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/import.routes.ts

@@ -9,6 +9,12 @@ import { extractBirthDateFromIdCard, extractGenderFromIdCard } from '../services
 import { calcBatchEntry } from '../services/payroll.service'
 import { createEvidence } from '../services/evidence.service'
 
+// RFC 5987 编码中文文件名
+function contentDisposition(filename: string): string {
+  const encoded = encodeURIComponent(filename)
+  return `attachment; filename="${encoded}"; filename*=UTF-8''${encoded}`
+}
+
 const router = Router()
 const upload = multer({ storage: multer.memoryStorage(), limits: { fileSize: 10 * 1024 * 1024 } })
 
@@ -101,7 +107,7 @@ router.post('/excel/preview', authMiddleware, requireAdmin, upload.single('file'
       const rows = XLSX.utils.sheet_to_json(empSheet)
       for (let i = 0; i < rows.length; i++) {
         const r = rows[i] as any
-        const row: any = { rowNo: i + 2, name: val(r['姓名']), department: val(r['部门']) || '未分配', hireDate: r['入职日期'], salary: num(r['月工资']), phone: val(r['手机号']), idCard: val(r['身份证号']), status: 'normal', errors: [] as string[], warnings: [] as string[] }
+        const row: any = { rowNo: i + 2, name: val(r['姓名']), department: val(r['部门']) || '未分配', hireDate: r['入职日期'], salary: num(r['月工资']), phone: val(r['手机号']), idCard: val(r['身份证号']), city: val(r['参保城市']) || '北京', status: 'normal', errors: [] as string[], warnings: [] as string[] }
         if (!row.name) { row.status = 'error'; row.errors.push('姓名为空') }
         const hireDate = parseDate(r['入职日期'])
         if (!hireDate) { row.status = 'error'; row.errors.push('入职日期格式错误') }
@@ -206,7 +212,7 @@ router.post('/excel/error-log', authMiddleware, async (req: AuthRequest, res: Re
     XLSX.utils.book_append_sheet(wb, ws, '错误日志')
     const buf = XLSX.write(wb, { type: 'buffer', bookType: 'xlsx' })
     res.setHeader('Content-Type', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')
-    res.setHeader('Content-Disposition', `attachment; filename="import-errors-${Date.now()}.xlsx"`)
+    res.setHeader('Content-Disposition', contentDisposition('导入错误日志.xlsx'))
     res.send(buf)
   } catch (err) {
     next(err)
@@ -262,6 +268,7 @@ router.post('/excel', authMiddleware, requireAdmin, upload.single('file'), async
               socialInsBase: num(r['社保基数']) || num(salary),
               housingFundBase: num(r['公积金基数']) || num(salary),
               specialDeduction: num(r['专项附加扣除']) || 0,
+              city: val(r['参保城市']) || '北京',
               isPregnant: val(r['孕期']) === '是',
               isInMedicalPeriod: val(r['医疗期']) === '是',
               isWorkInjured: val(r['工伤']) === '是',
@@ -443,7 +450,7 @@ router.get('/template', authMiddleware, async (_req: AuthRequest, res: Response)
   const wb = XLSX.utils.book_new()
 
   const empData = [
-    { '姓名': '张三', '部门': '技术部', '性别': '男', '手机号': '13800138000', '身份证号': '110101199001011234', '入职日期': '2023-03-01', '月工资': 10000, '社保基数': 10000, '公积金基数': 10000, '专项附加扣除': 1000, '紧急联系人': '李四', '紧急联系电话': '13900139000', '住址': '北京市朝阳区', '开户行': '工商银行', '银行账号': '6222021234567890', '孕期': '否', '医疗期': '否', '工伤': '否' },
+    { '姓名': '张三', '部门': '技术部', '性别': '男', '手机号': '13800138000', '身份证号': '110101199001011234', '入职日期': '2023-03-01', '月工资': 10000, '社保基数': 10000, '公积金基数': 10000, '专项附加扣除': 1000, '参保城市': '北京', '紧急联系人': '李四', '紧急联系电话': '13900139000', '住址': '北京市朝阳区', '开户行': '工商银行', '银行账号': '6222021234567890', '孕期': '否', '医疗期': '否', '工伤': '否' },
   ]
   XLSX.utils.book_append_sheet(wb, XLSX.utils.json_to_sheet(empData), '员工信息')
 
@@ -469,7 +476,7 @@ router.get('/template', authMiddleware, async (_req: AuthRequest, res: Response)
 
   const buf = XLSX.write(wb, { type: 'buffer', bookType: 'xlsx' })
   res.setHeader('Content-Type', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')
-  res.setHeader('Content-Disposition', 'attachment; filename="import-template.xlsx"')
+  res.setHeader('Content-Disposition', contentDisposition('员工导入模板.xlsx'))
   res.send(buf)
 })
 
@@ -656,7 +663,7 @@ router.get('/monthly-template', authMiddleware, async (_req: AuthRequest, res: R
 
   const buf = XLSX.write(wb, { type: 'buffer', bookType: 'xlsx' })
   res.setHeader('Content-Type', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')
-  res.setHeader('Content-Disposition', 'attachment; filename="monthly-import-template.xlsx"')
+  res.setHeader('Content-Disposition', contentDisposition('月度增减员导入模板.xlsx'))
   res.send(buf)
 })
 
@@ -756,7 +763,7 @@ router.get('/payroll-template', authMiddleware, (_req: AuthRequest, res: Respons
   XLSX.utils.book_append_sheet(wb, XLSX.utils.json_to_sheet(data), '工资表')
   const buf = XLSX.write(wb, { type: 'buffer', bookType: 'xlsx' })
   res.setHeader('Content-Type', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')
-  res.setHeader('Content-Disposition', 'attachment; filename="payroll-import-template.xlsx"')
+  res.setHeader('Content-Disposition', contentDisposition('工资表导入模板.xlsx'))
   res.send(buf)
 })