feat: add enterprise app ui layer

frontend/src/app/layout/AppShell.tsx

@@ -1,7 +1,7 @@
 import type * as React from 'react'
 
-import { Sidebar } from './Sidebar'
-import { Topbar } from './Topbar'
+import { AppSidebar } from '@/components/app/AppSidebar'
+import { AppTopbar } from '@/components/app/AppTopbar'
 
 type AppShellProps = {
   children: React.ReactNode
@@ -10,9 +10,9 @@ type AppShellProps = {
 export function AppShell({ children }: AppShellProps) {
   return (
     <div className="min-h-screen bg-background text-foreground">
-      <Sidebar />
-      <div className="min-h-screen lg:pl-64">
-        <Topbar />
+      <AppSidebar />
+      <div className="min-h-screen lg:pl-72">
+        <AppTopbar />
         {children}
       </div>
     </div>

frontend/src/components/app/AppDataTable.tsx

@@ -0,0 +1,75 @@
+import type * as React from 'react'
+
+import { AppEmptyState } from '@/components/app/AppEmptyState'
+import { Table, TableBody, TableCell, TableHead, TableHeader, TableRow } from '@/components/ui/table'
+import { cn } from '@/lib/utils'
+
+export type AppDataTableColumn<Row> = {
+  key: string
+  header: React.ReactNode
+  cell: (row: Row) => React.ReactNode
+  className?: string
+}
+
+type AppDataTableProps<Row> = {
+  columns: AppDataTableColumn<Row>[]
+  rows: Row[]
+  getRowKey: (row: Row) => React.Key
+  emptyTitle: string
+  emptyDescription?: string
+  toolbar?: React.ReactNode
+  footer?: React.ReactNode
+  onRowClick?: (row: Row) => void
+}
+
+export function AppDataTable<Row>({
+  columns,
+  rows,
+  getRowKey,
+  emptyTitle,
+  emptyDescription,
+  toolbar,
+  footer,
+  onRowClick
+}: AppDataTableProps<Row>) {
+  return (
+    <div className="overflow-hidden rounded-lg border border-border bg-surface">
+      {toolbar ? <div className="border-b border-border p-3">{toolbar}</div> : null}
+      {rows.length === 0 ? (
+        <div className="p-4">
+          <AppEmptyState title={emptyTitle} description={emptyDescription} />
+        </div>
+      ) : (
+        <div className="overflow-x-auto">
+          <Table>
+            <TableHeader>
+              <TableRow>
+                {columns.map((column) => (
+                  <TableHead key={column.key} className={column.className}>
+                    {column.header}
+                  </TableHead>
+                ))}
+              </TableRow>
+            </TableHeader>
+            <TableBody>
+              {rows.map((row) => (
+                <TableRow
+                  key={getRowKey(row)}
+                  className={cn(onRowClick ? 'cursor-pointer' : undefined)}
+                  onClick={() => onRowClick?.(row)}
+                >
+                  {columns.map((column) => (
+                    <TableCell key={column.key} className={column.className}>
+                      {column.cell(row)}
+                    </TableCell>
+                  ))}
+                </TableRow>
+              ))}
+            </TableBody>
+          </Table>
+        </div>
+      )}
+      {footer ? <div className="border-t border-border px-3 py-2">{footer}</div> : null}
+    </div>
+  )
+}

frontend/src/components/app/AppDetailLayout.tsx

@@ -0,0 +1,15 @@
+import type * as React from 'react'
+
+type AppDetailLayoutProps = {
+  children: React.ReactNode
+  side: React.ReactNode
+}
+
+export function AppDetailLayout({ children, side }: AppDetailLayoutProps) {
+  return (
+    <div className="grid gap-4 xl:grid-cols-[minmax(0,1fr)_360px]">
+      <div className="grid min-w-0 gap-4">{children}</div>
+      <aside className="grid content-start gap-4">{side}</aside>
+    </div>
+  )
+}

frontend/src/components/app/AppEmptyState.tsx

@@ -1,13 +1,17 @@
+import type * as React from 'react'
+
 type AppEmptyStateProps = {
   title: string
   description?: string
+  action?: React.ReactNode
 }
 
-export function AppEmptyState({ title, description }: AppEmptyStateProps) {
+export function AppEmptyState({ title, description, action }: AppEmptyStateProps) {
   return (
     <div className="rounded-lg border border-dashed border-border bg-surface px-4 py-8 text-center">
       <p className="text-sm font-medium text-foreground">{title}</p>
       {description ? <p className="mt-1 text-sm text-muted-foreground">{description}</p> : null}
+      {action ? <div className="mt-4 flex justify-center">{action}</div> : null}
     </div>
   )
 }

frontend/src/components/app/AppFilterBar.tsx

@@ -0,0 +1,15 @@
+import type * as React from 'react'
+
+type AppFilterBarProps = {
+  children: React.ReactNode
+  actions?: React.ReactNode
+}
+
+export function AppFilterBar({ children, actions }: AppFilterBarProps) {
+  return (
+    <div className="flex flex-col gap-3 rounded-lg border border-border bg-surface p-3 lg:flex-row lg:items-center lg:justify-between">
+      <div className="grid flex-1 gap-3 md:grid-cols-2 xl:grid-cols-4">{children}</div>
+      {actions ? <div className="flex flex-wrap items-center gap-2">{actions}</div> : null}
+    </div>
+  )
+}

frontend/src/components/app/AppPageHeader.tsx

@@ -3,17 +3,21 @@ import type * as React from 'react'
 type AppPageHeaderProps = {
   title: string
   description?: string
+  meta?: React.ReactNode
   actions?: React.ReactNode
 }
 
-export function AppPageHeader({ title, description, actions }: AppPageHeaderProps) {
+export function AppPageHeader({ title, description, meta, actions }: AppPageHeaderProps) {
   return (
-    <div className="flex items-start justify-between gap-4">
+    <div className="flex flex-col gap-3 md:flex-row md:items-start md:justify-between">
       <div>
+        <div className="flex flex-wrap items-center gap-2">
           <h1 className="text-xl font-semibold tracking-normal text-foreground">{title}</h1>
+          {meta}
+        </div>
         {description ? <p className="mt-1 text-sm text-muted-foreground">{description}</p> : null}
       </div>
-      {actions ? <div className="flex items-center gap-2">{actions}</div> : null}
+      {actions ? <div className="flex flex-wrap items-center gap-2">{actions}</div> : null}
     </div>
   )
 }

frontend/src/components/app/AppSection.tsx

@@ -0,0 +1,25 @@
+import type * as React from 'react'
+
+import { Card, CardContent, CardHeader } from '@/components/ui/card'
+
+type AppSectionProps = {
+  title: string
+  description?: string
+  action?: React.ReactNode
+  children: React.ReactNode
+}
+
+export function AppSection({ title, description, action, children }: AppSectionProps) {
+  return (
+    <Card>
+      <CardHeader className="flex flex-row items-start justify-between gap-3">
+        <div>
+          <h2 className="text-sm font-semibold text-foreground">{title}</h2>
+          {description ? <p className="mt-1 text-sm text-muted-foreground">{description}</p> : null}
+        </div>
+        {action}
+      </CardHeader>
+      <CardContent>{children}</CardContent>
+    </Card>
+  )
+}

frontend/src/components/app/AppSidebar.tsx

@@ -0,0 +1,63 @@
+import { Bot, BriefcaseBusiness, Database, Home, Library, Settings, ShieldCheck, Ticket } from 'lucide-react'
+
+import { cn } from '@/lib/utils'
+
+const navGroups = [
+  {
+    label: '工作台',
+    items: [{ href: '#/', label: '运营总览', icon: Home }]
+  },
+  {
+    label: '业务处理',
+    items: [
+      { href: '#/tickets', label: '工单中心', icon: Ticket },
+      { href: '#/tickets/new', label: '创建工单', icon: BriefcaseBusiness },
+      { href: '#/solutions', label: '解决方案库', icon: Library }
+    ]
+  },
+  {
+    label: '平台能力',
+    items: [
+      { href: '#/knowledge', label: '知识库', icon: Database },
+      { href: '#/agents', label: 'Agent 配置', icon: Bot },
+      { href: '#/system', label: '系统治理', icon: ShieldCheck },
+      { href: '#/design-system', label: '设计系统', icon: Settings }
+    ]
+  }
+]
+
+export function AppSidebar() {
+  return (
+    <aside className="fixed inset-y-0 left-0 z-30 hidden w-72 border-r border-border bg-surface lg:block">
+      <div className="border-b border-border px-5 py-4">
+        <p className="text-sm font-semibold text-foreground">AI 工单平台</p>
+        <p className="mt-1 text-xs text-muted-foreground">企业技术支持工作台</p>
+      </div>
+      <nav className="flex flex-col gap-5 p-4">
+        {navGroups.map((group) => (
+          <div key={group.label} className="grid gap-1.5">
+            <p className="px-2 text-xs font-medium text-muted-foreground">{group.label}</p>
+            <div className="grid gap-1">
+              {group.items.map((item) => {
+                const Icon = item.icon
+                return (
+                  <a
+                    className={cn(
+                      'flex h-9 items-center gap-2 rounded-md px-2.5 text-sm text-muted-foreground transition-colors',
+                      'hover:bg-muted hover:text-foreground'
+                    )}
+                    href={item.href}
+                    key={item.href}
+                  >
+                    <Icon className="size-4" />
+                    <span>{item.label}</span>
+                  </a>
+                )
+              })}
+            </div>
+          </div>
+        ))}
+      </nav>
+    </aside>
+  )
+}

frontend/src/components/app/AppStatusBadge.tsx

@@ -10,6 +10,6 @@ const STATUS_LABELS: Record<string, string> = {
 }
 
 export function AppStatusBadge({ status }: { status: string }) {
-  const variant = status === 'resolved' || status === 'closed' ? 'success' : 'info'
+  const variant = status === 'resolved' || status === 'closed' ? 'success' : status === 'pending_confirm' ? 'warning' : 'info'
   return <Badge variant={variant}>{STATUS_LABELS[status] ?? status}</Badge>
 }

frontend/src/components/app/AppTopbar.tsx

@@ -0,0 +1,28 @@
+import { Bell, ChevronRight, UserRound } from 'lucide-react'
+
+import { Badge } from '@/components/ui/badge'
+import { Button } from '@/components/ui/button'
+import { Separator } from '@/components/ui/separator'
+
+export function AppTopbar() {
+  return (
+    <header className="sticky top-0 z-20 flex h-14 items-center justify-between border-b border-border bg-surface/95 px-6 backdrop-blur">
+      <div className="flex min-w-0 items-center gap-2 text-sm">
+        <span className="font-medium text-foreground">AI 工单平台</span>
+        <ChevronRight className="size-4 text-muted-foreground" />
+        <span className="truncate text-muted-foreground">当前工作区</span>
+      </div>
+      <div className="flex items-center gap-3">
+        <Badge variant="info">本地环境</Badge>
+        <Separator orientation="vertical" className="h-5" />
+        <Button variant="ghost" size="icon" aria-label="通知">
+          <Bell className="size-4" />
+        </Button>
+        <Button variant="ghost" className="gap-2">
+          <UserRound className="size-4" />
+          <span>系统管理员</span>
+        </Button>
+      </div>
+    </header>
+  )
+}