feat: Sprint 1 — 设计Token系统 + 新导航5分组 + AppShell/PageHeader/FilterBar/DataTable组件 + 花名册导出扩充19字段 + 社保/公积金不缴纳选项 + 个税申报表导出 + 入离职/绩效统计看板

frontend/src/components/layout/AppShell.tsx

@@ -0,0 +1,54 @@
+/**
+ * 应用外壳组件 — 统一页面布局结构
+ * 包含 PageHeader 区域 + 内容区域，配合 SidebarNav 和 TopNav 使用
+ */
+import { ReactNode } from 'react'
+import clsx from 'clsx'
+
+interface AppShellProps {
+  children: ReactNode
+  className?: string
+}
+
+/**
+ * 应用外壳 — 限制内容最大宽度，统一内边距
+ */
+export function AppShell({ children, className }: AppShellProps) {
+  return (
+    <div className={clsx('w-full max-w-content mx-auto px-4 md:px-6', className)}>
+      {children}
+    </div>
+  )
+}
+
+interface PageHeaderProps {
+  title: string
+  description?: string
+  actions?: ReactNode
+  status?: ReactNode
+  className?: string
+}
+
+/**
+ * 页面头部 — 统一标题、说明、状态和操作按钮区域
+ */
+export function PageHeader({ title, description, actions, status, className }: PageHeaderProps) {
+  return (
+    <div className={clsx('flex flex-col gap-2 sm:flex-row sm:items-center sm:justify-between mb-4', className)}>
+      <div className="min-w-0 flex-1">
+        <div className="flex items-center gap-2">
+          <h1 className="text-xl font-semibold text-ink-900 truncate">{title}</h1>
+          {status}
+        </div>
+        {description && (
+          <p className="text-sm text-ink-600 mt-0.5">{description}</p>
+        )}
+      </div>
+      {actions && (
+        <div className="flex items-center gap-2 shrink-0">
+          {actions}
+        </div>
+      )}
+    </div>
+  )
+}

frontend/src/components/layout/MobileTabBar.tsx

@@ -1,14 +1,13 @@
 import { Link, useLocation } from 'react-router-dom'
-import { Home, Users, Calculator, UserX, Bot, Shield } from 'lucide-react'
+import { Home, Users, Calculator, CalendarCheck, Shield } from 'lucide-react'
 import clsx from 'clsx'
 
 const tabs = [
-  { path: '/', label: '总览', icon: Home },
-  { path: '/roster', label: '员工', icon: Users },
-  { path: '/money', label: '薪税', icon: Calculator },
-  { path: '/social', label: '社保', icon: Shield },
-  { path: '/termination', label: '解聘', icon: UserX },
-  { path: '/ai-assistant', label: 'AI', icon: Bot },
+  { path: '/', label: '首页', icon: Home },
+  { path: '/roster', label: '团队', icon: Users },
+  { path: '/money', label: '薪酬', icon: Calculator },
+  { path: '/attendance', label: '时间', icon: CalendarCheck },
+  { path: '/evidence', label: '合规', icon: Shield },
 ]
 
 export default function MobileTabBar() {

frontend/src/components/layout/SidebarNav.tsx

@@ -30,31 +30,36 @@ interface NavGroup {
 
 const navGroups: NavGroup[] = [
   {
-    title: '工作台',
+    title: '首页',
     items: [
-      { path: '/', label: '总览', icon: LayoutDashboard },
+      { path: '/', label: '工作台', icon: LayoutDashboard },
       { path: '/calendar', label: '工作日历', icon: CalendarDays },
     ],
   },
   {
-    title: '员工管理',
+    title: '团队',
     items: [
       { path: '/roster', label: '花名册', icon: Users },
       { path: '/work-process', label: '用工办理', icon: ClipboardList },
-      { path: '/attendance', label: '考勤确认', icon: CalendarCheck },
-      { path: '/termination', label: '解聘补偿', icon: UserX },
+      { path: '/termination', label: '离职管理', icon: UserX },
       { path: '/special-status', label: '特殊状态', icon: Heart },
     ],
   },
   {
-    title: '薪税社保',
+    title: '薪酬',
     items: [
       { path: '/money', label: '薪税管理', icon: Calculator },
       { path: '/social', label: '社保公积金', icon: Shield },
     ],
   },
   {
-    title: '合规风控',
+    title: '时间',
+    items: [
+      { path: '/attendance', label: '考勤排班', icon: CalendarCheck },
+    ],
+  },
+  {
+    title: '合规',
     items: [
       { path: '/evidence', label: '证据链', icon: FileSearch },
       { path: '/policies', label: '规章制度', icon: FileText },
@@ -64,15 +69,10 @@ const navGroups: NavGroup[] = [
     ],
   },
   {
-    title: 'AI 辅助',
+    title: '更多',
     items: [
       { path: '/ai-assistant', label: 'AI 顾问', icon: Bot },
       { path: '/templates', label: '文本模板', icon: BookMarked },
-    ],
-  },
-  {
-    title: '系统',
-    items: [
       { path: '/notifications', label: '通知管理', icon: Bell },
       { path: '/audit', label: '操作日志', icon: ScrollText },
       { path: '/settings', label: '设置', icon: Settings },
@@ -85,7 +85,14 @@ const navGroups: NavGroup[] = [
  */
 export default function SidebarNav({ mobileOpen, onClose }: { mobileOpen: boolean; onClose: () => void }) {
   const location = useLocation()
-  const [expandedGroups, setExpandedGroups] = useState<Set<string>>(new Set(navGroups.map(g => g.title)))
+  const isActive = (path: string) => {
+    if (path === '/') return location.pathname === '/'
+    return location.pathname.startsWith(path)
+  }
+  const activeGroup = navGroups.find(g => g.items.some(item => isActive(item.path)))
+  const [expandedGroups, setExpandedGroups] = useState<Set<string>>(
+    new Set(activeGroup ? [activeGroup.title] : ['首页'])
+  )
 
   const toggleGroup = (title: string) => {
     setExpandedGroups(prev => {
@@ -96,11 +103,6 @@ export default function SidebarNav({ mobileOpen, onClose }: { mobileOpen: boolea
     })
   }
 
-  const isActive = (path: string) => {
-    if (path === '/') return location.pathname === '/'
-    return location.pathname.startsWith(path)
-  }
-
   return (
     <>
       {/* 移动端遮罩 */}

frontend/src/components/ui/DataTable.tsx

@@ -0,0 +1,127 @@
+/**
+ * 数据表格组件 — 统一表头、行样式、排序状态和空状态
+ * 支持列定义、行点击、选中行、固定列、对齐和空状态
+ */
+import { ReactNode } from 'react'
+import clsx from 'clsx'
+import { ChevronUp, ChevronDown, ChevronsUpDown } from 'lucide-react'
+
+export interface Column<T> {
+  key: string
+  header: string
+  render?: (row: T) => ReactNode
+  sortable?: boolean
+  align?: 'left' | 'center' | 'right'
+  width?: string
+  fixed?: 'left' | 'right'
+}
+
+interface DataTableProps<T> {
+  columns: Column<T>[]
+  data: T[]
+  rowKey: (row: T) => string
+  onRowClick?: (row: T) => void
+  sortBy?: string
+  sortOrder?: 'asc' | 'desc'
+  onSort?: (key: string) => void
+  emptyState?: ReactNode
+  dense?: boolean
+  className?: string
+}
+
+/**
+ * 数据表格 — 支持排序、行点击、空状态和密度切换
+ */
+export function DataTable<T>({
+  columns,
+  data,
+  rowKey,
+  onRowClick,
+  sortBy,
+  sortOrder,
+  onSort,
+  emptyState,
+  dense,
+  className,
+}: DataTableProps<T>) {
+  const alignClass = (align?: string) =>
+    align === 'right' ? 'text-right' : align === 'center' ? 'text-center' : 'text-left'
+
+  return (
+    <div className={clsx('overflow-x-auto border border-border-default rounded-card bg-surface-card', className)}>
+      <table className="w-full text-sm">
+        <thead>
+          <tr className="border-b border-border-default bg-surface-muted">
+            {columns.map((col) => (
+              <th
+                key={col.key}
+                className={clsx(
+                  'px-3 font-medium text-ink-600 whitespace-nowrap select-none',
+                  dense ? 'py-1.5' : 'py-2.5',
+                  alignClass(col.align),
+                  col.fixed === 'left' && 'sticky left-0 z-10 bg-surface-muted',
+                  col.fixed === 'right' && 'sticky right-0 z-10 bg-surface-muted',
+                  onSort && col.sortable && 'cursor-pointer hover:text-ink-900',
+                )}
+                style={col.width ? { width: col.width } : undefined}
+                onClick={col.sortable && onSort ? () => onSort(col.key) : undefined}
+              >
+                <span className="inline-flex items-center gap-1">
+                  {col.header}
+                  {col.sortable && onSort && (
+                    <span className="inline-flex">
+                      {sortBy === col.key ? (
+                        sortOrder === 'asc' ? (
+                          <ChevronUp className="w-3.5 h-3.5" />
+                        ) : (
+                          <ChevronDown className="w-3.5 h-3.5" />
+                        )
+                      ) : (
+                        <ChevronsUpDown className="w-3.5 h-3.5 text-ink-400" />
+                      )}
+                    </span>
+                  )}
+                </span>
+              </th>
+            ))}
+          </tr>
+        </thead>
+        <tbody>
+          {data.length === 0 ? (
+            <tr>
+              <td colSpan={columns.length} className="text-center py-12 text-ink-400">
+                {emptyState || '暂无数据'}
+              </td>
+            </tr>
+          ) : (
+            data.map((row) => (
+              <tr
+                key={rowKey(row)}
+                onClick={onRowClick ? () => onRowClick(row) : undefined}
+                className={clsx(
+                  'border-b border-border-subtle transition-colors',
+                  onRowClick && 'cursor-pointer hover:bg-surface-muted',
+                )}
+              >
+                {columns.map((col) => (
+                  <td
+                    key={col.key}
+                    className={clsx(
+                      'px-3 text-ink-900 whitespace-nowrap',
+                      dense ? 'py-1.5' : 'py-2.5',
+                      alignClass(col.align),
+                      col.fixed === 'left' && 'sticky left-0 z-10 bg-surface-card',
+                      col.fixed === 'right' && 'sticky right-0 z-10 bg-surface-card',
+                    )}
+                  >
+                    {col.render ? col.render(row) : (row as any)[col.key]}
+                  </td>
+                ))}
+              </tr>
+            ))
+          )}
+        </tbody>
+      </table>
+    </div>
+  )
+}

frontend/src/components/ui/FilterBar.tsx

@@ -0,0 +1,73 @@
+/**
+ * 筛选栏组件 — 统一搜索、筛选条件展示和工具按钮
+ * 支持搜索框、可移除的筛选条件标签、右侧工具区
+ */
+import { ReactNode } from 'react'
+import clsx from 'clsx'
+import { Search, X } from 'lucide-react'
+
+interface FilterBarProps {
+  searchValue?: string
+  searchPlaceholder?: string
+  onSearchChange?: (value: string) => void
+  filters?: ReactNode
+  activeChips?: Array<{ label: string; onRemove: () => void }>
+  tools?: ReactNode
+  className?: string
+}
+
+/**
+ * 筛选栏 — 搜索 + 筛选条件 + 工具按钮
+ */
+export function FilterBar({
+  searchValue,
+  searchPlaceholder = '搜索…',
+  onSearchChange,
+  filters,
+  activeChips,
+  tools,
+  className,
+}: FilterBarProps) {
+  return (
+    <div className={clsx('flex flex-col gap-2 mb-3', className)}>
+      {/* 第一行：搜索 + 筛选器 + 工具 */}
+      <div className="flex flex-wrap items-center gap-2">
+        {onSearchChange !== undefined && (
+          <div className="relative flex-1 min-w-[180px] max-w-xs">
+            <Search className="absolute left-2.5 top-1/2 -translate-y-1/2 w-4 h-4 text-ink-400" />
+            <input
+              type="text"
+              value={searchValue || ''}
+              onChange={(e) => onSearchChange(e.target.value)}
+              placeholder={searchPlaceholder}
+              className="w-full pl-8 pr-3 py-1.5 rounded-md border border-border-default bg-surface-card text-sm text-ink-900 focus:outline-none focus:ring-2 focus:ring-brand-600/30 focus:border-brand-600 transition-colors"
+            />
+          </div>
+        )}
+        {filters && <div className="flex items-center gap-2 flex-wrap">{filters}</div>}
+        {tools && <div className="flex items-center gap-2 ml-auto shrink-0">{tools}</div>}
+      </div>
+
+      {/* 第二行：激活的筛选条件标签 */}
+      {activeChips && activeChips.length > 0 && (
+        <div className="flex items-center gap-1.5 flex-wrap">
+          {activeChips.map((chip, i) => (
+            <span
+              key={i}
+              className="inline-flex items-center gap-1 px-2 py-0.5 rounded text-xs bg-surface-muted text-ink-600"
+            >
+              {chip.label}
+              <button
+                onClick={chip.onRemove}
+                className="hover:text-danger transition-colors"
+                aria-label="移除筛选条件"
+              >
+                <X className="w-3 h-3" />
+              </button>
+            </span>
+          ))}
+        </div>
+      )}
+    </div>
+  )
+}