调用字节跳动豆包 Seedream 大模型生成图片。This skill should be used when the user wants to generate images from text descriptions, create AI art, produce illustrations, or do image-to-image transformations using the Doubao Seedream model. 触发词:生成图片、文生图、画图、AI画图、豆包生图、生图、生成插画、AI配图。