/api/groups (admin) creates, renames and deletes groups and adds or removes
members. The member directory lists every group, and a share may name a
group_id instead of a user_id; a note's shares answer with `member` or `group`.
A note shared with a group reaches whoever is in it now, so membership is what
the feed follows: joining grants each of the group's notes to the new member's
devices, and leaving (or the group being deleted) revokes them unless a direct
share or another group still reaches that person. recipients() never counts the
note's own owner, who may sit in a group it is shared with.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
bvandeusenandClaude Opus 5.5
5f3cfe8bb7