Better Auth Ruby

Better Auth Ruby brings the Better Auth model to Ruby: authentication as a library inside the app, not a hosted account service. The core is Rack-first, so the same engine runs under Rails, Sinatra, Hanami, Grape, and Roda through thin adapters.

It is an independent port that tracks the upstream TypeScript project release by release, with Ruby packages for selected Better Auth plugins. Server-side coverage is already broad. The remaining work is tightening route-level parity, adapter edge cases, and OpenAPI schemas.