himanshukpr/Bill-Manager ? reverse-engineered prompt

Build me a simple bill manager for a dairy business that helps track customer bills, deliveries, and daily records in one place.

I want a web app where I can add customers, enter milk or product deliveries, generate bills, and look up past bills easily. It should also make it easy to fix mistakes in old bills, see delivery logs by date, and import existing data from an Excel sheet if possible. If there are any current best practices or library docs I should follow, look them up online.

Make the interface clean and easy to use on a laptop, with a dashboard for recent activity, search for customers, and views for billing history and delivery history. Include a backend and frontend, and keep the app ready for real use in a small business. If there are deployment steps needed, set it up so it can be run locally and deployed without too much trouble.