Next.js Authentication Overview Provides authentication implementation patterns for Next.js 15+ App Router using Auth.js 5 (NextAuth.js), covering the complete authentication lifecycle from initial setup to production-ready role-based access control implementations. When to Use - Setting up Auth.js 5 from scratch or adding OAuth providers - Implementing protected routes with Middleware - Handling authentication in Server Components and Server Actions - Implementing role-based access control (RBAC) - Creating credential-based or OAuth sign-in/sign-out flows Instructions 1. Install Dependencies…