优化: 大文件拆分+代码分割+按需加载+console清理+any类型替换

- Money.tsx (2260行→54行): 拆分为 money/ 子目录4个组件, React.lazy二级分割
- AIAssistant.tsx (2038行→63行): 拆分为 ai-assistant/ 子目录6个组件, React.lazy二级分割
- xlsx改为动态导入, OvertimeTab从345KB降至12.7KB
- api-services.ts: 请求参数 any→Record<string,unknown>
- 移除前端3处console.log残留
- 后端console替换为pino logger
- 前后端未使用import/变量清理
- Zod schema验证: termination/platform/special-status/work-process
- 新增 leave.routes.ts, acceptance-test.routes.ts
- UI组件: PageGuide, QueryError, Stepper

frontend/src/pages/roster/ContractInfo.tsx

@@ -1,16 +1,16 @@
 import { useState, useRef } from "react"
 import { toast } from "sonner"
-import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query"
+import { useMutation, useQueryClient } from "@tanstack/react-query"
 import { employeeApi } from '../../lib/api-services'
+import { useConfirm } from '../../hooks/useConfirm'
 import Card from "../../components/ui/Card"
 import Button from "../../components/ui/Button"
 import { Input, Label, Select } from "../../components/ui/Input"
-import Modal from "../../components/ui/Modal"
-import { Users, FileText, AlertTriangle, Calendar, GraduationCap, TrendingUp, Scale, X, Plus, Paperclip, Trash2, Printer, Calculator, Shield, Info, Check, Eye, Download, UserX, UserPlus, Briefcase, FileSignature, DollarSign, Building2, RotateCcw, History } from "lucide-react"
-import { fmt } from "./shared"
+import { FileText, AlertTriangle, X, Paperclip, Trash2, Info, Download } from "lucide-react"
 
 export default function ContractInfo({ employeeId, contracts, hireDate }: { employeeId: string; contracts: any[]; hireDate: string }) {
   const queryClient = useQueryClient()
+  const confirm = useConfirm()
   const [showForm, setShowForm] = useState(false)
   const [form, setForm] = useState({ contractType: 'FIXED', signDate: '', startDate: '', endDate: '', contractYears: 3, probationMonths: 0, probationSalary: 0, signMethod: 'PAPER' as 'PAPER' | 'ELECTRONIC', attachmentUrl: '', attachments: [] as { name: string; url: string }[], electronicContractNo: '', electronicContractUrl: '' })
   const contractFileRef = useRef<HTMLInputElement>(null)
@@ -281,7 +281,7 @@ export default function ContractInfo({ employeeId, contracts, hireDate }: { empl
               )}
             </div>
             <button
-              onClick={() => { if (confirm('确定删除此合同记录？')) deleteContractMutation.mutate(c.id) }}
+              onClick={async () => { if (await confirm({ title: '删除合同', message: '确定删除此合同记录？' })) deleteContractMutation.mutate(c.id) }}
               className="text-gray-400 hover:text-danger shrink-0 ml-2 mt-1"
               title="删除合同"
             >
@@ -308,7 +308,6 @@ export default function ContractInfo({ employeeId, contracts, hireDate }: { empl
         const mime = previewUrl.startsWith('data:') ? previewUrl.match(/data:(.*?);/)?.[1] || '' : ''
         const isImage = mime.startsWith('image/')
         const isPdf = mime === 'application/pdf'
-        const previewable = isImage || isPdf
 
         return (
         <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/50" onClick={() => { if (blobUrl !== previewUrl) URL.revokeObjectURL(blobUrl); setPreviewUrl(null) }}>