gokulsanjayreddy/crop-recommendation-system ? reverse-engineered prompt

Build me a simple crop recommendation web app for farmers that takes soil type, state, district, previous crop, and whether the last season was a profit or loss, then shows the best 3 crops to plant next season.

I want it to feel like a real working prototype, with synthetic data for now, not real government data. The app should generate the sample data, train the models, and then let me submit a form and get back a ranked list with expected yield, market price, cost, net profit per acre, and a short plain English reason for each suggestion.

Please make it run locally in the browser with a backend API and a clean single page interface. It should also keep a simple farmer history, show basic API docs, and be easy to retrain if I regenerate the data. If anything is unclear, use the README and look up current docs online if needed.