Generalises the flyout from peer-only to a thread abstraction
({kind: 'peer'|'room', key, label}). Conversations list and peer
strip render rooms with a group icon alongside 1:1 peers; clicking
either opens the same thread view.
New UI surface:
- Pick view gets a 1:1 / group mode switch. Group mode reveals a
name field + multi-select member list and a Create button.
- Room threads show an info icon in the flyout header that opens a
member list; owners can add/remove members, rename-later, or
delete the room; non-owners can leave.
- 1:1 threads show a disposable toggle (ph-fire) in the header;
flipping it tells the relay to drop future sends after delivery
instead of persisting.
- Group bubbles show the author's username above each message when
it changes, matching common chat UX.
Thread open triggers a backfill fetch so cold caches / second
devices catch up on older history from the relay.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
thandClaude Opus 4.6
9267c7c6a1