The salvaged #131075 fix makes filtered `hermes sessions export` include pinned rows (archived were already included), so a backup taken before `prune --include-pinned` holds every row prune can delete. Surface that in the export --older-than help so users do not assume prune's keep rules also narrow the backup. Co-authored-by: Alisson Galindo <alissongalindo@users.noreply.github.com> Co-authored-by: Yuan Li <dskwelmcy@163.com>