infat0x/magby ? reverse-engineered prompt

Build me a privacy first browser tool that can tell the real file type from a file’s magic bytes, not just the extension. I want to be able to upload a file or paste in a Base64 string, then see the detected format, the hex signature, and a clear warning if the file name looks spoofed, like a PDF that is actually an executable. Also show a simple risk label, like low, medium, or high, based on how dangerous the file could be.

Make it feel polished and modern, with a dark cyber style, smooth animations, and a light and dark theme toggle. It should work well on desktop and mobile, and include English, Azerbaijani, and Russian. If the file is a safe image type, show a preview. Keep everything running locally in the browser, no uploads to a server. If you need current browser API details, look them up online first.