fix(queue): 重新调度终态 River 任务

等待异步准入的任务只跳过仍处于活跃状态的 River Job；missing 或 terminal Job 交由准入调度器重新创建，避免非空 river_job_id 永久阻断旧任务。\n\n通用 River 恢复排除等待准入任务，消除双恢复循环与误导日志；事务回滚继续使用独立有界上下文。\n\n验证：真实 PostgreSQL 下异步 Worker 准入验收和跨 Store 队列集成测试均通过。

apps/api/internal/store/tasks_runtime.go

@@ -947,6 +947,12 @@ WHERE task.async_mode = true
     OR job.id IS NULL
     OR job.state NOT IN ('available', 'pending', 'retryable', 'running', 'scheduled')
   )
+  AND NOT EXISTS (
+    SELECT 1
+    FROM gateway_task_admissions admission
+    WHERE admission.task_id = task.id
+      AND admission.status = 'waiting'
+  )
 ORDER BY task.priority ASC, task.created_at ASC
 LIMIT $1`, limit)
 	if err != nil {