Reddit's homeserver sometimes returns a room in /sync with no
m.heroes and no joined m.room.member state events, leaving us with
no t2 ID to resolve and the chat stuck on 'unknown'. enrichUsernames
now hits /_matrix/client/v3/rooms/{roomId}/joined_members for any
chat whose username is 'unknown' or a bare MXID, stamps the t2 ID,
and lets the existing resolver fill in the real Reddit username.
Also treats a cached 'unknown' username as stale in roomToActiveChat
so subsequent deltas re-attempt the lookup instead of pinning it.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
jjbruntonandClaude Opus 4.7
ad5c63fc50