feat(i18n): 安全批量转换 135 文件 — 覆盖率 34%→62%

使用 i18n.t() 全局方式（避免 hook 定位问题）:
- 288 目标文件中 135 个成功转换
- 2228 处中文替换为 i18n.t() 调用
- 1006 个新翻译 key 添加到 zh-CN.json + en-US.json
- 词典总量: 3554 keys (22 namespaces)
- tsc 零错误 + Vite 构建成功
- 6 个含代码示例/数据字符串的文件安全回退

frontend/src/components/kubernetes/NamespaceManagementPage.tsx

@@ -19,6 +19,7 @@ import { toast } from 'sonner';
 import { PageShell } from '@/components/layout/PageShell';
 import { ContentPanel } from '@/components/layout/ContentPanel';
 import { StatStrip } from '@/components/ui/stat-strip';
+import i18n from '@/i18n';
 
 interface NamespaceDetail {
   name: string;
@@ -78,7 +79,7 @@ export default function NamespaceManagementPage() {
       setCreateOpen(false);
       await loadData();
     } catch (err) {
-      toast.error(err?.message || '创建失败');
+      toast.error(err?.message || i18n.t('monitor.dashboard.custom.toastCreateFailed'));
     } finally {
       setCreating(false);
     }
@@ -92,7 +93,7 @@ export default function NamespaceManagementPage() {
       setDeleteTarget(null);
       await loadData();
     } catch (err) {
-      toast.error(err?.message || '删除失败');
+      toast.error(err?.message || i18n.t('kubernetes.msg.deleteFailed2'));
     } finally {
       setDeleting(false);
     }
@@ -111,7 +112,7 @@ export default function NamespaceManagementPage() {
     <Input
       value={searchQuery}
       onChange={(e) => setSearchQuery(e.target.value)}
-      placeholder="搜索命名空间..."
+      placeholder={i18n.t('kubernetes.namespacemanage.se91247a0')}
       className="max-w-xs dg-input"
     />
   );
@@ -119,17 +120,17 @@ export default function NamespaceManagementPage() {
   return (
     <PageShell
       variant="list"
-      title="命名空间管理"
+      title={i18n.t('kubernetes.namespacemanage.se935a33d')}
       subtitle={`${clusterCode} · 资源配额与生命周期管理`}
       icon={<Boxes className="h-5 w-5" />}
       metrics={!loading ? (
         <StatStrip
           items={[
-            { label: '命名空间', value: namespaces.length, color: 'green' },
+            { label: i18n.t('kubernetes.namespace.title'), value: namespaces.length, color: 'green' },
             { label: 'Deployments', value: totalDeploys, color: 'blue' },
             { label: 'Pods', value: totalPods, color: 'purple' },
             { label: 'Services', value: totalSvcs, color: 'cyan' },
-            { label: '配额限制', value: quotaCount, color: 'amber' },
+            { label: i18n.t('kubernetes.namespacemanage.s47c3aee9'), value: quotaCount, color: 'amber' },
           ]}
         />
       ) : undefined}
@@ -147,15 +148,15 @@ export default function NamespaceManagementPage() {
             </DialogTrigger>
             <DialogContent>
               <DialogHeader>
-                <DialogTitle>创建命名空间</DialogTitle>
+                <DialogTitle> {i18n.t('kubernetes.namespacemanage.s737f41e9')} </DialogTitle>
               </DialogHeader>
               <div className="space-y-4 py-4">
                 <div className="space-y-2">
-                  <Label>命名空间名称</Label>
+                  <Label> {i18n.t('kubernetes.namespace.namespaceName')} </Label>
                   <Input
                     value={newName}
                     onChange={(e) => setNewName(e.target.value)}
-                    placeholder="例如: my-app"
+                    placeholder={i18n.t('kubernetes.namespacemanage.scba00862')}
                     onKeyDown={(e) => e.key === 'Enter' && handleCreate()}
                   />
                   <p className="text-xs text-[var(--dg-text-muted)]">
@@ -164,7 +165,7 @@ export default function NamespaceManagementPage() {
                 </div>
               </div>
               <DialogFooter>
-                <Button variant="outline" onClick={() => setCreateOpen(false)}>取消</Button>
+                <Button variant="outline" onClick={() => setCreateOpen(false)}> {i18n.t('rbac.jobRole.cancel')} </Button>
                 <Button onClick={handleCreate} disabled={creating || !newName.trim()}>
                   {creating ? <Loader2 className="h-4 w-4 animate-spin mr-1" /> : null}
                   创建
@@ -179,15 +180,15 @@ export default function NamespaceManagementPage() {
           <Table>
             <TableHeader>
               <TableRow className="border-[var(--dg-border)] hover:bg-transparent">
-                <TableHead className="text-[var(--dg-text-secondary)]">名称</TableHead>
-                <TableHead className="text-[var(--dg-text-secondary)]">状态</TableHead>
-                <TableHead className="text-[var(--dg-text-secondary)]">年龄</TableHead>
+                <TableHead className="text-[var(--dg-text-secondary)]"> {i18n.t('kubernetes.secret.secretName')} </TableHead>
+                <TableHead className="text-[var(--dg-text-secondary)]"> {i18n.t('system.terminalStatus')} </TableHead>
+                <TableHead className="text-[var(--dg-text-secondary)]"> {i18n.t('kubernetes.namespacemanage.sa01a9963')} </TableHead>
                 <TableHead className="text-[var(--dg-text-secondary)] text-center">Deploy</TableHead>
                 <TableHead className="text-[var(--dg-text-secondary)] text-center">Pods</TableHead>
                 <TableHead className="text-[var(--dg-text-secondary)] text-center">Svc</TableHead>
-                <TableHead className="text-[var(--dg-text-secondary)] text-center">配额</TableHead>
-                <TableHead className="text-[var(--dg-text-secondary)]">标签</TableHead>
-                <TableHead className="text-[var(--dg-text-secondary)] text-center">操作</TableHead>
+                <TableHead className="text-[var(--dg-text-secondary)] text-center"> {i18n.t('common.quota')} </TableHead>
+                <TableHead className="text-[var(--dg-text-secondary)]"> {i18n.t('kubernetes.namespace.labels')} </TableHead>
+                <TableHead className="text-[var(--dg-text-secondary)] text-center"> {i18n.t('system.auditAction')} </TableHead>
               </TableRow>
             </TableHeader>
             <TableBody>
@@ -247,13 +248,13 @@ export default function NamespaceManagementPage() {
                       </TableCell>
                       <TableCell className="text-center">
                         {isSystem ? (
-                          <span className="text-xs text-[var(--dg-text-muted)]">系统</span>
+                          <span className="text-xs text-[var(--dg-text-muted)]"> {i18n.t('common.system3')} </span>
                         ) : (
                           <Button
                             variant="ghost" size="icon"
                             className="h-7 w-7 text-[var(--dg-red)] hover:text-[var(--dg-red)] hover:bg-[var(--dg-red)]/10"
                             onClick={() => setDeleteTarget(ns.name)}
-                            title="删除命名空间"
+                            title={i18n.t('kubernetes.namespace.deleteNamespace')}
                           >
                             <Trash2 className="h-3.5 w-3.5" />
                           </Button>
@@ -286,7 +287,7 @@ export default function NamespaceManagementPage() {
             </div>
           </div>
           <DialogFooter>
-            <Button variant="outline" onClick={() => setDeleteTarget(null)}>取消</Button>
+            <Button variant="outline" onClick={() => setDeleteTarget(null)}> {i18n.t('rbac.jobRole.cancel')} </Button>
             <Button variant="destructive" onClick={handleDelete} disabled={deleting}>
               {deleting ? <Loader2 className="h-4 w-4 animate-spin mr-1" /> : null}
               确认删除