HelpFreedom/youthub — reverse-engineered prompt

Build me a Linux terminal YouTube app that works inside kitty and feels like a real browser free client. I want a thumbnail grid UI with keyboard navigation, search, recommendations, infinite scroll, and little preview slideshows when I pause on a video. When I press Enter it should open a custom ffplay based player in a separate window, play up to 1080p60 when available, let me seek, change speed, mute, adjust volume, and toggle a side panel with recommended videos.

Please include SponsorBlock skipping with visible markers, YouTube login through the activate code flow, and watch history support if I provide exported Firefox cookies. It should also handle YouTube bot protection well enough to actually stream, support optional HTTP or SOCKS proxies, and keep everything browser free at runtime.

Make it runnable on Linux X11 with the needed setup and scripts so I can launch it from the terminal and use it mostly with the keyboard. Look up current docs online if you need to.