sell = spot_market_sell_coin_to_usdt(ex, underlying=underlying)
     if target is None:
         if not sell.get("ok"):
             msg = str(sell.get("msg") or "")