/events lists every alert from the last 24 hours to 90 days, open or
cleared, with how long each lasted, failed checks and its ticket. Filters
(device, type, severity, state, range) live in the URL, so device pages
and tickets link straight to a device's history. A "Recurring" table
lists alerts that fired more than once on the same target. On phones the
rows become cards.
/api/events/history backs it (100 per page). The existing /api/events is
unchanged.
/health and the dashboard's monitor indicator now call the monitor
stalled after five missed polls (at least 10 minutes) instead of a fixed
20, and /health reports the monitor's age.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
