Add dark workbench dashboard with host CPU/memory gauges.

Sample Windows CPU via Processor Utility so values match Task Manager, and expose host metrics on /v1/metrics/json for the workbench poll.

Co-authored-by: Cursor <cursoragent@cursor.com>

web/src/i18n/zh.ts

@@ -24,6 +24,55 @@ const zh = {
     monitoring: "监控",
     operations: "运维",
     system: "系统管理",
+    welcomeEyebrow: "工作台",
+    welcomeTitle: "欢迎回来，{{name}}",
+    welcomeSub: "在此总览同步、拓扑与后台任务状态。",
+    today: "今天 · {{date}}",
+    kpi: {
+      uptime: "API 运行时长",
+      health: "系统健康",
+      tasks: "进行中任务",
+      healthOk: "调度正常",
+      healthWarn: "请检查调度",
+      healthUnknown: "指标暂不可用",
+    },
+    statusTitle: "运行状态",
+    announceTitle: "系统公告",
+    recentTitle: "最近操作",
+    recentMore: "查看全部",
+    quickTitle: "快捷操作",
+    emptyRecent: "暂无操作记录。",
+    gauge: {
+      cpu: "CPU",
+      mem: "内存",
+      cli: "CLI 并发",
+      db: "数据库连接",
+      webcrt: "WebCRT",
+      tasks: "活跃任务",
+      low: "低负载",
+      normal: "正常",
+      high: "繁忙",
+    },
+    quick: {
+      tasks: "任务概览",
+      logs: "操作日志",
+      users: "用户管理",
+      apiKeys: "API Key",
+    },
+    announce: {
+      a1: "深色工作台已上线，其它模块将沿用同一套深色体系。",
+      a1Date: "2026-08-04",
+      a2: "LLDP 采集支持暂停/继续/停止；进程重启后会自动续跑。",
+      a2Date: "2026-08-04",
+      a3: "配置同步与 LLDP 看板在任务运行中可实时刷新 KPI。",
+      a3Date: "2026-08-03",
+    },
+    recentCols: {
+      action: "操作内容",
+      module: "模块",
+      time: "时间",
+      user: "用户",
+    },
     cards: {
       umeSync: "UME同步",
       umeSyncDesc: "UME 告警同步、订阅与清单",