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/snmp-monitor/SnmpOverviewCharts.tsx

@@ -9,6 +9,7 @@ import { BarChart3, PieChart as PieChartIcon } from 'lucide-react';
 import type { SnmpDevice, SnmpOverviewItem } from './helpers';
 import { fmtMetricValue, statusColor } from './helpers';
 import { MonitorChartTooltip, MONITOR_PIE_STROKE, MonitorPieTooltip } from '../shared/monitorChartTheme';
+import { useTranslation } from 'react-i18next';
 
 interface Props {
   devices: SnmpDevice[];
@@ -16,14 +17,15 @@ interface Props {
 }
 
 export function SnmpOverviewCharts({ devices, overview }: Props) {
+  const { t } = useTranslation();
   const statusData = useMemo(() => {
     const online = devices.filter((d) => d.status === 'online').length;
     const error = devices.filter((d) => d.status === 'error').length;
     const offline = devices.length - online - error;
     return [
-      { name: '在线', value: online, fill: 'var(--dg-green)' },
-      { name: '异常', value: error, fill: 'var(--dg-red)' },
-      { name: '离线', value: offline, fill: 'var(--dg-text-muted)' },
+      { name: t('common.online'), value: online, fill: 'var(--dg-green)' },
+      { name: t('common.abnormal'), value: error, fill: 'var(--dg-red)' },
+      { name: t('common.offline'), value: offline, fill: 'var(--dg-text-muted)' },
     ].filter((d) => d.value > 0);
   }, [devices]);
 
@@ -47,10 +49,10 @@ export function SnmpOverviewCharts({ devices, overview }: Props) {
         <CardContent className="p-4">
           <div className="flex items-center gap-2 mb-3">
             <BarChart3 className="h-4 w-4 text-[var(--dg-text-muted)]" />
-            <h3 className="text-sm font-medium text-[var(--dg-text-primary)]">设备 CPU 对比</h3>
+            <h3 className="text-sm font-medium text-[var(--dg-text-primary)]">{t('monitor.snmpoverviewcharts.s64f5a4')}</h3>
           </div>
           {cpuData.length === 0 ? (
-            <p className="text-xs text-[var(--dg-text-muted)] py-8 text-center">暂无 CPU 指标，请先完成采集</p>
+            <p className="text-xs text-[var(--dg-text-muted)] py-8 text-center">{t('monitor.snmpoverviewcharts.s1f4418')}</p>
           ) : (
             <ResponsiveContainer width="100%" height={Math.max(160, cpuData.length * 36)}>
               <BarChart data={cpuData} layout="vertical" margin={{ top: 0, right: 16, left: 0, bottom: 0 }}>
@@ -98,7 +100,7 @@ export function SnmpOverviewCharts({ devices, overview }: Props) {
         <CardContent className="p-4">
           <div className="flex items-center gap-2 mb-3">
             <PieChartIcon className="h-4 w-4 text-[var(--dg-text-muted)]" />
-            <h3 className="text-sm font-medium text-[var(--dg-text-primary)]">设备状态</h3>
+            <h3 className="text-sm font-medium text-[var(--dg-text-primary)]">{t('monitor.snmpoverviewcharts.sbb0ae9')}</h3>
           </div>
           <ResponsiveContainer width="100%" height={180}>
             <PieChart>