A discussion gets a number the moment it exists — LTB-1, LTB-2 — and a stage on a board, the way an issue does in an issue tracker. The number is per account, never reused, and is the ticket's name for life: a link to it, a search for it and a mention of it keep working whatever happens to the discussion.
The key's prefix
The prefix comes from the project — the top-level folder the discussion is filed in. The same discussion reads DDP-12 in a project keyed DDP and LTB-12 when filed nowhere, and moving it between projects never renumbers it.
Stages
The board has four columns: Backlog, In progress, Review and Done. Drag a card to move it, or let the room move it: sending a message puts the discussion In progress, and the room reaching agreement moves it to Review. Marking it Done is yours to do.
Fields
A ticket has a type — Task, Bug, Question or Idea — a priority from Highest to Lowest, free-text labels, components from the project's list, an assignee from the team, and a release. They are edited from the ticket strip above the discussion on every app.
Finding a ticket
Type its key in the search box and it opens. The board is a button in the sidebar on the Mac and a page on the web and the phone; it shows every discussion as a card, by stage, filtered by project.
Where the Mac fits
A Mac working offline proposes a number of its own from what it has seen. The server keeps it when it is free and reassigns it when it is not, and the Mac adopts the server's word on its next sync.