feat(acceptance): 建立同构验收与弹性容量体系

实现本地三节点 K3s 同构环境、脱敏生产快照、Gemini 图片和多参考图视频协议模拟、统一验收报告及故障注入。\n\n新增 Worker 容量控制器、资源与连接预算、任务恢复保护，并将生产验收拆分为 validation 执行和人工 CAS 放量。\n\n验证包括 Go 全量测试、PostgreSQL HTTP 集成测试、go vet、OpenAPI、ShellCheck、前端检查、迁移及发布脚本测试。

apps/api/internal/httpapi/keling_compat_integration_test.go

@@ -131,12 +131,16 @@ func TestKelingOmniCompatibleHTTPFlow(t *testing.T) {
 	serverCtx, cancelServer := context.WithCancel(ctx)
 	defer cancelServer()
 	gateway := httptest.NewServer(NewServerWithContext(serverCtx, config.Config{
-		AppEnv:            "test",
-		HTTPAddr:          ":0",
-		DatabaseURL:       databaseURL,
-		IdentityMode:      "hybrid",
-		JWTSecret:         "test-secret",
-		CORSAllowedOrigin: "*",
+		AppEnv:                            "test",
+		HTTPAddr:                          ":0",
+		DatabaseURL:                       databaseURL,
+		IdentityMode:                      "hybrid",
+		JWTSecret:                         "test-secret",
+		CORSAllowedOrigin:                 "*",
+		AsyncQueueWorkerEnabled:           true,
+		AsyncWorkerHardLimit:              32,
+		AsyncWorkerInstanceHardLimit:      32,
+		AsyncWorkerRefreshIntervalSeconds: 1,
 	}, db, slog.New(slog.NewTextHandler(io.Discard, nil))))
 	defer gateway.Close()
 
@@ -152,7 +156,7 @@ func TestKelingOmniCompatibleHTTPFlow(t *testing.T) {
 		"aspect_ratio":     "16:9",
 		"duration":         "3",
 		"sound":            "off",
-		"image_list":       []any{map[string]any{"image_url": "https://example.com/reference.png"}},
+		"image_list":       []any{map[string]any{"image_url": gateway.URL + "/static/simulation/image.png"}},
 		"external_task_id": "compat-http-1",
 	}, http.StatusOK, &created)
 	createdData, _ := created.Data.(map[string]any)