feat: enable MSC4108/MSC4388 - QR sign-in now advertised
org.matrix.msc4108 = True (was False); rendezvous endpoint live (400 not 404). msc4388_mode: authenticated so unauthenticated internet parties cannot open rendezvous sessions. All bots syncing, 0 errors. New containers total ~263MB (mas 39MB, mas-db 40MB, synapse-db 184MB). Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in: