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/reimbursementTextInference.test.mjs

@@ -79,6 +79,15 @@ test('business activity without expense intent asks for reimbursement confirmati
   assert.equal(shouldRequestExpenseSceneSelection(businessMessage), false)
 })
 
+test('non-reimbursement assistant sessions do not trigger reimbursement scene selection', () => {
+  const ambiguousMessage = '业务发生时间:2026-02-20 至 2026-02-23，去上海支持上海电力部署项目，申请报销'
+
+  assert.equal(shouldRequestExpenseSceneSelection(ambiguousMessage, { sessionType: 'application' }), false)
+  assert.equal(shouldRequestExpenseIntentConfirmation('去上海电力支撑项目部署', { sessionType: 'approval' }), false)
+  assert.match(buildLocalIntentPreview(ambiguousMessage, 'application'), /费用申请事项/)
+  assert.match(buildLocalIntentPreview('查一下待我审核的单据', 'approval'), /审核处理事项/)
+})
+
 test('explicit technical operation does not ask for reimbursement confirmation', () => {
   const operationMessage = '去上海电力支撑项目部署，帮我整理服务器部署步骤'