showayebDev/ThunderDownloadManager ? reverse-engineered prompt

Build me a modern desktop download manager called Thunder Download Manager that feels fast and polished.

I want a clean app where I can paste links, add a bunch of downloads at once, pause and resume them, see progress clearly, and organize them into queues. It should download big files quickly by splitting them into multiple parts, and it should also handle video and stream downloads like m3u8 files. Please include browser integration so it can grab downloads from Chrome and Firefox, including cookies for private or logged in sites.

Make the interface look great with a few theme choices, dark mode, a system tray experience, and basic settings for speed limits, proxy use, and file integrity checks. It should work on Windows, macOS, and Linux, and keep its data locally. If you need to look up current docs online while building, go ahead.