Chat — conversations in the workspace

Every conversation in Profusia is a channel. Some point at a subject — a document's comment thread, a space's discussion, a card's comments — and some are free-standing rooms your team opens by name. Members can talk in any of them; channels are listed in the Plans rail under "conversations", and documents and spaces carry their own threads behind a small toggle. @mentions resolve to members when you write them. Nothing is delivered anywhere — no emails, no push notifications. Unread marks inside Profusia are the whole mechanism, which is deliberate.