Reuses the existing per-location /live fetch (no backend change):
- Map dots recolor live by current level (green/amber/red bands, grey when
not measuring/offline) and the tooltip shows the live Leq. Bands are
placeholders until M2 alert thresholds drive the color.
- Status rollup header: total locations, # live vs offline, and a "Loudest now"
Leq callout. Aggregated each 15s refresh.
Refactored the refresh into refreshAll() (Promise.all over loadTile -> updateRollup);
loadTile now also feeds liveState + recolors the matching map dot.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
serversdown
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