I spent a week building Album Art Creator , a tool that turns a song title into a release-ready cover: a picture from an image model, a title and artist name as live text layers, and a pre-flight check against what Spotify, Apple Music and the three big distributors publish. The whole thing runs on Cloudflare Workers — TanStack Start for the app, D1 for the database, R2 for the images, a payment provider for money, and four different image models behind it. Most of it went the way the docs s...