Follow-up to the archive feature: archived healthchecks showed in both the
main All-sites list and the Archived section. allSitesSummary() now excludes
archived sessions from the aggregate (and from the per-site "latest session"
detail), so a site whose sessions are all archived drops off the main list
and appears only under "Archived". A site with a mix keeps its row, counting
only its live sessions. The per-site page still lists every session.
Also bumps the server version baseline in config.php.example to 0.1.8.
2 new tests (51 total).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>