webui sidebar: optimize left menu layout with grouped cards and tighter nav styling

webui/src/i18n/index.ts

@@ -15,6 +15,9 @@ const resources = {
       memory: 'Memory',
       taskAudit: 'Task Audit',
       tasks: 'Tasks',
+      sidebarCore: 'Core',
+      sidebarSystem: 'System',
+      sidebarOps: 'Operations',
       taskList: 'Task List',
       taskDetail: 'Task Detail',
       taskQueue: 'Task Queue',
@@ -185,6 +188,9 @@ const resources = {
       memory: '记忆文件',
       taskAudit: '任务审计',
       tasks: '任务管理',
+      sidebarCore: '核心',
+      sidebarSystem: '系统',
+      sidebarOps: '运维',
       taskList: '任务列表',
       taskDetail: '任务详情',
       taskQueue: '任务队列',