Inserts a new tier 3 between DM member lookup and identity-only fallback.
When the current space's member list doesn't contain the voice participant
(user navigated to a different space/instance), the hook now falls back
to the cached User object from ParticipantInfo. This preserves avatar,
avatarColor, displayName, and homeUserId for federated users in PiP.
Broadcast user_updated events over WebSocket when profile fields change,
updating members, DM participants, friends, and cached messages in real time.
Widen useVoiceParticipantMeta to return the full user object and add a
standalone avatarColor prop to Avatar so all ~16 callsites now resolve
the user's chosen gradient color instead of falling back to hash-based colors.
Add flex to speaking ring wrapper divs in VoiceUser and PictureInPicture
to eliminate baseline descender space that made the ring oval. Extract
useVoiceParticipantMeta hook to resolve real display names and avatars
for voice participants instead of showing raw usernames with null avatars.
Jannis Braun