insanekrishnna/paperlab ? reverse-engineered prompt

Build me a polished web app called Paperlab for working with PDFs right in the browser.

It should feel premium and simple, with a clean interface where someone can drop in a PDF and use useful tools on it without uploading anything to a server. Everything should happen locally on the user’s device, with no watermark and no sign up. I want the app to be fast, modern, and easy to use, with clear buttons, drag and drop file handling, and a smooth experience on desktop.

Use current best practices for a Next.js app and make it ready to run locally and deploy cleanly. If you need to check the latest docs for anything, look them up online. Make sure the code is organized, works well in the browser, and keeps all PDF processing client side.