Reachable from any non-terminal phase via convene escalate — "the only door a human walks through." convene resume returns to the phase it left.
Reachable only from EXECUTE via convene close, and only with a checkpoint reference. Terminal.
initiatives/<slug>/convene.json. Everything a phase actually does (what scouts write, how
judgment reasons, what the brief says) stays agent work over the seven verbs; convene adds no new
judgment, only bookkeeping and refusal of illegal transitions. doctor flags any convening with no
phase transition in 7 days as stale.