I don’t have a great answer to your questions, but thanks for trying to support us during these dark times.

2nd vote for Espanso, it replaced the outdated AutoKey for me and has been working great ever since.

With the gems’ forms being projections, I’d think that Peridot calculated all that by looking at Amythist’s gem, not her body.

Use Tabby. It is, by far, the closest to a Linux terminal experience. Likely because it’s cross platform. I say this as someone that absolutely despises Windows terminal experiences.

Not sure about the rest of those, but Obsidian isn’t OS either.