Five hand-rolled formatDuration variants (two of them byte-identical
across the automations pages) collapse into formatClock, formatDurationWords
and formatDurationMs on the date helper, all backed by dayjs.duration.
Migrates the video badge, AI loading timer, media validation params, and
the automation metrics/invocations tables onto them. Output is unchanged
except the loading timer's minutes are no longer zero-padded (5:30, not 05:30).
91b353c569