Multi-Focus

[itteerde]

I assume we'll have to look into its implications at some point, so here is probably most of what will be needed:

• https://eclipsephase.github.io/en/SUPP/02-CO/04/03-new-mental-ware.html#multi-focus
• https://discord.com/channels/575153209065340929/1082012122050990192/1271801925544972301