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/agent/AgentMonitor.tsx

@@ -23,7 +23,6 @@ import {
 } from '@/components/ui/dialog';
 
 import {
-import { useTranslation } from 'react-i18next';
   Cpu,
   MemoryStick,
   HardDrive,
@@ -42,7 +41,6 @@ import { useTranslation } from 'react-i18next';
 // ============ 组件 ============
 
 export function AgentMonitor() {
-  const { t } = useTranslation();
   const [hosts, setHosts] = useState<AgentHostRecord[]>([]);
   const [loading, setLoading] = useState(true);
   const [refreshing, setRefreshing] = useState(false);
@@ -70,7 +68,7 @@ export function AgentMonitor() {
         if (fresh) setSelectedHost(fresh);
       }
     } catch (err) {
-      if (!silent) toast.error(t('agent.agentmonitor.s5760f6'));
+      if (!silent) toast.error('加载主机列表失败');
       console.error(err);
     } finally {
       setLoading(false);
@@ -99,7 +97,7 @@ export function AgentMonitor() {
   // 提交远程命令（直连 SSH 即时返回）
   const submitCommand = async () => {
     if (!cmdCommand.trim()) {
-      toast.error(t('agent.agentmonitor.s9358aa'));
+      toast.error('请输入要执行的命令');
       return;
     }
     setCmdSubmitting(true);
@@ -113,11 +111,11 @@ export function AgentMonitor() {
       const resData = (res?.data ?? {}) as Record<string, unknown>;
       setCmdResult({
         status: res?.code === 200 ? 'completed' : 'failed',
-        result: (resData.output as string) || (res?.message as string) || t('agent.agentmonitor.s26d45b'),
+        result: (resData.output as string) || (res?.message as string) || '无输出',
         error: resData.error as string | undefined,
       });
     } catch (err) {
-      setCmdResult({ status: 'failed', result: err?.message || t('automation.scriptFailed') });
+      setCmdResult({ status: 'failed', result: err?.message || '执行失败' });
     } finally {
       setCmdSubmitting(false);
       loadLatest(true);
@@ -131,9 +129,9 @@ export function AgentMonitor() {
   const onlineCount = hosts.filter((h) => isOnline(h.last_report || h.last_reported_at || h.updated_at)).length;
 
   const stats = [
-    { label: t('agent.agentmonitor.sd94cd2'), value: hosts.length, icon: Server, color: 'dg-text-blue' },
-    { label: t('common.online'), value: onlineCount, icon: Wifi, color: 'dg-text-green' },
-    { label: t('common.offline'), value: hosts.length - onlineCount, icon: WifiOff, color: 'dg-text-red' },
+    { label: '主机总数', value: hosts.length, icon: Server, color: 'dg-text-blue' },
+    { label: '在线', value: onlineCount, icon: Wifi, color: 'dg-text-green' },
+    { label: '离线', value: hosts.length - onlineCount, icon: WifiOff, color: 'dg-text-red' },
   ];
 
   return (
@@ -141,8 +139,8 @@ export function AgentMonitor() {
       {/* 页头 */}
       <div className="flex items-center justify-between">
         <div>
-          <h2 className="text-xl font-semibold text-[var(--dg-text-primary)]">{t('agent.agentMonitor')}</h2>
-          <p className="text-sm dg-text-secondary mt-0.5">{t('agent.agentmonitor.sa75d75')}</p>
+          <h2 className="text-xl font-semibold text-[var(--dg-text-primary)]">Agent 监控</h2>
+          <p className="text-sm dg-text-secondary mt-0.5">实时监控 Agent 上报的主机指标</p>
         </div>
         <div className="flex items-center gap-2">
           <Button
@@ -188,14 +186,14 @@ export function AgentMonitor() {
         <Card className="dg-card">
           <CardContent className="flex items-center justify-center py-16">
             <Loader2 className="h-6 w-6 animate-spin dg-text-muted" />
-            <span className="ml-2 dg-text-secondary">{t('common.loading')}</span>
+            <span className="ml-2 dg-text-secondary">加载中...</span>
           </CardContent>
         </Card>
       ) : hosts.length === 0 ? (
         <Card className="dg-card">
           <CardContent className="flex flex-col items-center justify-center py-16">
             <Server className="h-10 w-10 dg-text-muted mb-3" />
-            <p className="dg-text-secondary">{t('agent.noAgentData')}</p>
+            <p className="dg-text-secondary">暂无 Agent 上报数据</p>
             <Button
               size="sm"
               onClick={() => setWizardOpen(true)}
@@ -242,8 +240,8 @@ export function AgentMonitor() {
                   {/* 指标条 */}
                   <div className="space-y-2">
                     <MetricBar icon={Cpu} label="CPU" value={cpu} />
-                    <MetricBar icon={MemoryStick} label=t('k8s.pods.memory') value={mem} />
-                    <MetricBar icon={HardDrive} label=t('dashboard.topUsage.disk') value={disk} />
+                    <MetricBar icon={MemoryStick} label="内存" value={mem} />
+                    <MetricBar icon={HardDrive} label="磁盘" value={disk} />
                   </div>
 
                   {/* 端口 & 时间 */}
@@ -309,7 +307,7 @@ export function AgentMonitor() {
           <div className="space-y-3">
             <div className="grid grid-cols-2 gap-3">
               <div className="space-y-1.5">
-                <Label className="text-[var(--dg-text-secondary)] text-xs">{t('agent.installTarget')}</Label>
+                <Label className="text-[var(--dg-text-secondary)] text-xs">目标主机</Label>
                 <Input
                   value={cmdHost}
                   onChange={(e) => setCmdHost(e.target.value)}
@@ -320,18 +318,18 @@ export function AgentMonitor() {
             </div>
 
             <div className="space-y-1.5">
-              <Label className="text-[var(--dg-text-secondary)] text-xs">{t('system.terminalCommand')}</Label>
+              <Label className="text-[var(--dg-text-secondary)] text-xs">命令</Label>
               <Textarea
                 value={cmdCommand}
                 onChange={(e) => setCmdCommand(e.target.value)}
-                placeholder=t('agent.agentmonitor.s6e62a5')
+                placeholder="例如：free -m && df -h"
                 rows={3}
                 className="bg-[var(--dg-bg-primary)] border-[var(--dg-border)] text-[var(--dg-text-primary)] font-mono text-sm resize-none"
               />
             </div>
 
             <div className="w-40 space-y-1.5">
-              <Label className="text-[var(--dg-text-secondary)] text-xs">{t('monitor.probeTimeout')}</Label>
+              <Label className="text-[var(--dg-text-secondary)] text-xs">超时(秒)</Label>
               <Input
                 type="number"
                 value={cmdTimeout}
@@ -344,7 +342,7 @@ export function AgentMonitor() {
             {cmdResult && (
               <div className="space-y-1.5">
                 <div className="flex items-center gap-2">
-                  <Label className="text-[var(--dg-text-secondary)] text-xs">{t('automation.execResult')}</Label>
+                  <Label className="text-[var(--dg-text-secondary)] text-xs">执行结果</Label>
                   <Badge
                     className={
                       cmdResult.status === 'success' || cmdResult.status === 'done' || cmdResult.status === 'completed'
@@ -358,7 +356,7 @@ export function AgentMonitor() {
                   </Badge>
                 </div>
                 <pre className="text-xs text-[var(--dg-text-secondary)] font-mono whitespace-pre-wrap break-all bg-[var(--dg-bg-primary)] border border-[var(--dg-border)] rounded-lg p-3 max-h-48 overflow-auto">
-                  {cmdResult.result || cmdResult.output || cmdResult.error || t('agent.agentmonitor.s26d45b')}
+                  {cmdResult.result || cmdResult.output || cmdResult.error || '无输出'}
                 </pre>
               </div>
             )}
@@ -374,9 +372,9 @@ export function AgentMonitor() {
               className="bg-blue-600 hover:bg-blue-700 text-white"
             >
               {cmdSubmitting ? (
-                <><Loader2 className="h-4 w-4 mr-1.5 animate-spin" />{t('common.executing')}</>
+                <><Loader2 className="h-4 w-4 mr-1.5 animate-spin" />执行中</>
               ) : (
-                <><Terminal className="h-4 w-4 mr-1.5" />{t('common.execute')}</>
+                <><Terminal className="h-4 w-4 mr-1.5" />执行</>
               )}
             </Button>
           </DialogFooter>
@@ -391,7 +389,6 @@ export function AgentMonitor() {
 
 // ============ 指标条子组件 ============
 function MetricBar({ icon: Icon, label, value }: { icon: ComponentType<{ className?: string }>; label: string; value: number }) {
-  const { t } = useTranslation();
   return (
     <div className="flex items-center gap-2">
       <Icon className="h-3.5 w-3.5 dg-text-muted shrink-0" />