Confusion with Dual Authentication in Saleor-Storefront and Issues with Customer Login/Signup

[Ammadshafi]

I am trying to build an application on top of Saleor, using the Saleor-storefront with Next.js. My requirements are straightforward, but I'm finding it challenging to modify the code because there are two different authentication systems. One is in the checkout form, and the other is in the login using the app router with the Saleor Auth SDK. I want to centralize the authentication. If anyone can explain why there are two authentication systems and how I can remove one, that would be helpful. Additionally, if there are any documents or videos explaining how the Saleor storefront works, that would be great.

I also have a question about how customers work in the Saleor-storefront. There doesn't seem to be a signup page, only a login page, and it's not functioning correctly. When I register a new customer in Saleor, it doesn't ask me for a password, so how can I log in?