User Registration & Login

User authentication is how we verify who a user is. It's a critical part of almost any application that handles personal data or restricted features.

• Why it matters: Protects user accounts and sensitive information.
• What we'll cover: Building registration and login flows from scratch.

Registering a new user involves several steps to create a new account:

1. User provides credentials (e.g., username, password, email).
2. Input data is validated (e.g., strong password, unique email).
3. The password is hashed for security.
4. New user data (including the hashed password) is saved to the database.