DL-167
AgentSessionStatus gains agent_account_id, populated at every construction site (board projection, SubscribeEvents push synthesis, Runner-side Status) — a join onto the live hub binding Server-side and new Runner-local account carriage (AgentSpec→handle→liveSession), with the terminal STOPPED status resolving its account before unbindSession; makes the UI reconcile full-fleet within the binding’s live scope and is the prerequisite of the reject-on-live scan
Status: Superseded by DL-253 (Matt, 2026-08-25)