Explore: join buttons have no unique accessible name
As part of the NGI project, I did a quick walkthrough to assess the accessibility of Fractal Next.
When exploring rooms to join, all rooms have a button called "Join". For screen reader users, it is unclear which room they are joining without inspecting the context of this button. It would be better to add the room name to every button's accessible name.
Also, every button has a tab stop. A list that can be navigated by the up/down arrow keys might be a better experience.