feat: 增强风险规则生成引擎与预算中心页面

后端拆分风险规则生成为解释器、语义分析、本体对齐等子模块，
优化模板执行和流程图生成，完善员工种子数据和导入逻辑，增强
报销单权限策略和草稿持久化，前端新增预算中心视图和趋势图
组件，重构审计页面和风险规则测试对话框交互，完善文档中心
和报销创建页面细节，补充单元测试覆盖。

web/tests/requestProgressSteps.test.mjs

@@ -6,7 +6,7 @@ import { mapExpenseClaimToRequest } from '../src/composables/useRequests.js'
 test('application claims are mapped as application documents', () => {
   const request = mapExpenseClaimToRequest({
     id: 'claim-application-1',
-    claim_no: 'APP-20260525-ABC123',
+    claim_no: 'AP-20260525103045-ABCDEFGH',
     employee_name: '张三',
     department_name: '交付部',
     expense_type: 'travel_application',
@@ -42,7 +42,7 @@ test('application claims are mapped as application documents', () => {
 test('approved application claims complete after direct manager approval only', () => {
   const request = mapExpenseClaimToRequest({
     id: 'claim-application-approved',
-    claim_no: 'APP-20260525-DONE01',
+    claim_no: 'AP-20260525113045-HGFEDCBA',
     employee_name: '张三',
     department_name: '交付部',
     manager_name: '李经理',