局部编辑：旋转笔记本电脑并添加 Logo

Using the provided reference image, make a localized edit only: rotate the laptop at the lower left so the back of the screen faces the viewer instead of the keyboard, and add a cute robot mascot logo centered on the back cover. Keep the rest of the illustration unchanged, including the characters, room decor, lighting, watercolor anime style, desk items, and overall composition.