feat: 完善文档中心与报销申请交互及侧边栏重构

后端优化编排器报销查询和本体检测精度，增强报销单草稿保
存和附件回填逻辑，前端重构侧边栏组件支持折叠和图标导
航，完善文档中心状态筛选和详情提示，报销创建和审批详情
页优化会话管理和费用明细交互，新增助手应用服务和预设动
作工具函数，补充单元测试覆盖。

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

@@ -0,0 +1,46 @@
+import assert from 'node:assert/strict'
+import { readFileSync } from 'node:fs'
+import test from 'node:test'
+import { fileURLToPath } from 'node:url'
+
+import { renderMarkdown } from '../src/utils/markdown.js'
+
+const createViewTemplate = readFileSync(
+  fileURLToPath(new URL('../src/views/TravelReimbursementCreateView.vue', import.meta.url)),
+  'utf8'
+)
+const createViewScript = readFileSync(
+  fileURLToPath(new URL('../src/views/scripts/TravelReimbursementCreateView.js', 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 rendered = renderMarkdown(copy)
+
+  assert.match(
+    rendered,
+    /<a href="#application-submit" class="markdown-action-link markdown-action-link-confirm">确认<\/a>/
+  )
+  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，并同步纳入预算管理口径/)
+  assert.match(createViewTemplate, /@confirm="confirmApplicationSubmit"/)
+  assert.match(createViewScript, /const APPLICATION_SUBMIT_HREF = '#application-submit'/)
+  assert.match(
+    createViewScript,
+    /href === APPLICATION_SUBMIT_HREF[\s\S]*openApplicationSubmitConfirm\(message\)/
+  )
+  assert.match(
+    createViewScript,
+    /async function confirmApplicationSubmit\(\)[\s\S]*rawText: '确认提交'[\s\S]*systemGenerated: true/
+  )
+  assert.match(
+    createViewScript,
+    /applicationSubmitConfirmDialog\.value = \{[\s\S]*open: false,[\s\S]*message: null[\s\S]*\}[\s\S]*const payload = await submitComposer/
+  )
+  assert.match(
+    createViewScript,
+    /emit\('draft-saved', \{[\s\S]*status: 'submitted'[\s\S]*documentType: 'application'/
+  )
+})