Test was passing for wrong reason: both default order (-date) and -duration sort
put Beta first because Beta had longer duration AND later date. Make order diverge
by swapping durations, so -duration must override date-based ordering to pass. Also
fix test to extract tbody to avoid matching "Beta" in header's last-session button.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
lukas
