Rooms made on the website (hosted_room, migration 0005), the REST routes in
docs/hosted-rooms.md, and the realtime room.* protocol: joining with the
capacity, adult and linked-account rules, seats, numbered messages with
forged senders dropped and a rate limit, closing. The Rooms page lists them,
with a form to make one and the owner's edit and close.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
