August 6, 2026 UniWorld-Design: From Pixel Generation to Layer-Native Design 基于语义 RGBA 图层的原生视觉设计框架：T2RGBA 文本生成 RGBA 资产 + I2L 指令驱动的图像分层解构 image-generation image-editing layer-decomposition RGBA multimodal-generation agentic-editing flow-matching