This Ruby app is a simple authentication system that includes user registration, login, and dashboard access. Key features include:

• User Registration: Users can sign up with a unique username, email, and password.
• Login: Users can log in using either their username or email along with a password.
• Password Hashing: Passwords are securely hashed using BCrypt.
• Dashboard Access: Only logged-in users can access the dashboard, with automatic redirection to the login page if not authenticated.
• Logout: Users can securely log out, clearing session data.

This app is designed for secure user management with session control.