It was left out because duration isn't a stored column, just
started_at/ended_at math - now expressed as a SQL case expression so it
can be sorted the same way as the other columns. Still-running rows
sort by elapsed-so-far; never-started (queued) rows sort as NULL, which
puts them out of the way at whichever end matches the current
direction.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>