pub fn normalize_queue_control(fm: &mut Frontmatter)Expand description
Fold the canonical queue: control onto the deprecated queue_active
boolean (#queue-state-unify). An explicit, recognized queue: value wins
over any stale queue_active: already present, so the canonical key is the
single source of truth. Unrecognized/empty queue: values leave
queue_active untouched. Callers run this immediately after deserializing
frontmatter so every downstream reader of queue_active honors queue:.