feat: Add an Ollama-based PDF OCR script and refactor frontend folder tree management with a new FoldersManager and useSyncExternalStore.

frontend/src/lib/api/apiClient.ts

@@ -12,7 +12,7 @@ import type {
   TenantSnippet,
   TagResponse,
   CorrespondentResponse,
-  FolderTreeResponseItem,
+  FolderTreeNode,
 } from './apiTypes';
 import type { AxiosError, AxiosInstance, InternalAxiosRequestConfig, AxiosRequestConfig } from 'axios';
 
@@ -79,8 +79,8 @@ export const listDocuments = async (params: Record<string, unknown> = {}): Promi
   return Array.isArray(data) ? data : [];
 };
 
-export const getFolderTree = async (): Promise<FolderTreeResponseItem[]> => {
-  const { data } = await api.get<FolderTreeResponseItem[]>('/folders/tree');
+export const getFolderTree = async (): Promise<FolderTreeNode[]> => {
+  const { data } = await api.get<FolderTreeNode[]>('/folders/tree');
   return Array.isArray(data) ? data : [];
 };