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/AppShellRouteView.vue

@@ -1,15 +1,19 @@
 <template>
-  <div class="app">
-    <SidebarRail
-      :nav-items="filteredNavItems"
-      :active-view="activeView"
-      :company-name="companyProfile.name"
-      :company-logo="companyProfile.logo"
-      :current-user="currentUser"
-      @navigate="handleNavigate"
-      @open-chat="openSmartEntry"
-      @logout="handleLogout"
-    />
+  <div class="app" :class="{ 'sidebar-collapsed': sidebarCollapsed }">
+    <div class="app-sidebar">
+      <SidebarRail
+        :nav-items="filteredNavItems"
+        :active-view="activeView"
+        :company-name="companyProfile.name"
+        :company-logo="companyProfile.logo"
+        :current-user="currentUser"
+        :collapsed="sidebarCollapsed"
+        @navigate="handleNavigate"
+        @open-chat="openSmartEntry"
+        @logout="handleLogout"
+        @toggle-collapse="toggleSidebarCollapsed"
+      />
+    </div>
 
     <main
       class="main"
@@ -49,7 +53,7 @@
         @update:active-range="activeRange = $event"
         @update:custom-range="customRange = $event"
         @batch-approve="toast('已批量通过 23 条审批任务。')"
-        @new-application="openExpenseApplicationDialog"
+        @new-application="openExpenseApplicationCreate"
       />
 
       <FilterBar
@@ -91,6 +95,7 @@
         <TravelRequestDetailView
           v-else-if="['requests', 'documents'].includes(activeView) && detailMode && selectedRequest"
           :request="selectedRequest"
+          :back-label="activeView === 'documents' ? '返回单据中心' : '返回报销列表'"
           @back-to-requests="closeRequestDetail"
           @open-assistant="openSmartEntry"
           @request-updated="handleRequestUpdated"
@@ -105,7 +110,7 @@
           :error="requestsError"
           @open-document="openRequestDetail"
           @create-request="openTravelCreate"
-          @create-application="openExpenseApplicationDialog"
+          @create-application="openExpenseApplicationCreate"
           @reload="reloadRequests"
           @summary-change="documentSummary = $event"
         />
@@ -146,12 +151,6 @@
       @close="closeSmartEntry"
       @draft-saved="handleDraftSaved"
     />
-
-    <ExpenseApplicationDialog
-      v-if="expenseApplicationDialogOpen"
-      @close="closeExpenseApplicationDialog"
-      @confirmed="handleExpenseApplicationConfirmed"
-    />
   </div>
 </template>
 
@@ -161,7 +160,6 @@ import { computed, ref } from 'vue'
 import SidebarRail from '../components/layout/SidebarRail.vue'
 import TopBar from '../components/layout/TopBar.vue'
 import FilterBar from '../components/layout/FilterBar.vue'
-import ExpenseApplicationDialog from '../components/shared/ExpenseApplicationDialog.vue'
 import OverviewView from './OverviewView.vue'
 import PersonalWorkbenchView from './PersonalWorkbenchView.vue'
 import TravelReimbursementCreateView from './TravelReimbursementCreateView.vue'
@@ -186,7 +184,11 @@ const knowledgeSummary = ref(null)
 const logsSummary = ref(null)
 const documentSummary = ref(null)
 const auditDetailOpen = ref(false)
-const expenseApplicationDialogOpen = ref(false)
+const sidebarCollapsed = ref(true)
+
+function toggleSidebarCollapsed() {
+  sidebarCollapsed.value = !sidebarCollapsed.value
+}
 
 const {
   activeRange,
@@ -206,6 +208,7 @@ const {
   handleRequestDeleted,
   handleRequestUpdated,
   navItems,
+  openExpenseApplicationCreate,
   openRequestDetail,
   openSmartEntry,
   openTravelCreate,
@@ -229,19 +232,6 @@ const {
 const { companyProfile, currentUser, logout } = useSystemState()
 const filteredNavItems = computed(() => filterNavItemsByAccess(navItems, currentUser.value))
 
-function openExpenseApplicationDialog() {
-  expenseApplicationDialogOpen.value = true
-}
-
-function closeExpenseApplicationDialog() {
-  expenseApplicationDialogOpen.value = false
-}
-
-function handleExpenseApplicationConfirmed() {
-  expenseApplicationDialogOpen.value = false
-  toast('费用申请字段已接入本体识别，后续会按申请审批流落单。')
-}
-
 function handleLogout() {
   logout('manual')
 }