Bengerthelorf/pikpaktui ? reverse-engineered prompt

Build me a terminal app for managing my PikPak cloud storage in Rust.

I want an interactive TUI that feels easy to use, with a clean three column file browser, keyboard navigation, file previews, and a simple settings and help screen. It should let me browse folders, upload and download files, stream videos to my local player, manage share links, and handle magnet links for offline downloads.

Also include a solid command line mode for scripts, with commands for listing, moving, copying, deleting, downloading, uploading, sharing, and updating the app itself. It should support non interactive login, colored output, JSON output when needed, and dry run mode so I can test actions safely.

Please make it work smoothly from the terminal, keep it lightweight, and use current docs online if you need to check any PikPak details.