Add get_desktop_environment, set_wallpaper

libs/typescript/computer/src/interface/base.ts

@@ -314,6 +314,10 @@ export abstract class BaseComputerInterface {
   abstract getScreenSize(): Promise<ScreenSize>;
   abstract getCursorPosition(): Promise<CursorPosition>;
 
+  // Desktop Actions
+  abstract getDesktopEnvironment(): Promise<string>;
+  abstract setWallpaper(path: string): Promise<void>;
+
   // Clipboard Actions
   abstract copyToClipboard(): Promise<string>;
   abstract setClipboard(text: string): Promise<void>;

libs/typescript/computer/src/interface/macos.ts

@@ -3,8 +3,8 @@
  */
 
 import type { ScreenSize } from '../types';
-import { BaseComputerInterface } from './base';
 import type { AccessibilityNode, CursorPosition, MouseButton } from './base';
+import { BaseComputerInterface } from './base';
 
 export class MacOSComputerInterface extends BaseComputerInterface {
   // Mouse Actions
@@ -212,6 +212,29 @@ export class MacOSComputerInterface extends BaseComputerInterface {
     return response.position as CursorPosition;
   }
 
+  // Desktop Actions
+  /**
+   * Get the current desktop environment string (e.g., 'xfce4', 'gnome', 'kde', 'mac', 'windows').
+   */
+  async getDesktopEnvironment(): Promise<string> {
+    const response = await this.sendCommand('get_desktop_environment');
+    if (!response.success) {
+      throw new Error((response.error as string) || 'Failed to get desktop environment');
+    }
+    return (response.environment as string) || 'unknown';
+  }
+
+  /**
+   * Set the desktop wallpaper image.
+   * @param path Absolute path to the image file on the VM
+   */
+  async setWallpaper(path: string): Promise<void> {
+    const response = await this.sendCommand('set_wallpaper', { path });
+    if (!response.success) {
+      throw new Error((response.error as string) || 'Failed to set wallpaper');
+    }
+  }
+
   // Clipboard Actions
   /**
    * Copy current selection to clipboard and return the content.