feat: 新增归档中心页面并完善知识库与报销查询能力

新增前端归档中心视图及相关工具函数，扩充知识库文档分类和
提取器支持多种格式，增强编排器报销查询的多维度检索，优
化本体规则和用户代理审核消息，前端完善报销创建和审批详
情交互细节，补充单元测试覆盖。

web/src/views/scripts/knowledgeFolderSelection.js

@@ -8,3 +8,12 @@ export function resolveInitialKnowledgeFolder(folders, currentFolder = '') {
 
   return normalizedFolders[0]?.name || ''
 }
+
+export function resolveKnowledgeFolderIcon(folder, activeFolder = '') {
+  const folderName = String(folder?.name || folder || '').trim()
+  const normalizedActiveFolder = String(activeFolder || '').trim()
+
+  return folderName && folderName === normalizedActiveFolder
+    ? 'mdi mdi-folder-open'
+    : 'mdi mdi-folder'
+}