Kittens Game.

It goes Yah

This, the mirroring part, also happens in an Arthur C. Clarke short story: https://en.wikipedia.org/wiki/Technical_Error

lub dub

We need jungle, I’m afraid.

jdupes is my go-to solution for file deduplication. It should be able to remove duplicate files. I don’t know how much control it gives you over which duplicate to remove though.

Your playlists are missing all of Noah Caldwell-Gervais’ video’s.

Are you professor Nakayama?

Crystal, played by Betty Gilpin in the movie The Hunt (2020)

You’ll want to look into a category of programs called dotfiles managers. There’s a bunch of them. Most of them are based on some kind of version control system, usually git.

I personally use yadm