anefzaoui/misterdownloadmanager ? reverse-engineered prompt

Build me a desktop download manager called Mister Download Manager that feels simple and familiar, like the one people already know, but faster and free forever.

It should work on Windows, Mac, and Linux, with a clean app window that shows my downloads, progress, categories, and a toolbar for common actions. I want it to handle regular file downloads really well, and also support magnet links and torrent files, including seeding. It should connect to the browser with an extension so downloads can be sent straight into the app from Firefox and Chrome based browsers.

Please make it polished, open source, and usable without sign up or ads. If it helps, look up current docs online for browser extension setup and any platform specific details. I’d also like the app to feel modern, support lots of languages, and include the kind of speed and stability people expect from a premium download manager, but without the paywall.