refactor: 将广播事件改为异步队列并增强索引检查兼容性

app/Events/RiskSoldOutBroadcast.php

@@ -6,7 +6,7 @@ use Illuminate\Broadcasting\Channel;
 use Illuminate\Queue\SerializesModels;
 use Illuminate\Foundation\Events\Dispatchable;
 use Illuminate\Broadcasting\InteractsWithSockets;
-use Illuminate\Contracts\Broadcasting\ShouldBroadcastNow;
+use Illuminate\Contracts\Broadcasting\ShouldBroadcast;
 
 /**
  * 界面文档 §2.1：`risk.sold_out` —— 号码赔付池耗尽推送。
@@ -14,10 +14,19 @@ use Illuminate\Contracts\Broadcasting\ShouldBroadcastNow;
  * 触发时机：某号码的风险池额度被完全占用时。
  * 前端处理：该号码的玩法格子标记为售罄（置灰或禁用）。
  */
-final class RiskSoldOutBroadcast implements ShouldBroadcastNow
+final class RiskSoldOutBroadcast implements ShouldBroadcast
 {
     use Dispatchable, InteractsWithSockets, SerializesModels;
 
+    /** 异步广播队列 */
+    public string $queue = 'broadcasts';
+
+    /** 最多重试 3 次 */
+    public int $tries = 3;
+
+    /** 单任务超时 10 秒 */
+    public int $timeout = 10;
+
     /**
      * @param  int  $drawId  期号 ID
      * @param  string  $drawNo  期号编号（如 20260101-001）