恢复后台灰度发布控制面

恢复灰度发布导航、权限、前端契约与页面编译链
解除灰度页面对旧创作入口配置的依赖
补充路由、API、页面回归测试及当前架构文档

apps/admin-web/src/api/adminApiClient.ts

@@ -23,6 +23,7 @@ import type {
   AdminEditorShowcaseListQuery,
   AdminEditorShowcaseListResponse,
   AdminEditorShowcaseReviewRequest,
+  AdminFeatureGateConfigResponse,
   AdminLoginResponse,
   AdminMeResponse,
   AdminOverviewResponse,
@@ -41,6 +42,7 @@ import type {
   AdminUpdateAccountResponse,
   AdminUploadedEditorShowcaseCampaignImage,
   AdminUpsertEditorShowcaseCampaignRequest,
+  AdminUpsertFeatureGateConfigRequest,
   AdminUpsertProfileInviteCodeRequest,
   AdminUpsertProfileRechargeProductRequest,
   AdminUpsertProfileRedeemCodeRequest,
@@ -267,6 +269,23 @@ export function listAdminTrackingEventKeys(token: string) {
   );
 }
 
+export function getAdminFeatureGateConfig(token: string) {
+  return request<AdminFeatureGateConfigResponse>('/admin/api/feature-gates', {
+    token,
+  });
+}
+
+export function upsertAdminFeatureGateConfig(
+  token: string,
+  payload: AdminUpsertFeatureGateConfigRequest,
+) {
+  return request<AdminFeatureGateConfigResponse>('/admin/api/feature-gates', {
+    method: 'PUT',
+    token,
+    body: payload,
+  });
+}
+
 export function getAdminEditorGenerationPricing(token: string) {
   return request<EditorGenerationPricingConfigPayload>(
     '/admin/api/editor-generation-pricing',