feat: add HoloLake folder import and official assistant

product-source/hololake-desktop/electron/preload.ts

@@ -11,11 +11,15 @@ import { contextBridge, ipcRenderer } from 'electron';
 contextBridge.exposeInMainWorld('hololake', {
   // 应用信息
   platform: process.platform,
-  version: '0.5.0',
+  version: '0.5.1',
 
   // 数据目录
   getDataPath: () => ipcRenderer.invoke('get-data-path'),
 
+  knowledge: {
+    importFolder: () => ipcRenderer.invoke('knowledge:import-folder'),
+  },
+
   agent: {
     getConfig: () => ipcRenderer.invoke('agent:get-config'),
     saveConfig: (config: { baseUrl: string; model: string; apiKey?: string }) =>