Auth Starter (Larkgate) is a complete authentication front end: sign in, sign up, forgot and reset password, email verification, a six-digit two-step screen and a route-guarded account page. A mock auth service in js/auth.js (localStorage) makes every flow work today; replace that one file with your API. Framework-free vanilla JS organised like a React/Next.js app so it ports easily; it does not ship React or Next.js code.

The mock is for demos and is not secure.