Agent Skills: authentication-oauth

Expert guidance on authentication implementation including OAuth 2.0/OIDC, JWT tokens, session management, and secure password handling. Covers both implementing auth from scratch and integrating auth providers. Use when "implement authentication, oauth login, jwt tokens, session management, social login, password reset, multi-factor auth, refresh tokens, Working with Auth0, Clerk, NextAuth, Passport.js, authentication, oauth, jwt, session, security, login, password, mfa, oidc" mentioned.