Niannian AI 画布：Build, evaluate, integrate, and quality-check an AI media infinite canvas for Niannian AI. Use when the task involves node-based image or video generation, storyboard canvases, RunningHub/TapNow/ComfyUI-like workflows, Mayi Canvas, Daxiong Canvas, media nodes, provider execution, canvas persistence, or visual workflow integration into ai.cauai.fun.
