smalik314-star/bill-karo — reverse-engineered prompt

Build me a clean and simple TypeScript app called Bill Karo for making bills quickly.

Please inspect the existing project first since there isn’t much documentation, then finish it into a working app. I want a normal user to be able to enter customer details, add bill items with quantity and price, apply discount or tax if needed, and see the total update automatically. There should be a neat bill preview that can be printed or downloaded, and the app should remember recent bills locally so someone can reopen them later.

Keep the design simple, modern, and mobile friendly. Use clear labels, empty states, and basic validation so it feels polished and not like a rough demo. If anything is missing or unclear, make the most reasonable choice and keep it easy to change later. Look up current docs online if you need to.