yash12birth/cadastre_3d_pot ? reverse-engineered prompt

Build me a simple but polished web app for a SIH hackathon that shows cadastre or land parcel data in a clear visual way. I want it to feel like a demo people can open in the browser and understand quickly, with a clean landing page, a main visualization area, and a few basic controls for loading sample data and checking it. If it makes sense, use the local dummy data already in the project and make the page work offline with that data first.

The main goal is to make land records feel easy to inspect, so include a neat map or 3D style view if you can, plus a sidebar or top panel for details about the selected parcel. Keep the design modern and simple, and make sure the app is responsive enough for a presentation. If you need to look up current docs or a lightweight library to help with the visual part, go ahead and do that.