Rebind message store to mode-aware guildId/channelId before send, edit, delete, and history; leave guild mesh without using stale guild binds; gate attachment and message gossip by mode so DMs never hit the public guild.
Rebind message store to mode-aware guildId/channelId before send, edit, delete, and history; leave guild mesh without using stale guild binds; gate attachment and message gossip by mode so DMs never hit the public guild.