feat: 全部列表页统一分页 + WorkProcess集成现有服务

- WorkProcess/Termination/Evidence/Contracts/Policies/Templates 添加 Pagination 组件
- 后端 getDrafts/getPolicies/enterprise-template 路由添加分页支持（可选参数，向后兼容）
- work-process.service CONFIRM case 修正：移除不存在的 probationEndDate 字段
- 新增 migration_add_three_tables.sql 增量迁移文件

backend/src/services/termination.service.ts

@@ -738,7 +738,7 @@ export async function cancelTermination(orgId: string, recordId: string, userId:
 }
 
 /** 获取草稿列表 */
-export async function getDrafts(orgId: string, status?: string, search?: string, department?: string) {
+export async function getDrafts(orgId: string, status?: string, search?: string, department?: string, page?: number, pageSize?: number) {
   const where: any = { orgId }
   if (status) {
     where.status = status
@@ -758,13 +758,18 @@ export async function getDrafts(orgId: string, status?: string, search?: string,
     }
   }
 
-  const records = await prisma.terminationRecord.findMany({
-    where,
-    include: { employee: true },
-    orderBy: { updatedAt: 'desc' },
-  })
+  const hasPagination = page && pageSize
+  const [records, total] = await Promise.all([
+    prisma.terminationRecord.findMany({
+      where,
+      include: { employee: true },
+      orderBy: { updatedAt: 'desc' },
+      ...(hasPagination ? { skip: (page! - 1) * pageSize!, take: pageSize! } : {}),
+    }),
+    hasPagination ? prisma.terminationRecord.count({ where }) : Promise.resolve(0),
+  ])
 
-  return records.map((r) => ({
+  const items = records.map((r) => ({
     id: r.id,
     employeeId: r.employeeId,
     employeeName: r.employee.name,
@@ -780,6 +785,11 @@ export async function getDrafts(orgId: string, status?: string, search?: string,
     createdAt: r.createdAt.toISOString().slice(0, 10),
     updatedAt: r.updatedAt.toISOString().slice(0, 10),
   }))
+
+  if (hasPagination) {
+    return { items, total, page, pageSize, totalPages: Math.ceil(total / pageSize!) }
+  }
+  return items
 }
 
 /** 获取单条记录详情（含所有流程字段） */