Project structure

api/           Next.js API — thin routes, Drizzle ORM, JWT auth
  src/
    components/
    content/     Generated lessons, registry, catalog map
    db/          Drizzle schema and client
    lib/
app/           Expo app — React Native 0.81 / React 19
config/        Four config/*.ts files — the single rebrand surface
content/       Raw course material you drop in, per course
docs/          Reference docs (best practices, content pipeline, project map)

config/ is intentionally small and separate from both api/ and app/: app.config.ts, course.config.ts, design.config.ts, and entitlements.config.ts are the only files you should need to touch to rebrand or reconfigure the product. See Configuration and rebranding.

Generated course content lives under api/src/content/ — lesson modules, a registry.ts of learning units, and a client-side content map. Never hand-edit generated output without also updating the source in content/, or mark the lesson as hand-authored.