コントロール状態取得

GET http://localhost:8080/api/v1/tasks/{id}/control-state

X-API-Key: sk_test_123456

{
  "is_paused": true,
  "is_cancelled": false,
  "paused_at": "2025-10-29T06:00:01Z",
  "pause_reason": "User requested pause",
  "paused_by": "user-123",
  "cancel_reason": "",
  "cancelled_by": ""
}

{ "error": "Task not found" }

{ "error": "Unauthorized" }

{ "error": "Forbidden" }