BruebachL be38e8d429 [Protocol] Add room chat channel extensions and catalog payload (#7475) ... * [Protocol] Add room chat channel extensions and catalog payload * [Protocol] Add per-channel write level and banner to room channel catalog Adds two optional fields to ServerInfo_RoomChannel: - write_access_level: minimum privilege level required to send to the channel. When unset, writing requires the same level as reading (access_level), preserving the previous single-level behavior. This allows read-mostly channels such as a developer news feed: readable by everyone, writable only by developers. - banner_message: static notice shown at the top of the channel, analogous to the room join message on Main. Empty means none. --------- Co-authored-by: Lukas Brübach <Bruebach.Lukas@bdosecurity.de>		2026-10-16 22:46:37 +02:00
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protocol	[Protocol] Add room chat channel extensions and catalog payload (#7475)	2026-10-16 22:46:37 +02:00