fix(admin/player/api): 同步单关串关持久化、仅串关可选与盘口状态展示

1. 后台/API：赛事详情返回 allowSingle/allowParlay，管理端 mapMarkets 正确回读
2. 玩家端：仅关单关时仍可点选加入串关；投注抽屉禁用单关提交并提示
3. 玩家端：盘口暂停/已关闭状态标签；MarketTypeTile 展示 statusLabel

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

apps/player/src/stores/betSlip.ts

@@ -18,6 +18,7 @@ export interface SlipItem {
   odds: number;
   marketType: string;
   lineValue?: number | null;
+  allowSingle?: boolean;
   allowParlay?: boolean;
 }