Auth system with TanStack Start & better-auth.
TanStack Start enabled a great dev experience for a production-ready auth system with SSR, prefetching, and fast interactions. Tech: TanStack Start, Better Auth, Postgres/Drizzle/Zod, Upstash, React Query/TanStack Form, Docker, TailwindCSS/Shadcn. Features: background email processing via Upstash/Resend, active session management with revoke, secure account deletion (password + email), optimized performance. Next: RBAC, 2FA, org support/payments (Polar.sh).