Ariqu/shop — reverse-engineered prompt

Build me a simple online shop in PHP and JavaScript using the existing project as the starting point. I want customers to be able to browse products, search for items, open product or article pages, register, log in, manage their account, add items to a cart, see promotions, and go through a basic checkout or payment page.

Please also make an administration area where the shop owner can add, edit, and remove products, manage visible content, and keep the site usable without touching code. Connect everything to a database, include the needed tables, and make sure login, cart, comments, and search actually work together.

Keep the design clean and easy to use, with a normal storefront homepage, product images, clear buttons, and mobile friendly styling. If something is unfinished in the current files, complete it in the simplest practical way. Look up current docs online if you need to.