fix(i18n): 回退到稳定的 32% 覆盖率状态 (tsc + Vite 构建通过)

批量转换脚本引入的语法错误已回退，保留稳定的 i18n 转换:
- 翻译词典: 22 namespaces, 3600+ keys
- 已接入: 145+ 文件 (Dashboard/Login/K8s 主页面/Monitor/System/Deploy)
- 语言切换器在 Header 中可用 (🇨🇳/🇺🇸)
- tsc 零错误, Vite 构建成功

frontend/src/components/system/UserDetailDialog.tsx

@@ -11,6 +11,7 @@ import {
   DialogTitle,
 } from '@/components/ui/dialog';
 import { Key, Edit, User as UserIcon } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 
 interface UserDetailDialogProps {
   selectedUser: any | null;
@@ -28,6 +29,7 @@ export function UserDetailDialog({
   openEdit,
   onResetPassword,
 }: UserDetailDialogProps) {
+  const { t } = useTranslation();
   return (
     <Dialog open={!!selectedUser} onOpenChange={() => setSelectedUser(null)}>
       <DialogContent className="dg-card">
@@ -44,27 +46,27 @@ export function UserDetailDialog({
         <div className="space-y-4">
           <div className="grid grid-cols-2 gap-4 p-4 rounded-lg bg-[var(--dg-bg-tertiary)]/50">
             <div>
-              <p className="text-xs dg-text-muted mb-1">用户名</p>
+              <p className="text-xs dg-text-muted mb-1">{t('system.userName')}</p>
               <p className="text-sm text-[var(--dg-text-primary)]">{selectedUser?.username}</p>
             </div>
             <div>
-              <p className="text-xs dg-text-muted mb-1">昵称</p>
+              <p className="text-xs dg-text-muted mb-1">{t('system.userNickname')}</p>
               <p className="text-sm text-[var(--dg-text-primary)]">{selectedUser?.nickname}</p>
             </div>
             <div>
-              <p className="text-xs dg-text-muted mb-1">邮箱</p>
+              <p className="text-xs dg-text-muted mb-1">{t('system.userEmail')}</p>
               <p className="text-sm text-[var(--dg-text-primary)]">{selectedUser?.email}</p>
             </div>
             <div>
-              <p className="text-xs dg-text-muted mb-1">手机号</p>
+              <p className="text-xs dg-text-muted mb-1">{t('system.userPhone')}</p>
               <p className="text-sm text-[var(--dg-text-primary)]">{selectedUser?.phone || '--'}</p>
             </div>
             <div>
-              <p className="text-xs dg-text-muted mb-1">状态</p>
+              <p className="text-xs dg-text-muted mb-1">{t('system.userStatus')}</p>
               <p className="text-sm text-[var(--dg-text-primary)]">{selectedUser && getUserStatusBadge(selectedUser.status)}</p>
             </div>
             <div>
-              <p className="text-xs dg-text-muted mb-1">创建时间</p>
+              <p className="text-xs dg-text-muted mb-1">{t('system.userCreatedAt')}</p>
               <p className="text-sm text-[var(--dg-text-primary)]">
                 {selectedUser && selectedUser.createdAt ? new Date(selectedUser.createdAt).toLocaleDateString() : '--'}
               </p>
@@ -72,7 +74,7 @@ export function UserDetailDialog({
           </div>
 
           <div>
-            <h4 className="text-sm font-medium text-[var(--dg-text-secondary)] mb-2">角色</h4>
+            <h4 className="text-sm font-medium text-[var(--dg-text-secondary)] mb-2">{t('system.userRole')}</h4>
             <div className="flex flex-wrap gap-2">
               {selectedUser?.roles.map((role: string) => (
                 <Badge key={role} variant="outline" className="border-[var(--dg-border)] dg-text-secondary">
@@ -91,7 +93,7 @@ export function UserDetailDialog({
             onClick={() => selectedUser && onResetPassword?.(selectedUser)}
           >
             <Key className="h-4 w-4 mr-2" />
-            重置密码
+            {t('system.resetPassword')}
           </Button>
           <Button
             className="bg-blue-600 hover:bg-blue-700 text-white"
@@ -103,7 +105,7 @@ export function UserDetailDialog({
             }}
           >
             <Edit className="h-4 w-4 mr-2" />
-            编辑
+            {t('common.edit')}
           </Button>
         </DialogFooter>
       </DialogContent>