feat: redesign ticket workbench ui

frontend/src/app/layout/Sidebar.tsx

@@ -1,15 +1,15 @@
 export function Sidebar() {
   const navItems = [
-    { href: '#/tickets', label: 'Tickets' },
-    { href: '#/tickets/new', label: 'Create Ticket' },
-    { href: '#/solutions', label: 'Solutions' },
-    { href: '#/design-system', label: 'Design System' }
+    { href: '#/tickets', label: '工单中心' },
+    { href: '#/tickets/new', label: '创建工单' },
+    { href: '#/solutions', label: '解决方案库' },
+    { href: '#/design-system', label: '设计系统' }
   ]
 
   return (
     <aside className="fixed inset-y-0 left-0 hidden w-64 border-r border-border bg-surface lg:block">
       <div className="border-b border-border px-4 py-3">
-        <p className="text-sm font-semibold text-foreground">AI Ticket Platform</p>
+        <p className="text-sm font-semibold text-foreground">AI 工单平台</p>
       </div>
       <nav className="flex flex-col gap-1 p-3">
         {navItems.map((item) => (