test(api): 等待异步任务完成后校验结果

真实队列环境中 X-Async 请求会先返回 queued。集成测试改为轮询任务完成并重新读取详情，避免把正确的异步受理状态误判为失败。

apps/api/internal/httpapi/kling_compat_integration_test.go

@@ -138,12 +138,18 @@ WHERE platform_id = $1::uuid
 			}
 			var response struct {
 				Task struct {
+					ID            string `json:"id"`
 					Status        string `json:"status"`
 					ModelType     string `json:"modelType"`
 					ResolvedModel string `json:"resolvedModel"`
 				} `json:"task"`
 			}
 			doJSONWithHeaders(t, server.URL, http.MethodPost, "/api/v1/videos/generations", apiKeyResponse.Secret, request, map[string]string{"X-Async": "true"}, http.StatusAccepted, &response)
+			if response.Task.ID == "" {
+				t.Fatal("async generic video response did not return a task id")
+			}
+			waitForTaskStatus(t, server.URL, apiKeyResponse.Secret, response.Task.ID, []string{"succeeded"}, 10*time.Second)
+			doJSON(t, server.URL, http.MethodGet, "/api/v1/tasks/"+response.Task.ID, apiKeyResponse.Secret, nil, http.StatusOK, &response.Task)
 			resolvedModel, resolved := klingV2ProviderModel(response.Task.ResolvedModel)
 			if response.Task.Status != "succeeded" || response.Task.ModelType != expectedModelType || !resolved || resolvedModel != model {
 				t.Fatalf("generic video request without modelType should use inferred capability: %+v", response.Task)