修复(会员档位): 未知档位 code 回退展示原始值

- 列表与「最近保存」改用 formatMembershipPlan，未知 plan 不再渲染成空白

apps/admin-web/src/pages/AdminMembershipPlanPage.tsx

@@ -22,7 +22,10 @@ import type {
   ProfileMembershipPlanAdminResponse,
 } from '../api/adminApiTypes';
 import { useAdminWriteConfirm } from '../components/useAdminWriteConfirm';
-import { membershipPlanLabels } from '../config/membershipDisplay';
+import {
+  formatMembershipPlan,
+  membershipPlanLabels,
+} from '../config/membershipDisplay';
 import { handlePageError, parsePositiveIntegerOrZero } from './pageUtils';
 
 interface AdminMembershipPlanPageProps {
@@ -394,7 +397,7 @@ export function AdminMembershipPlanPage({
                     type="button"
                     onClick={() => fillForm(entry)}
                   >
-                    {entry.title || membershipPlanLabels[entry.plan]}
+                    {entry.title || formatMembershipPlan(entry.plan)}
                   </AdminButton>
                   <small>
                     {entry.plan} · rank {entry.rank}
@@ -420,7 +423,7 @@ export function AdminMembershipPlanPage({
                     label: <>档位</>,
                     value: (
                       <>
-                        {membershipPlanLabels[result.plan]}（{result.plan}）
+                        {formatMembershipPlan(result.plan)}（{result.plan}）
                       </>
                     ),
                   },