Every delegation attempt on this action, oldest first, with its transitions.

A retry or a reassignment never rewrites a row: it inserts attempt + 1, so the history of who was asked, who took it and what was judged stays readable. delivered_evidence_ids lists the evidence handed over — the evidence rows themselves are never modified by a delivery, because evidence is history and may already point somewhere else. Sweep transitions (a lapsed lease, a passed deadline) have no performer, so they are recorded on the row (lease_lost_count, last_lease_lost_at, expired_at) rather than attributed to a person or agent that did not act.