feat: AI判赔预测表单UI优化 - 卡片布局/左右分栏/Word导出

- 结构化判赔预测表单改为卡片式布局（员工信息/争议事实/制度合规）
- 左右分栏：左栏表单(2/5)，右栏AI结果(3/5)，结果区固定高度可滚动
- 系统带出字段用Database图标替代文字标注
- 移除违纪记录摘要重复内容
- 三期信息整合到员工信息卡片内
- 新增AI分析结果导出Word文档功能（docx库）
- 后端roster API返回三期字段，修复特殊状态拼接逻辑
- 修复markdown渲染样式冲突（移除index.css中h1/h2/h3覆盖）

backend/src/routes/roster.routes.ts

@@ -23,7 +23,7 @@ function safeDecrypt(encrypted: string): number {
 router.get('/', authMiddleware, async (req: AuthRequest, res, next) => {
   try {
     const page = parseInt(req.query.page as string) || 1
-    const pageSize = Math.min(parseInt(req.query.pageSize as string) || 20, 100)
+    const pageSize = Math.min(parseInt(req.query.pageSize as string) || 20, 999)
     const search = req.query.search as string
     const status = req.query.status as string  // ACTIVE | PRE_HIRE | RESIGNED
     const contractStatus = req.query.contractStatus as string  // active | expiring | expired | unsigned | etc.
@@ -124,6 +124,9 @@ router.get('/', authMiddleware, async (req: AuthRequest, res, next) => {
         gender: e.gender,
         phone: e.phone,
         monthlySalary: safeDecrypt(e.monthlySalary),
+        isPregnant: e.isPregnant,
+        isInMedicalPeriod: e.isInMedicalPeriod,
+        isWorkInjured: e.isWorkInjured,
         latestContract,
         contractStatus: contractInfo.status,
         contractStatusText: contractInfo.statusText,