improvements

src/preload/index.ts

@@ -22,11 +22,13 @@ const api = {
 
   fs: {
     tree: () => ipcRenderer.invoke('fs:tree'),
+    readDir: (path: string) => ipcRenderer.invoke('fs:readDir', path),
     files: () => ipcRenderer.invoke('fs:files'),
     read: (path: string) => ipcRenderer.invoke('fs:read', path),
     write: (path: string, content: string): Promise<void> => ipcRenderer.invoke('fs:write', path, content),
     delete: (path: string): Promise<void> => ipcRenderer.invoke('fs:delete', path),
     create: (path: string): Promise<void> => ipcRenderer.invoke('fs:create', path),
+    mkdir: (path: string): Promise<void> => ipcRenderer.invoke('fs:mkdir', path),
   },
 
   shell: {