feat: 分页组件、Dashboard待办图标、归档与工资条解耦、总览数据优化

- 新增公用 Pagination 组件，Roster/Money/Dashboard 列表加分页
- Dashboard 待办按类型显示不同图标（合同/薪资/解聘/月度）
- 待办分为「风险提醒」「月度任务」两个顶层 tab
- 归档与工资条生成解耦：归档只锁定批次，工资条单独生成
- 工资条管理新增「从批次汇总生成」按钮
- Dashboard 总览优先从已归档批次 BatchEntry 汇总数据
- 新增工资条生成待办提醒，生成后自动标记完成
- 修复高风险统计只含 CONTRACT/TERMINATION 类型
- 修复月度任务去重逻辑覆盖 SALARY 类型

frontend/src/pages/Compensation.tsx

@@ -6,6 +6,9 @@ import Card from '../components/ui/Card'
 import Button from '../components/ui/Button'
 import { Input, Label, Select } from '../components/ui/Input'
 
+// 金额格式化：保留两位小数 + 千分位
+const fmt = (n: number) => (n || 0).toLocaleString('zh-CN', { minimumFractionDigits: 2, maximumFractionDigits: 2 })
+
 interface EmployeeOption {
   id: string
   name: string
@@ -198,28 +201,28 @@ function SeveranceCalculator() {
                 {result.capped && (
                   <div className="text-sm text-warning">⚠️ 工资超过社平3倍，已按三倍封顶且最多补偿12个月</div>
                 )}
-                <div className="text-sm text-gray-500">计算基数：<span className="text-gray-900">¥{result.wage.toLocaleString()}/月</span></div>
+                <div className="text-sm text-gray-500">计算基数：<span className="text-gray-900">¥{fmt(result.wage)}/月</span></div>
                 <div className="border-t pt-3 space-y-2">
                   <div className="flex items-center justify-between">
                     <span className="font-medium">{result.isIllegal ? '经济补偿金' : '应付金额'}</span>
-                    <span className="font-medium">¥{result.basePay.toLocaleString(undefined, { maximumFractionDigits: 2 })}</span>
+                    <span className="font-medium">¥{fmt(result.basePay)}</span>
                   </div>
                   {result.isIllegal ? (
                     <>
                       <div className="flex items-center justify-between">
                         <span className="font-medium text-danger">违法解除赔偿金（×2）</span>
-                        <span className="text-xl font-bold text-danger">¥{result.totalPay.toLocaleString(undefined, { maximumFractionDigits: 2 })}</span>
+                        <span className="text-xl font-bold text-danger">¥{fmt(result.totalPay)}</span>
                       </div>
-                      <div className="text-xs text-gray-400">（{result.compMonths}个月 × ¥{result.wage.toLocaleString()} × 2）</div>
+                      <div className="text-xs text-gray-400">（{result.compMonths}个月 × ¥{fmt(result.wage)} × 2）</div>
                     </>
                   ) : (
                     <>
                       <div className="flex items-center justify-between">
                         <span className="font-medium">{result.reason}</span>
-                        <span className="text-xl font-bold text-primary">¥{result.totalPay.toLocaleString(undefined, { maximumFractionDigits: 2 })}</span>
+                        <span className="text-xl font-bold text-primary">¥{fmt(result.totalPay)}</span>
                       </div>
-                      <div className="text-xs text-gray-400">（{result.compMonths}个月 × ¥{result.wage.toLocaleString()}）
-                        {result.noticePay > 0 && <span className="block">含代通知金 ¥{result.noticePay.toLocaleString()}</span>}
+                      <div className="text-xs text-gray-400">（{result.compMonths}个月 × ¥{fmt(result.wage)})
+                        {result.noticePay > 0 && <span className="block">含代通知金 ¥{fmt(result.noticePay)}</span>}
                       </div>
                     </>
                   )}
@@ -337,9 +340,9 @@ function DoubleSalaryCalculator() {
             <div className="border-t pt-3">
               <div className="flex items-center justify-between">
                 <span className="font-medium">需赔</span>
-                <span className="text-xl font-bold text-danger">¥{result.totalPay.toLocaleString()}</span>
+                <span className="text-xl font-bold text-danger">¥{fmt(result.totalPay)}</span>
               </div>
-              <div className="text-xs text-gray-400 mt-1">（{result.months}个月 × ¥{monthlyWage.toLocaleString()}）</div>
+              <div className="text-xs text-gray-400 mt-1">（{result.months}个月 × ¥{fmt(monthlyWage)}）</div>
             </div>
             <div className="flex items-start gap-2 px-3 py-2 rounded-md bg-blue-50 text-blue-700 text-sm">
               <Info className="w-4 h-4 mt-0.5 shrink-0" />