I’m expanding an existing Laravel-based site and the next piece I need is a fully functional shopping cart. For this phase I am not looking for a complete product catalog or payment gateway; the focus is squarely on a robust cart that customers can use to collect items as they browse. Here is what I expect the finished module to handle: • Add, update quantity, and remove items • Automatic price and subtotal calculations, including tax logic hooks I can adjust later • Session-based persistence for guests and seamless transfer to a user account when someone logs in • Clean Blade components so I can drop the cart widget anywhere in my views • RESTful controllers, models, and migrations following Laravel best-practice naming conventions • Clear installation instructions so I can merge the feature into staging and production without surprises If you leverage packages such as Laravel Cashier or Livewire for a smoother UX, please note that in the code comments and README so the dependencies are clear. Once delivered, I’ll test against my existing products table and verify that cart actions perform in under 150 ms on a modest VPS. If everything passes, we’re done—otherwise we’ll iterate until it does. Looking forward to integrating your solution.