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/sidebar-collapse.test.mjs

@@ -0,0 +1,41 @@
+import assert from 'node:assert/strict'
+import { readFileSync } from 'node:fs'
+import test from 'node:test'
+import { fileURLToPath } from 'node:url'
+
+const appShell = readFileSync(
+  fileURLToPath(new URL('../src/views/AppShellRouteView.vue', import.meta.url)),
+  'utf8'
+)
+
+const sidebar = readFileSync(
+  fileURLToPath(new URL('../src/components/layout/SidebarRail.vue', import.meta.url)),
+  'utf8'
+)
+
+const appStyles = readFileSync(
+  fileURLToPath(new URL('../src/assets/styles/app.css', import.meta.url)),
+  'utf8'
+)
+
+test('sidebar supports smooth animated collapsed layout', () => {
+  assert.match(appShell, /sidebarCollapsed = ref\(true\)/)
+  assert.match(appShell, /:class="\{ 'sidebar-collapsed': sidebarCollapsed \}"/)
+  assert.match(appShell, /:collapsed="sidebarCollapsed"/)
+  assert.match(appShell, /class="app-sidebar"/)
+  assert.match(appShell, /@toggle-collapse="toggleSidebarCollapsed"/)
+  assert.match(appShell, /function toggleSidebarCollapsed\(\)/)
+  assert.match(appShell, /sidebarCollapsed\.value = !sidebarCollapsed\.value/)
+
+  assert.match(sidebar, /collapsed:\s*\{\s*type: Boolean/)
+  assert.match(sidebar, /'toggle-collapse'/)
+  assert.match(sidebar, /rail-collapsed/)
+  assert.match(sidebar, /折叠侧边栏/)
+  assert.match(sidebar, /展开侧边栏/)
+  assert.match(sidebar, /--rail-motion-duration: 320ms/)
+  assert.match(sidebar, /opacity var\(--rail-fade-duration\)/)
+
+  assert.match(appStyles, /--sidebar-collapsed-width: 64px/)
+  assert.match(appStyles, /\.app-sidebar\s*\{[^}]*transition:\s*width var\(--sidebar-motion\)/)
+  assert.match(appStyles, /\.app\.sidebar-collapsed\s+\.app-sidebar\s*\{\s*width:\s*var\(--sidebar-collapsed-width\)/)
+})