Elysia.js API with session-based auth (email/password + Google OAuth), role system (USER/ADMIN/SUPER_ADMIN), Prisma + PostgreSQL, React 19 with Mantine UI, TanStack Router, dark theme, and comprehensive test suite (unit, integration, E2E with Lightpanda). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>