feat(task): 暴露任务取消控制状态

apps/api/internal/runner/task_cancel_test.go

@@ -76,3 +76,26 @@ func TestTaskCancelUnavailableReportsSubmittedFromRemoteTaskID(t *testing.T) {
 		t.Fatalf("remote task id should report submitted: %+v", result)
 	}
 }
+
+func TestDescribeTaskCancellationReportsQueuedTaskAsCancellable(t *testing.T) {
+	result := DescribeTaskCancellation(store.GatewayTask{ID: "task-queued", Status: "queued"})
+
+	if result.TaskID != "task-queued" {
+		t.Fatalf("unexpected task id: %+v", result)
+	}
+	if result.Cancelled || !result.Cancellable || result.Submitted {
+		t.Fatalf("queued local task should be cancellable and not submitted: %+v", result)
+	}
+}
+
+func TestDescribeTaskCancellationReportsRemoteTaskAsSubmitted(t *testing.T) {
+	result := DescribeTaskCancellation(store.GatewayTask{
+		ID:           "task-remote",
+		Status:       "running",
+		RemoteTaskID: "remote-1",
+	})
+
+	if result.Cancelled || result.Cancellable || !result.Submitted {
+		t.Fatalf("remote task should be submitted and non-cancellable: %+v", result)
+	}
+}