Lists the agents currently working across ALL the user's machines in the mesh — which machine each is on, its role, repo, capabilities, its `status` (what it is doing RIGHT NOW, with `status_age_s` = how many seconds that text has been unchanged), `last_activity_at` (the last time it called the mesh at all) and `expires_at` (when it drops off this list if it stays silent). Use `status` + `last_activity_at` to tell a working peer from a stuck one before deciding who to interact with. Use it before starting heavy work (a release, a wide refactor, a deploy) to see who else is active and warn them with agent_send, and to get the `handle` you address a message to. `alive` means "called the mesh within its own ttl_seconds" — any call counts, not just agent_checkin — NOT "is reachable now": an agent that stopped (or whose machine turned the mesh off) still reads alive until its entry expires. A message sent in that window is accepted and stored, and simply never read. If a peer does not answer, re-run this before concluding anything — its entry may have expired since.
ConnectorOAuth