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/views/scripts/useTravelReimbursementSubmitComposer.js

@@ -3,6 +3,7 @@ import {
   buildAttachmentAssociationConfirmationMessage,
   buildUnsavedDraftAttachmentConfirmationMessage
 } from './travelReimbursementAttachmentModel.js'
+import { resolveAssistantScopeGuard } from '../../utils/assistantSessionScope.js'
 
 export function useTravelReimbursementSubmitComposer(ctx) {
   const {
@@ -238,6 +239,7 @@ export function useTravelReimbursementSubmitComposer(ctx) {
     function buildBackendMessage(rawText, fileNames, ocrSummary = '') {
       const parts = []
       const normalizedText = String(rawText || '').trim()
+      const sessionType = String(activeSessionType.value || '').trim()
 
       if (normalizedText) {
         parts.push(normalizedText)
@@ -245,7 +247,11 @@ export function useTravelReimbursementSubmitComposer(ctx) {
         parts.push(
           isKnowledgeSession.value
             ? `我上传了 ${fileNames.length} 份附件，请结合附件名称回答财务相关问题。`
-            : `我上传了 ${fileNames.length} 份票据，请结合附件名称给出报销建议并整理待核对信息。`
+            : sessionType === 'application'
+              ? `我上传了 ${fileNames.length} 份附件，请结合附件名称整理费用申请建议和待核对信息。`
+              : sessionType === 'approval'
+                ? `我上传了 ${fileNames.length} 份附件，请结合附件名称整理审核风险和处理建议。`
+                : `我上传了 ${fileNames.length} 份票据，请结合附件名称给出报销建议并整理待核对信息。`
         )
       }
 
@@ -358,6 +364,30 @@ export function useTravelReimbursementSubmitComposer(ctx) {
               ? `新上传 ${fileNames.length} 份票据，请单独建立报销单。`
               : `我上传了 ${fileNames.length} 份票据，请帮我识别并整理报销建议。`)
 
+      const scopeGuard = resolveAssistantScopeGuard(rawText, activeSessionType.value, {
+        attachmentCount: files.length,
+        hasActiveReviewPayload: Boolean(activeReviewPayload.value),
+        reviewAction
+      })
+      if (scopeGuard && !systemGenerated && !reviewAction && !options.skipScopeGuard) {
+        if (!options.skipUserMessage) {
+          messages.value.push(createMessage('user', userText, fileNames))
+        }
+        messages.value.push(createMessage('assistant', scopeGuard.text, [], {
+          meta: scopeGuard.meta,
+          suggestedActions: scopeGuard.suggestedActions
+        }))
+        composerDraft.value = ''
+        composerBusinessTimeTags.value = []
+        composerBusinessTimeDraftTouched.value = false
+        nextTick(() => {
+          adjustComposerTextareaHeight()
+          scrollToBottom()
+        })
+        persistSessionState()
+        return null
+      }
+
       const hasUnsavedReviewDraft = Boolean(
         !isKnowledgeSession.value &&
         files.length &&
@@ -521,7 +551,11 @@ export function useTravelReimbursementSubmitComposer(ctx) {
         options.pendingText || (
           isKnowledgeSession.value
             ? '正在整理财务知识答案...'
-            : '正在识别并整理右侧核对信息...'
+            : activeSessionType.value === 'application'
+              ? '正在识别并整理申请核对信息...'
+              : activeSessionType.value === 'approval'
+                ? '正在查询审核上下文并整理风险提示...'
+                : '正在识别并整理右侧核对信息...'
         ),
         [],
         {