NYCPlanning/equity-tool ? reverse-engineered prompt

Build me a Next.js web app called Equity Explorer for NYC planning data.

It should let people explore equity and development information in a clean, friendly dashboard style, with search, filters, and clear visual summaries of the data. Make it feel polished and easy for a non expert to use, with responsive pages that work well on desktop and mobile. Use the existing data flow from the equity tool ETL, and wire the app so it can load environment based credentials locally.

I want the project set up so I can run it, test it, and lint it easily, with a solid TypeScript codebase and a modern component driven UI. Please include sensible loading states, error handling, and a simple but attractive layout. If you need to look up any current docs or best practices for the stack, go ahead and do that.