xrr2016/extensions ? reverse-engineered prompt

Build me a browser extension called Prelook that lets me hover over a link and see the target page in a small preview window right there, without clicking away from the page I’m on. It should work in Chrome, Edge, and Firefox, and feel fast and lightweight. If a site can’t be shown in a frame, it should automatically fall back to a readable article view instead. I want the preview to close naturally when I move away, and I’d like a settings panel where I can change how it opens, how it closes, the size and position of the preview, the theme colors, and a few comfort options like reduced motion. Also make a simple public landing page for the product with clear marketing copy, privacy info, and download links. Keep everything local and privacy friendly, with no login, no backend, and no paid tier. If you need to check current extension docs while building it, go ahead and look them up online.