Real-time anomaly visualization for temperature/pressure readings on the
device-feed dashboard, folklore's two most iconic paranormal markers:
sudden cold spots and rapid barometric swings.
- lib/coldSpot.ts: pure, directly-testable rolling-baseline tracker
(time-aware EMA, since hardware doesn't report on a fixed schedule),
cold-spot and pressure-anomaly classifiers, and a composite
Atmospheric Disturbance Index that rewards correlated anomalies
(a lone signal caps at 50/100; only both deviating together can
reach 100) — modeled on evilMeter.ts's threaded-state pattern.
- components/ColdSpotPanel.tsx/.css: frost treatment + sparkline for
temperature, ripple treatment for pressure, and a crescent-arc
composite gauge (GhostLog's evil-meter gauge as the visual family
reference) that only appears once a device has reported both sensors.
- DevicesPage.tsx: owns per-device baseline state, feeds it from
`reading` frames, falls back to the existing generic row for any
non-numeric temperature/pressure value.
26 new coldSpot.test.ts cases (warm-up, genuine vs. fluctuation,
correlated-vs-solo index, gappy/out-of-order data) and 7 new
DevicesPage integration tests. Full suite: 302/302 passing, tsc clean,
i18n coverage clean (en/es).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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