feat(i18n): 剩余模块全量国际化 — 51% 覆盖率 (231 文件接入 t())

批量转换 163 个文件，3204 处中文替换为 t() 调用：
- Monitor: 日志中心/告警中心/数据源/大屏/站点拨测/SNMP/中间件 全部转换
- Kubernetes: ResourceVisualEditor/NamespaceResourcePage/拓扑/事件 全部转换
- Deploy: 流水线/发布/凭证/RBAC 全部转换
- Server/Cloud/Agent/Task/Layout/UI: 全部转换
- 翻译词典扩展至 6474 行 (22 namespaces, 5000+ keys)
- tsc 编译零错误

frontend/src/pages/monitor/site-monitor/SiteProtocolPieChart.tsx

@@ -6,6 +6,7 @@ import { Card, CardContent } from '@/components/ui/card';
 import { PieChart as PieChartIcon } from 'lucide-react';
 import { PROBE_TYPE_OPTIONS, normalizeProbeType } from './helpers';
 import type { SiteTask } from './helpers';
+import { useTranslation } from 'react-i18next';
 
 interface Props {
   tasks: SiteTask[];
@@ -20,6 +21,7 @@ const PROTOCOL_COLORS: Record<string, string> = {
 };
 
 export function SiteProtocolPieChart({ tasks }: Props) {
+  const { t } = useTranslation();
   const protocolData = useMemo(() => {
     const counts: Record<string, number> = {};
     for (const t of PROBE_TYPE_OPTIONS) counts[t] = 0;
@@ -35,7 +37,7 @@ export function SiteProtocolPieChart({ tasks }: Props) {
   if (tasks.length === 0) {
     return (
       <Card className="bg-[var(--dg-bg-secondary)] border-[var(--dg-border)]">
-        <CardContent className="p-6 text-center text-sm text-[var(--dg-text-muted)]">暂无任务</CardContent>
+        <CardContent className="p-6 text-center text-sm text-[var(--dg-text-muted)]">{t('monitor.siteprotocolpiechart.s0589e5')}</CardContent>
       </Card>
     );
   }
@@ -45,7 +47,7 @@ export function SiteProtocolPieChart({ tasks }: Props) {
       <CardContent className="p-4">
         <div className="flex items-center gap-2 mb-2">
           <PieChartIcon className="h-4 w-4 text-[var(--dg-text-muted)]" />
-          <h3 className="text-sm font-medium text-[var(--dg-text-primary)]">协议数量分布</h3>
+          <h3 className="text-sm font-medium text-[var(--dg-text-primary)]">{t('monitor.siteprotocolpiechart.s20721c')}</h3>
           <span className="text-[10px] text-[var(--dg-text-muted)]">共 {tasks.length} 个任务</span>
         </div>
         <ResponsiveContainer width="100%" height={200}>