mm-gateway: One Provider-Neutral API for Image, Video, and Music Generationtranslating…

Every generative-AI app I worked on hit the same wall. Pick a backend — OpenAI for images, Volcengine for video, Mureka for music — and before long the app is full of that provider's SDK quirks: its field names, its sync-vs-async polling loop, its error shapes. Then if want to…