完善提取处理流程，解决提取并发问题

web/tasks/task.go

@@ -46,7 +46,7 @@ func HandleRemoveChannel(_ context.Context, task *asynq.Task) (err error) {
 	batch := string(task.Payload())
 	slog.Info("[event]删除通道", "batch", batch)
 
-	err = s.Channel.RemoveChannels(batch, nil)
+	err = s.Channel.RemoveChannels(batch)
 	if err != nil {
 		return fmt.Errorf("删除通道失败: %w", err)
 	}