VeoScript/leyecoiv-pos-and-inventory — reverse-engineered prompt

Build me a simple Windows canteen point of sale and inventory system in C# using SQL Server for the database. It should work for a small canteen where the cashier can add products, set prices, track stock on hand, sell items, and have the stock automatically go down after each sale.

I want it to feel straightforward, not fancy. The main screen should let a cashier search or pick items, enter quantities, see the total, accept payment, and save the transaction. There should also be screens to manage products, add new stock, update prices, and view past sales. Include a basic daily sales summary and inventory list so the staff can check what was sold and what needs restocking.

Please set up the database script too, with sample items so I can test it right away. Keep the code organized and easy to understand. Look up current docs online if you need to.