Built entirely on Zo. One workspace holds the app, the 509 markdown PRPs, the Remotion-rendered trailer, the hosting config, and the custom domain binding. PRPs are plain .md files the server reads at request time — edit one, it's live on the next request. No CMS, no database, no Vercel, no deploy pipeline. zosite.json, a service, done. The 500-card corpus was generated, critiqued, and pruned using parallel Zo child-invocations — the same workspace that serves the app is the one that wrote its contents.