- HealthModel (pure): 0-100 score + plain-language diagnosis + rating
- SystemAlert/AlertKind/AlertThresholds + pure AlertEvaluator (sustained-breach)
- AlertCenter (@MainActor): per-cycle health + alert evaluation, de-dup by kind,
inbox (capped), native UserNotifications on transition into a condition
- Covers: sustained high CPU, critical memory pressure, disk full, thermal,
runaway process, low battery
- Wire evaluate() into SystemMonitor; request notif auth on launch
- HealthCardView (score ring + diagnosis) + AlertsInboxView in Power & Storage;
health score + alert badge in menu bar
- Renamed model Alert->SystemAlert to avoid SwiftUI.Alert shadowing
- 10 new tests incl. AlertCenter de-dup integration (52 total green)
- Visual smoke: Energy + Disk I/O columns render with live data under load
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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