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/travel-reimbursement-guided-flow.test.mjs

@@ -18,6 +18,7 @@ import {
   GUIDED_ACTION_CONFIRM_REIMBURSEMENT_REVIEW,
   GUIDED_ACTION_CONTINUE_FILLING,
   GUIDED_ACTION_OPEN_TRAVEL_CALCULATOR,
+  GUIDED_ACTION_START_APPLICATION,
   GUIDED_ACTION_PROCESS_INTERRUPTION,
   GUIDED_ACTION_SELECT_EXPENSE_TYPE,
   GUIDED_ACTION_SELECT_QUERY_MODE,
@@ -90,6 +91,16 @@ test('assistant session modes expose independent quick actions', () => {
     buildWelcomeQuickActions(SESSION_TYPE_APPLICATION).map((item) => item.label),
     APPLICATION_WELCOME_QUICK_ACTIONS.map((item) => item.label)
   )
+  assert.equal(buildWelcomeQuickActions(SESSION_TYPE_APPLICATION)[0].action, GUIDED_ACTION_START_APPLICATION)
+  assert.ok(!buildWelcomeQuickActions(SESSION_TYPE_APPLICATION)[0].prompt)
+  assert.ok(
+    buildWelcomeQuickActions(SESSION_TYPE_APPLICATION).every((item) => item.action !== GUIDED_ACTION_OPEN_TRAVEL_CALCULATOR)
+  )
+  assert.ok(
+    buildWelcomeQuickActions(SESSION_TYPE_APPROVAL).every((item) => item.action !== GUIDED_ACTION_OPEN_TRAVEL_CALCULATOR)
+  )
+  assert.match(guidedFlowScript, /GUIDED_ACTION_START_APPLICATION/)
+  assert.match(guidedFlowScript, /buildApplicationTemplatePreview/)
   assert.deepEqual(
     buildWelcomeQuickActions(SESSION_TYPE_APPROVAL).map((item) => item.label),
     APPROVAL_WELCOME_QUICK_ACTIONS.map((item) => item.label)