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/SystemSettingsTab.tsx

@@ -15,19 +15,18 @@ import { Lock, History, Key, Settings, Network, RefreshCw, Loader2 } from 'lucid
 import { PageTabs } from '@/components/layout/PageTabs';
 import { LdapManagementSection } from './LdapManagementSection';
 import type { JsonData } from '@/types/common';
+import { useTranslation } from 'react-i18next';
+import i18n from '@/i18n';
 
 // 系统设置子 Tab：通用 / 安全 / LDAP // Logan.Li
 const SETTINGS_TABS = [
-  { id: 'general', label: '通用' },
-  { id: 'security', label: '安全' },
+  { id: 'general', label: i18n.t('system.settingsGeneral') },
+  { id: 'security', label: i18n.t('system.settingsSecurity') },
   { id: 'ldap', label: 'LDAP' },
 ] as const;
 type SettingsSubTab = (typeof SETTINGS_TABS)[number]['id'];
 
-export type LdapServerType = 'openldap' | 'ad';
-
 export interface LdapFormData {
-  server_type: LdapServerType;
   ldap_host: string;
   ldap_port: number;
   use_ldaps: boolean;
@@ -35,11 +34,6 @@ export interface LdapFormData {
   admin_password: string;
   base_dn: string;
   search_filter: string;
-  user_mapping: {
-    username: string;
-    email: string;
-    display_name: string;
-  };
 }
 
 interface SystemSettingsTabProps {
@@ -107,6 +101,7 @@ interface SystemSettingsTabProps {
 }
 
 export function SystemSettingsTab(props: SystemSettingsTabProps) {
+  const { t } = useTranslation();
   const {
     auditRetentionDays,
     setAuditRetentionDays,
@@ -158,15 +153,15 @@ export function SystemSettingsTab(props: SystemSettingsTabProps) {
           <CardHeader>
             <CardTitle className="text-[var(--dg-text-primary)] flex items-center gap-2">
               <History className="h-5 w-5 dg-text-green" />
-              审计设置
+              {t('system.audit')}
             </CardTitle>
-            <CardDescription className="dg-text-muted">操作日志与审计策略</CardDescription>
+            <CardDescription className="dg-text-muted">{t('system.auditSettingsDesc')}</CardDescription>
           </CardHeader>
           <CardContent className="space-y-4">
             <div className="flex items-center justify-between">
               <div>
-                <p className="text-sm font-medium text-[var(--dg-text-primary)]">记录所有操作</p>
-                <p className="text-xs dg-text-muted">记录用户的所有操作行为</p>
+                <p className="text-sm font-medium text-[var(--dg-text-primary)]">{t('system.recordAllOps')}</p>
+                <p className="text-xs dg-text-muted">{t('system.recordAllOpsDesc')}</p>
               </div>
               <Switch
                 checked={auditRecordAll}
@@ -177,9 +172,9 @@ export function SystemSettingsTab(props: SystemSettingsTabProps) {
             </div>
             <div className="flex items-center justify-between gap-3">
               <div className="min-w-0">
-                <p className="text-sm font-medium text-[var(--dg-text-primary)]">日志保留时间</p>
+                <p className="text-sm font-medium text-[var(--dg-text-primary)]">{t('system.logRetention')}</p>
                 <p className="text-xs dg-text-muted">
-                  应用后立即清理超期记录；之后每天自动检查
+                  {t('system.logRetentionHint')}
                 </p>
                 {auditLastCleanupText && (
                   <p className="text-xs dg-text-muted mt-1">{auditLastCleanupText}</p>
@@ -212,10 +207,10 @@ export function SystemSettingsTab(props: SystemSettingsTabProps) {
                 {auditApplying ? (
                   <>
                     <Loader2 className="h-3.5 w-3.5 mr-1.5 animate-spin" />
-                    应用中...
+                    {t('system.applyingDot')}
                   </>
                 ) : (
-                  '应用'
+                  t('common.apply')
                 )}
               </Button>
             </div>
@@ -226,18 +221,18 @@ export function SystemSettingsTab(props: SystemSettingsTabProps) {
           <CardHeader>
             <CardTitle className="text-[var(--dg-text-primary)] flex items-center gap-2">
               <Settings className="h-5 w-5 dg-text-purple" />
-              系统信息
+              {t('system.systemInfo')}
             </CardTitle>
-            <CardDescription className="dg-text-muted">版本与系统状态</CardDescription>
+            <CardDescription className="dg-text-muted">{t('system.systemInfoDesc')}</CardDescription>
           </CardHeader>
           <CardContent className="space-y-4">
             <div className="flex items-center justify-between">
-              <span className="text-sm dg-text-secondary">系统版本</span>
+              <span className="text-sm dg-text-secondary">{t('system.systemVersion')}</span>
               <span className="text-sm text-[var(--dg-text-primary)]">v2.5.1</span>
             </div>
             <div className="flex items-center justify-between">
-              <span className="text-sm dg-text-secondary">运行时间</span>
-              <span className="text-sm text-[var(--dg-text-primary)]">30天 12小时</span>
+              <span className="text-sm dg-text-secondary">{t('system.uptime')}</span>
+              <span className="text-sm text-[var(--dg-text-primary)]">{t('system.uptimeValue')}</span>
             </div>
           </CardContent>
         </Card>
@@ -250,29 +245,29 @@ export function SystemSettingsTab(props: SystemSettingsTabProps) {
           <CardHeader>
             <CardTitle className="text-[var(--dg-text-primary)] flex items-center gap-2">
               <Lock className="h-5 w-5 dg-text-blue" />
-              安全设置
+              {t('system.security')}
             </CardTitle>
-            <CardDescription className="dg-text-muted">密码策略与登录安全（规划中）</CardDescription>
+            <CardDescription className="dg-text-muted">{t('system.securityDesc')}</CardDescription>
           </CardHeader>
           <CardContent className="space-y-4">
             <div className="flex items-center justify-between">
               <div>
-                <p className="text-sm font-medium text-[var(--dg-text-primary)]">强制密码复杂度</p>
-                <p className="text-xs dg-text-muted">要求密码包含大小写字母、数字和特殊字符</p>
+                <p className="text-sm font-medium text-[var(--dg-text-primary)]">{t('system.forcePasswordComplexity')}</p>
+                <p className="text-xs dg-text-muted">{t('system.forcePasswordComplexityDesc')}</p>
               </div>
               <Switch disabled className="data-[state=checked]:bg-blue-600" />
             </div>
             <div className="flex items-center justify-between">
               <div>
-                <p className="text-sm font-medium text-[var(--dg-text-primary)]">登录失败锁定</p>
-                <p className="text-xs dg-text-muted">连续5次登录失败锁定账户30分钟</p>
+                <p className="text-sm font-medium text-[var(--dg-text-primary)]">{t('system.loginLockout')}</p>
+                <p className="text-xs dg-text-muted">{t('system.loginLockoutDesc')}</p>
               </div>
               <Switch disabled defaultChecked className="data-[state=checked]:bg-blue-600" />
             </div>
             <div className="flex items-center justify-between">
               <div>
-                <p className="text-sm font-medium text-[var(--dg-text-primary)]">双因素认证</p>
-                <p className="text-xs dg-text-muted">启用后需要手机验证码登录</p>
+                <p className="text-sm font-medium text-[var(--dg-text-primary)]">{t('system.twoFactor')}</p>
+                <p className="text-xs dg-text-muted">{t('system.twoFactorDesc')}</p>
               </div>
               <Switch disabled className="data-[state=checked]:bg-blue-600" />
             </div>
@@ -283,32 +278,32 @@ export function SystemSettingsTab(props: SystemSettingsTabProps) {
           <CardHeader>
             <CardTitle className="text-[var(--dg-text-primary)] flex items-center gap-2">
               <Key className="h-5 w-5 dg-text-yellow" />
-              会话设置
+              {t('system.sessionSettings')}
             </CardTitle>
-            <CardDescription className="dg-text-muted">会话超时与 Token 配置（规划中）</CardDescription>
+            <CardDescription className="dg-text-muted">{t('system.sessionSettingsDesc')}</CardDescription>
           </CardHeader>
           <CardContent className="space-y-4">
             <div className="flex items-center justify-between">
               <div>
-                <p className="text-sm font-medium text-[var(--dg-text-primary)]">会话超时时间</p>
-                <p className="text-xs dg-text-muted">用户无操作30分钟后自动登出</p>
+                <p className="text-sm font-medium text-[var(--dg-text-primary)]">{t('system.sessionTimeoutTime')}</p>
+                <p className="text-xs dg-text-muted">{t('system.sessionTimeoutDesc')}</p>
               </div>
               <Select defaultValue="30" disabled>
                 <SelectTrigger className="w-32 h-8 dg-input">
                   <SelectValue />
                 </SelectTrigger>
                 <SelectContent className="dg-input">
-                  <SelectItem value="15">15分钟</SelectItem>
+                  <SelectItem value="15">{t('monitor.traceMgr.min15')}</SelectItem>
                   <SelectItem value="30">30分钟</SelectItem>
-                  <SelectItem value="60">1小时</SelectItem>
+                  <SelectItem value="60">{t('monitor.traceMgr.hour1')}</SelectItem>
                   <SelectItem value="120">2小时</SelectItem>
                 </SelectContent>
               </Select>
             </div>
             <div className="flex items-center justify-between">
               <div>
-                <p className="text-sm font-medium text-[var(--dg-text-primary)]">单点登录</p>
-                <p className="text-xs dg-text-muted">同一账号只能在一个设备登录</p>
+                <p className="text-sm font-medium text-[var(--dg-text-primary)]">{t('system.sso')}</p>
+                <p className="text-xs dg-text-muted">{t('system.singleSignOnDesc')}</p>
               </div>
               <Switch disabled className="data-[state=checked]:bg-blue-600" />
             </div>
@@ -327,40 +322,14 @@ export function SystemSettingsTab(props: SystemSettingsTabProps) {
                 <Network className="h-5 w-5 dg-text-cyan" />
                 LDAP / Active Directory
               </CardTitle>
-              <CardDescription className="dg-text-muted mt-1">配置 LDAP 服务器，实现统一身份认证</CardDescription>
+              <CardDescription className="dg-text-muted mt-1">{t('system.ldapConfigHint')}</CardDescription>
             </div>
           </div>
         </CardHeader>
         <CardContent>
           <div className="grid grid-cols-1 md:grid-cols-2 xl:grid-cols-3 gap-4">
             <div className="space-y-1.5">
-              <label className="text-xs dg-text-muted">目录类型</label>
-              <Select
-                value={ldapForm.server_type}
-                onValueChange={(v: LdapServerType) => {
-                  const isAD = v === 'ad';
-                  setLdapForm({
-                    ...ldapForm,
-                    server_type: v,
-                    ldap_port: isAD && ldapForm.ldap_port === 389 ? 389 : ldapForm.ldap_port,
-                    search_filter: ldapForm.search_filter || (isAD ? '(sAMAccountName=%s)' : '(uid=%s)'),
-                    user_mapping: isAD
-                      ? { username: 'sAMAccountName', email: 'mail', display_name: 'displayName' }
-                      : { username: 'uid', email: 'mail', display_name: 'cn' },
-                  });
-                }}
-              >
-                <SelectTrigger className="dg-input">
-                  <SelectValue />
-                </SelectTrigger>
-                <SelectContent className="dg-input">
-                  <SelectItem value="openldap">OpenLDAP</SelectItem>
-                  <SelectItem value="ad">Active Directory</SelectItem>
-                </SelectContent>
-              </Select>
-            </div>
-            <div className="space-y-1.5">
-              <label className="text-xs dg-text-muted">LDAP 服务器地址</label>
+              <label className="text-xs dg-text-muted">{t('system.ldapServerAddr')}</label>
               <Input
                 value={ldapForm.ldap_host}
                 onChange={(e) => setLdapForm({ ...ldapForm, ldap_host: e.target.value })}
@@ -369,7 +338,7 @@ export function SystemSettingsTab(props: SystemSettingsTabProps) {
               />
             </div>
             <div className="space-y-1.5">
-              <label className="text-xs dg-text-muted">端口</label>
+              <label className="text-xs dg-text-muted">{t('system.ldapPort')}</label>
               <Input
                 type="number"
                 value={ldapForm.ldap_port}
@@ -379,25 +348,25 @@ export function SystemSettingsTab(props: SystemSettingsTabProps) {
               />
             </div>
             <div className="space-y-1.5 col-span-2">
-              <label className="text-xs dg-text-muted">Base DN（用户搜索基础）</label>
+              <label className="text-xs dg-text-muted">{t('system.baseDnHint')}</label>
               <Input
                 value={ldapForm.base_dn}
                 onChange={(e) => setLdapForm({ ...ldapForm, base_dn: e.target.value })}
                 className="dg-input"
-                placeholder={ldapForm.server_type === 'ad' ? 'DC=example,DC=com' : 'ou=users,dc=example,dc=com'}
+                placeholder="ou=users,dc=example,dc=com"
               />
             </div>
             <div className="space-y-1.5">
-              <label className="text-xs dg-text-muted">管理员 Bind DN</label>
+              <label className="text-xs dg-text-muted">{t('system.adminBindDn')}</label>
               <Input
                 value={ldapForm.admin_dn}
                 onChange={(e) => setLdapForm({ ...ldapForm, admin_dn: e.target.value })}
                 className="dg-input"
-                placeholder={ldapForm.server_type === 'ad' ? 'CN=admin,CN=Users,DC=example,DC=com' : 'cn=admin,dc=example,dc=com'}
+                placeholder="cn=admin,dc=example,dc=com"
               />
             </div>
             <div className="space-y-1.5">
-              <label className="text-xs dg-text-muted">管理员密码 {ldapConfig && '（留空不修改）'}</label>
+              <label className="text-xs dg-text-muted">管理员密码 {ldapConfig && t('system.leaveBlankNoModify')}</label>
               <Input
                 type="password"
                 value={ldapForm.admin_password}
@@ -407,48 +376,12 @@ export function SystemSettingsTab(props: SystemSettingsTabProps) {
               />
             </div>
             <div className="space-y-1.5 col-span-2">
-              <label className="text-xs dg-text-muted">搜索过滤器（可选，用 %s 代表用户名）</label>
+              <label className="text-xs dg-text-muted">{t('system.searchFilterHint')}</label>
               <Input
                 value={ldapForm.search_filter}
                 onChange={(e) => setLdapForm({ ...ldapForm, search_filter: e.target.value })}
                 className="dg-input"
-                placeholder={ldapForm.server_type === 'ad' ? '(sAMAccountName=%s)' : '(uid=%s)'}
-              />
-            </div>
-            <div className="space-y-1.5">
-              <label className="text-xs dg-text-muted">用户名字段</label>
-              <Input
-                value={ldapForm.user_mapping.username}
-                onChange={(e) => setLdapForm({
-                  ...ldapForm,
-                  user_mapping: { ...ldapForm.user_mapping, username: e.target.value },
-                })}
-                className="dg-input"
-                placeholder={ldapForm.server_type === 'ad' ? 'sAMAccountName' : 'uid'}
-              />
-            </div>
-            <div className="space-y-1.5">
-              <label className="text-xs dg-text-muted">邮箱字段</label>
-              <Input
-                value={ldapForm.user_mapping.email}
-                onChange={(e) => setLdapForm({
-                  ...ldapForm,
-                  user_mapping: { ...ldapForm.user_mapping, email: e.target.value },
-                })}
-                className="dg-input"
-                placeholder="mail"
-              />
-            </div>
-            <div className="space-y-1.5">
-              <label className="text-xs dg-text-muted">显示名字段</label>
-              <Input
-                value={ldapForm.user_mapping.display_name}
-                onChange={(e) => setLdapForm({
-                  ...ldapForm,
-                  user_mapping: { ...ldapForm.user_mapping, display_name: e.target.value },
-                })}
-                className="dg-input"
-                placeholder={ldapForm.server_type === 'ad' ? 'displayName' : 'cn'}
+                placeholder="(uid=%s)"
               />
             </div>
             <div className="flex items-center gap-2 col-span-2">
@@ -457,10 +390,7 @@ export function SystemSettingsTab(props: SystemSettingsTabProps) {
                 onCheckedChange={(v) => setLdapForm({ ...ldapForm, use_ldaps: v })}
                 className="data-[state=checked]:bg-blue-600"
               />
-              <span className="text-sm text-[var(--dg-text-secondary)]">启用 LDAPS（SSL 加密）</span>
-              {ldapForm.server_type === 'ad' && (
-                <span className="text-xs dg-text-muted">AD 创建用户必须启用 LDAPS</span>
-              )}
+              <span className="text-sm text-[var(--dg-text-secondary)]">{t('system.enableLdaps')}</span>
             </div>
           </div>
 
@@ -488,7 +418,7 @@ export function SystemSettingsTab(props: SystemSettingsTabProps) {
                 onClick={handleLdapSave}
                 disabled={ldapSaving}
               >
-                {ldapSaving ? '保存中...' : '保存配置'}
+                {ldapSaving ? t('k8s.topology.saving') : t('aiops.llmSave')}
               </Button>
             </div>
           </div>