Both buttons make the row leave the Open tab, so on a quiet system
they look identical. The behavioural difference only manifests next
time the underlying condition fires:
- Acknowledge silences fan-out while the problem persists; the
alert parks on the Acknowledged tab and recurrences just touch
last_seen_at without re-notifying.
- Resolve closes the alert. If the same condition fires again
later, a fresh alert with a new id raises and the channels
fan out as if it were the first time.
Add a one-line legend under the page header explaining both, and
title= tooltips on each button covering the same ground for keyboard
and assistive tech.
steve