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

backend/prisma/schema.prisma

@@ -175,6 +175,7 @@ model Organization {
   shifts               Shift[]
   shiftAssignments     ShiftAssignment[]
   leaveRecords         LeaveRecord[]
+  leaveRequests        LeaveRequest[]
   calendarEvents       CalendarEvent[]
   consultations        Consultation[]
   workProcesses        WorkProcess[]
@@ -263,6 +264,7 @@ model Employee {
   specialDeductionRecords SpecialDeductionRecord[]
   shiftAssignments        ShiftAssignment[]
   leaveRecords            LeaveRecord[]
+  leaveRequests           LeaveRequest[]
   calendarEvents          CalendarEvent[]
   workProcesses           WorkProcess[]
   specialStatuses         EmployeeSpecialStatus[]
@@ -1162,6 +1164,33 @@ model LeaveRecord {
   @@index([orgId, startDate])
 }
 
+// ========== 休假审批流 ==========
+
+model LeaveRequest {
+  id           String   @id @default(cuid())
+  orgId        String
+  org          Organization @relation(fields: [orgId], references: [id], onDelete: Cascade)
+  employeeId   String
+  employee     Employee @relation(fields: [employeeId], references: [id], onDelete: Cascade)
+  leaveType    String   // SICK=病假 / PERSONAL=事假 / ANNUAL=年假 / MATERNITY=产假 / OTHER=其他
+  startDate    DateTime
+  endDate      DateTime
+  days         Float    // 请假天数
+  reason       String?
+  attachment   String?  // 附件URL（如病假条）
+  status       String   @default("PENDING") // PENDING=待审批 / APPROVED=已批准 / REJECTED=已驳回 / CANCELLED=已撤回
+  approverId   String?  // 审批人ID
+  approvedAt   DateTime?
+  approveRemark String? // 审批意见
+  createdBy    String
+  createdAt    DateTime @default(now())
+  updatedAt    DateTime @updatedAt
+
+  @@index([orgId, employeeId])
+  @@index([orgId, status])
+  @@index([orgId, startDate])
+}
+
 // ========== 自定义日历事件 ==========
 
 model CalendarEvent {
@@ -1311,3 +1340,27 @@ model EmployeeSpecialStatus {
   @@index([orgId, type])
   @@index([employeeId])
 }
+
+// ========== 验收测试 ==========
+model AcceptanceTest {
+  id              String   @id @default(uuid())
+  orgId           String
+  verifierName    String   // 验收人姓名
+  results         Json     // { "1.1": "pass", "1.2": "fail", ... }
+  remarks         Json     // { "1.1": "备注内容", ... }
+  conclusionName  String?  // 结论验收人
+  conclusionDate  String?  // 结论日期
+  conclusionResult String? // pass | conditional | fail — 系统自动计算
+  conclusionIssues String? // 遗留问题（系统自动汇总）
+  screenshots      Json?     // { "0-0": "data:image/png;base64,...", ... }
+  signature1       String?   // 验收人签名 dataURL
+  signature2       String?   // 项目经理签名 dataURL
+  status          String   @default("DRAFT") // DRAFT | SUBMITTED
+  submittedAt     DateTime?
+  createdBy       String
+  createdAt       DateTime @default(now())
+  updatedAt       DateTime @updatedAt
+
+  @@unique([orgId, verifierName])
+  @@index([orgId, status])
+}