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/SystemLogsTab.tsx

@@ -15,6 +15,7 @@ import {
 import { auditApi } from '@/api';
 import type { OperationLog } from '@/types';
 import type { JsonData } from '@/types/common';
+import { useTranslation } from 'react-i18next';
 
 interface SystemLogsTabProps {
   searchQuery: string;
@@ -39,6 +40,7 @@ function normalizeLog(raw: JsonData): OperationLog {
 }
 
 export function SystemLogsTab({ searchQuery, setSearchQuery }: SystemLogsTabProps) {
+  const { t } = useTranslation();
   const [logs, setLogs] = useState<OperationLog[]>([]);
   const [loading, setLoading] = useState(true);
 
@@ -69,11 +71,11 @@ export function SystemLogsTab({ searchQuery, setSearchQuery }: SystemLogsTabProp
   const getLogResultBadge = (result: OperationLog['result']) => {
     return result === 'success' ? (
       <Badge variant="outline" className="border-emerald-500/30 dg-text-green bg-emerald-500/10">
-        成功
+        {t('system.auditSuccess')}
       </Badge>
     ) : (
       <Badge variant="outline" className="border-red-500/30 dg-text-red bg-red-500/10">
-        失败
+        {t('system.auditFailed')}
       </Badge>
     );
   };
@@ -85,7 +87,7 @@ export function SystemLogsTab({ searchQuery, setSearchQuery }: SystemLogsTabProp
         <div className="relative w-64">
           <Search className="absolute left-3 top-1/2 -translate-y-1/2 h-4 w-4 dg-text-muted" />
           <Input
-            placeholder="搜索操作日志..."
+            placeholder={t('audit.operations.searchPlaceholder')}
             value={searchQuery}
             onChange={(e) => setSearchQuery(e.target.value)}
             className="pl-9 h-9 dg-input"
@@ -97,7 +99,7 @@ export function SystemLogsTab({ searchQuery, setSearchQuery }: SystemLogsTabProp
           onClick={fetchLogs}
         >
           <RefreshCw className="h-4 w-4 mr-2" />
-          刷新
+          {t('common.refresh')}
         </Button>
       </div>
 
@@ -112,19 +114,19 @@ export function SystemLogsTab({ searchQuery, setSearchQuery }: SystemLogsTabProp
             ) : filteredLogs.length === 0 ? (
               <div className="flex flex-col items-center justify-center py-16 dg-text-muted">
                 <Search className="h-8 w-8 mb-3 opacity-40" />
-                <p className="text-sm">暂无操作日志</p>
+                <p className="text-sm">{t('audit.operations.noData')}</p>
               </div>
             ) : (
               <Table>
                 <TableHeader>
                   <TableRow className="border-[var(--dg-border)] hover:bg-transparent">
-                    <TableHead className="dg-text-secondary">时间</TableHead>
-                    <TableHead className="dg-text-secondary">用户</TableHead>
-                    <TableHead className="dg-text-secondary">模块</TableHead>
-                    <TableHead className="dg-text-secondary">操作</TableHead>
-                    <TableHead className="dg-text-secondary">资源</TableHead>
-                    <TableHead className="dg-text-secondary">IP地址</TableHead>
-                    <TableHead className="dg-text-secondary">结果</TableHead>
+                    <TableHead className="dg-text-secondary">{t('system.auditTime')}</TableHead>
+                    <TableHead className="dg-text-secondary">{t('system.roleUsers')}</TableHead>
+                    <TableHead className="dg-text-secondary">{t('system.auditModule')}</TableHead>
+                    <TableHead className="dg-text-secondary">{t('system.auditAction')}</TableHead>
+                    <TableHead className="dg-text-secondary">{t('system.auditResource')}</TableHead>
+                    <TableHead className="dg-text-secondary">{t('server.csv.ip')}</TableHead>
+                    <TableHead className="dg-text-secondary">{t('system.auditResult')}</TableHead>
                   </TableRow>
                 </TableHeader>
                 <TableBody>