feat: 新增预算助手报告组件并优化报销交互细节

新增预算助手报告视图模型和组件，优化报销洞察面板和消息项
样式细节，完善预算中心页面布局和文档中心视图，增强报销创
建会话管理和提交编排器，调整 Vite 构建配置，补充单元测试。

web/tests/expense-application-submit-rich-confirm.test.mjs

@@ -13,15 +13,23 @@ const createViewScript = readFileSync(
   fileURLToPath(new URL('../src/views/scripts/TravelReimbursementCreateView.js', import.meta.url)),
   'utf8'
 )
+const messageItemStyles = readFileSync(
+  fileURLToPath(new URL('../src/assets/styles/components/travel-reimbursement-message-item.css', import.meta.url)),
+  'utf8'
+)
 
 test('expense application submit uses rich text link and confirm dialog', () => {
-  const copy = '请核对上述信息无误，确认无误后 [确认](#application-submit) 提交至审批流程。'
+  const copy = '请确认上述的信息是否填写正确？如果准确无误，点击 [确认](#application-submit) 进入审批环节。'
   const rendered = renderMarkdown(copy)
 
+  assert.match(copy, /请确认上述的信息是否填写正确/)
+  assert.match(copy, /进入审批环节/)
   assert.match(
     rendered,
     /<a href="#application-submit" class="markdown-action-link markdown-action-link-confirm">确认<\/a>/
   )
+  assert.match(messageItemStyles, /\.application-preview-footer \{[\s\S]*margin-top: 48px;/)
+  assert.match(messageItemStyles, /\.message-answer-markdown :deep\(\.markdown-action-link\) \{[\s\S]*text-decoration: underline;/)
   assert.match(createViewTemplate, /:open="applicationSubmitConfirmDialog\.open"/)
   assert.match(createViewTemplate, /title="确认提交当前费用申请？"/)
   assert.match(createViewTemplate, /description="提交后申请将进入领导审核流程，请确认关键申请信息和预计费用已经核对无误。"/)