feat(i18n): 增量国际化迁移 — deploy/kubernetes/monitor/task 全模块 + 补全 28 缺失翻译键

迁移范围:
- deploy 模块 (PipelineEditor/PipelineDetailDialog/PipelineFormDialog/PipelineRunDialog/ReleaseCreateDialog/ReleaseDetailDialog/ReleaseManager/ToolConfigTab/JobRoleCreateDialog 等 14 文件)
- kubernetes 模块 (YamlEditorToolbar/DeploymentHpaTab/DeploymentLogsTab/DeploymentPodsTab/DnsHostSection/SchedulingSection/EventsTab/HPACronHPATab/HistoryTab/PodsTab/ServicesTab/ActionModals 等 12 文件)
- monitor 模块 (AlertEventsTab/AlertCenterDetail/DatasourcePage/LogAlertBell/LogCenter/LogCenterArchBanner/StatChartPanel/LogRoleCreateDialog 等 8 文件)
- task 模块 (CronJobStatsPanel/CronJobTable/CronJobViewDialog/ExecutionHistoryDialog 4 文件)
- layout (PageEmpty/PageLoading 2 文件)
- site-monitor/snmp-monitor 模块 (6 文件)

翻译键: 3975 → 4003 (+28 缺失键补全), 22 命名空间, zh-CN/en-US 完全对齐
新增命名空间: agent/aiops/cloud/kubernetes/monitor/pipeline/rbac/system/task/ui

验证: go build✅ tsc -b=0 npm build✅ (20.78s) 17/17 集成测试通过

frontend/src/components/monitor/datasource/DatasourcePage.tsx

@@ -1,5 +1,6 @@
 // 数据源管理页面 — Prometheus + Zabbix 双 Tab // Logan.Li
 import { useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import { Database } from 'lucide-react';
 import { PageShell } from '@/components/layout/PageShell';
 import PrometheusDatasourceManager from '@/components/monitor/datasource/PrometheusDatasourceManager';
@@ -7,6 +8,7 @@ import ZabbixDatasourceManager from '@/components/monitor/datasource/ZabbixDatas
 
 export default function DatasourcePage() {
   const [activeTab, setActiveTab] = useState('prometheus');
+  const { t } = useTranslation();
 
   const pageTabs = [
     { id: 'prometheus', label: 'Prometheus' },
@@ -16,8 +18,8 @@ export default function DatasourcePage() {
   return (
     <PageShell
       variant="list"
-      title="数据源管理"
-      subtitle="管理 Prometheus 与 Zabbix 监控数据源"
+      title={t('monitor.datasource.manageTitle')}
+      subtitle={t('monitor.datasource.manageSubtitle')}
       icon={<Database className="h-5 w-5" />}
       tabs={pageTabs}
       activeTab={activeTab}