Issue()Nil unless eligible: "auto_close" or "prompt".
Evidence carries the deciding gate.
Nil for the trace-list issues that are the norm.
Legacy: branch of the oldest fix in the board's oldest connected repository.
Issue-level: the problem every fix shares, and the last time a fix run was dispatched for this issue — one run works several fixes.
Newest first.
RecurrencesSinceWatching counts linked traces whose run start_time is after watching_since — i.e. recurrences observed during the current watch period.