feat: 工作日历/考勤管理重构/AI人力报告/工作台员工分布/筛选优化/导入导出增强

- 新增工作日历页面（月历视图、事件管理、自定义事件）
- 考勤管理重构为6 Tab模块（班次/排班/每日出勤/月度报表/休假记录）
- AI顾问新增人力报告Tab，支持流式生成+Word导出
- 工作台总览新增员工分布统计（性别/年龄/学历/司龄饼图）+部门成本拆分
- 花名册/合同/解聘补偿新增部门和状态筛选
- 薪税管理新增工资表导入模板下载、银行代发CSV导出
- 社保公积金支持多公积金账户类型显示
- 数据导出新增花名册/解聘记录导出，中文文件名编码修复
- 数据导入新增模板下载（员工/增减员/工资表）+错误日志导出
- 移除工作台日历卡片（已迁移至独立工作日历页面）
- 新增20260728/20260729更新测试指导文档

backend/src/routes/calendar.routes.ts

@@ -0,0 +1,120 @@
+import { Router, Response, NextFunction } from 'express'
+import prisma from '../lib/prisma'
+import { authMiddleware, AuthRequest } from '../middleware/auth'
+import { z } from 'zod'
+
+const router = Router()
+
+const createEventSchema = z.object({
+  title: z.string().min(1).max(100),
+  date: z.string(), // ISO date string
+  endDate: z.string().optional(),
+  type: z.enum(['CUSTOM', 'MEETING', 'TEAM_BUILDING', 'TRAINING', 'INTERVIEW']).default('CUSTOM'),
+  priority: z.enum(['high', 'medium', 'low']).default('medium'),
+  location: z.string().optional(),
+  description: z.string().optional(),
+  employeeId: z.string().optional(),
+})
+
+// 获取当月日历事件（自定义 + 系统自动）
+router.get('/', authMiddleware, async (req: AuthRequest, res: Response, next: NextFunction) => {
+  try {
+    const orgId = req.user!.orgId
+    const month = (req.query.month as string) || new Date().toISOString().slice(0, 7)
+    const typeFilter = req.query.type as string | undefined
+
+    const [year, mon] = month.split('-').map(Number)
+    const monthStart = new Date(year, mon - 1, 1)
+    const monthEnd = new Date(year, mon, 0, 23, 59, 59)
+
+    const where: any = {
+      orgId,
+      date: { gte: monthStart, lte: monthEnd },
+    }
+    if (typeFilter) where.type = typeFilter
+
+    const events = await prisma.calendarEvent.findMany({
+      where,
+      include: { employee: { select: { id: true, name: true } } },
+      orderBy: { date: 'asc' },
+    })
+
+    res.json({ success: true, data: events })
+  } catch (err) {
+    next(err)
+  }
+})
+
+// 获取事件详情
+router.get('/:id', authMiddleware, async (req: AuthRequest, res: Response, next: NextFunction) => {
+  try {
+    const event = await prisma.calendarEvent.findFirst({
+      where: { id: req.params.id, orgId: req.user!.orgId },
+      include: { employee: { select: { id: true, name: true } } },
+    })
+    if (!event) return res.status(404).json({ success: false, message: '事件不存在' })
+    res.json({ success: true, data: event })
+  } catch (err) {
+    next(err)
+  }
+})
+
+// 创建日历事件
+router.post('/', authMiddleware, async (req: AuthRequest, res: Response, next: NextFunction) => {
+  try {
+    const data = createEventSchema.parse(req.body)
+    const event = await prisma.calendarEvent.create({
+      data: {
+        orgId: req.user!.orgId,
+        title: data.title,
+        date: new Date(data.date),
+        endDate: data.endDate ? new Date(data.endDate) : null,
+        type: data.type,
+        priority: data.priority,
+        location: data.location || null,
+        description: data.description || null,
+        employeeId: data.employeeId || null,
+        createdBy: req.user!.id,
+      },
+    })
+    res.json({ success: true, data: event })
+  } catch (err) {
+    next(err)
+  }
+})
+
+// 更新日历事件
+router.patch('/:id', authMiddleware, async (req: AuthRequest, res: Response, next: NextFunction) => {
+  try {
+    const updateSchema = createEventSchema.partial()
+    const data = updateSchema.parse(req.body)
+    const updateData: any = { ...data }
+    if (data.date) updateData.date = new Date(data.date)
+    if (data.endDate) updateData.endDate = new Date(data.endDate)
+    if (data.endDate === undefined) delete updateData.endDate
+
+    const event = await prisma.calendarEvent.updateMany({
+      where: { id: req.params.id, orgId: req.user!.orgId },
+      data: updateData,
+    })
+    if (event.count === 0) return res.status(404).json({ success: false, message: '事件不存在' })
+    res.json({ success: true })
+  } catch (err) {
+    next(err)
+  }
+})
+
+// 删除日历事件
+router.delete('/:id', authMiddleware, async (req: AuthRequest, res: Response, next: NextFunction) => {
+  try {
+    const result = await prisma.calendarEvent.deleteMany({
+      where: { id: req.params.id, orgId: req.user!.orgId },
+    })
+    if (result.count === 0) return res.status(404).json({ success: false, message: '事件不存在' })
+    res.json({ success: true })
+  } catch (err) {
+    next(err)
+  }
+})
+
+export default router