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docs(kpi): K17 — #26 KpiHistory component doc + README/CLAUDE + cross-component interactions + completion-design update

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Joseph Doherty
2026-06-17 20:52:12 -04:00
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docs/requirements/Component-HealthMonitoring.md
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@@ -116,3 +116,4 @@ These tiles are **point-in-time** like the Notification Outbox and Site Call Aud
- **Central UI**: Health Monitoring Dashboard displays aggregated metrics.
- **Communication Layer**: Health reports flow as periodic messages.
- **KPI History (#26)**: emits `IKpiSampleSource` (`SiteHealthKpiSampleSource`, per-Site) consumed by the KpiHistory recorder (#26). It reads the in-memory `ICentralHealthAggregator.GetAllSiteStates()` (no DB), turning the per-site snapshot — previously sequence-numbered every 30s but discarded — into trends (`connectionsUp`/`connectionsDown`, `scriptErrors`, `alarmEvalErrors`, `sfBufferDepth`, `deadLetters`, `parkedMessages`, `deployedInstances`/`enabledInstances`/`disabledInstances`, `auditBacklogPending`, `eventLogWriteFailures`) rendered in the dashboard's per-site `KpiTrendChart` panel. See [Component-KpiHistory.md](Component-KpiHistory.md).