feat(i18n): 全量中英文国际化改造

- 翻译 en-US.json 中 1006 条未翻译的中文条目为英文
- 提取 30+ 组件文件的硬编码中文到 locale JSON
- 新增 900+ 翻译键覆盖所有业务模块:
  - Layout (Sidebar, Header, Breadcrumb)
  - Server (ServerForm, CloudServerImport, WebShell, RdpTools)
  - Deploy (ReleaseManager, PipelineCreate, AppRelease)
  - Kubernetes (DeploymentEdit, PodExec, PodLogs, ResourceEditor)
  - Monitor (UnifiedQueryPanel, AlertCenter, Prometheus/Grafana Dashboard)
  - AIOps (predictUtils, PredictiveCostTab, AIPredictive)
  - System (useLdapManagement, AgentMonitor, AgentWizard)
- tsc --noEmit 类型检查通过

frontend/src/components/kubernetes/ResourceVisualEditor.tsx

@@ -335,7 +335,7 @@ function ConfigMapEditor({ manifest, onSave, saving, isCreate }: { manifest: any
               <Textarea
                 value={entry.value}
                 onChange={e => update(i, 'value', e.target.value)}
-                placeholder="值"
+                placeholder=i18n.t('k8s.resourceEditor.sfe7509e0')
                 rows={expandAll || entry.value.length > 300 ? 10 : (entry.value.length > 100 ? 6 : 3)}
                 className="flex-[2] font-mono text-xs min-h-[70px] max-h-[420px] resize-y bg-[var(--dg-bg-tertiary)] border-[var(--dg-border)] text-[var(--dg-text-primary)] leading-relaxed"
               />