feat: 统一后端分页查询与前端服务层适配

后端新增通用分页模块，为报销单、员工、预算、agent 资产等
端点统一接入分页参数和游标查询，优化 repository 层分页实
现，前端服务层适配分页响应结构，完善预算图表和全局样式，
优化侧边栏和企业选择器组件，引入 Element Plus 插件注册。

web/src/components/business/ExpenseProfileDetailModal.vue

@@ -135,7 +135,9 @@
 
 <script setup>
 import { computed, nextTick, ref, watch } from 'vue'
-import { ElButton, ElDialog, ElTag } from 'element-plus'
+import { ElButton } from 'element-plus/es/components/button/index.mjs'
+import { ElDialog } from 'element-plus/es/components/dialog/index.mjs'
+import { ElTag } from 'element-plus/es/components/tag/index.mjs'
 
 import ExpenseProfileTagPager from './ExpenseProfileTagPager.vue'
 import RadarChart from '../charts/RadarChart.vue'