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/src/utils/reimbursementTextInference.js

@@ -1,4 +1,6 @@
 const DEFAULT_SESSION_TYPE_EXPENSE = 'expense'
+const DEFAULT_SESSION_TYPE_APPLICATION = 'application'
+const DEFAULT_SESSION_TYPE_APPROVAL = 'approval'
 const DEFAULT_SESSION_TYPE_KNOWLEDGE = 'knowledge'
 
 const DEFAULT_INTENT_LABELS = {
@@ -145,7 +147,8 @@ export function inferLocalFlowCandidates(rawText) {
 }
 
 export function shouldRequestExpenseSceneSelection(rawText, options = {}) {
-  if (options.sessionType === DEFAULT_SESSION_TYPE_KNOWLEDGE) {
+  const sessionType = options.sessionType || DEFAULT_SESSION_TYPE_EXPENSE
+  if (sessionType !== DEFAULT_SESSION_TYPE_EXPENSE) {
     return false
   }
   if (Number(options.attachmentCount || 0) > 0) {
@@ -172,7 +175,8 @@ export function shouldRequestExpenseSceneSelection(rawText, options = {}) {
 }
 
 export function shouldRequestExpenseIntentConfirmation(rawText, options = {}) {
-  if (options.sessionType === DEFAULT_SESSION_TYPE_KNOWLEDGE) {
+  const sessionType = options.sessionType || DEFAULT_SESSION_TYPE_EXPENSE
+  if (sessionType !== DEFAULT_SESSION_TYPE_EXPENSE) {
     return false
   }
   if (Number(options.attachmentCount || 0) > 0) {
@@ -203,6 +207,12 @@ export function buildLocalIntentPreview(rawText, sessionType = DEFAULT_SESSION_T
   if (sessionType === DEFAULT_SESSION_TYPE_KNOWLEDGE) {
     return '初步识别为财务知识问答，正在准备检索范围'
   }
+  if (sessionType === DEFAULT_SESSION_TYPE_APPLICATION) {
+    return '初步识别为费用申请事项，准备进入申请信息识别'
+  }
+  if (sessionType === DEFAULT_SESSION_TYPE_APPROVAL) {
+    return '初步识别为审核处理事项，准备进入单据查询或风险核对'
+  }
 
   if (shouldRequestExpenseIntentConfirmation(rawText, { ...options, sessionType })) {
     return '识别到业务事项描述，但是否发起报销尚不明确，需要先由用户确认'