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feat: replace debug view polling with real-time SignalR streaming

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The debug view polled every 2s by re-subscribing for full snapshots. Now a
persistent DebugStreamBridgeActor on central subscribes once and receives
incremental Akka stream events from the site, forwarding them to the Blazor
component via callbacks and to the CLI via a new SignalR hub at
/hubs/debug-stream. Adds `debug stream` CLI command with auto-reconnect.
This commit is contained in:
Joseph Doherty
2026-03-21 01:34:53 -04:00
parent d91aa83665
commit fd2e96fea2
15 changed files with 777 additions and 75 deletions
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CLAUDE.md
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@@ -126,7 +126,7 @@ This project contains design documentation for a distributed SCADA system built
### UI & Monitoring
- Central UI: Blazor Server (ASP.NET Core + SignalR) with Bootstrap CSS. No third-party component frameworks (no Blazorise, MudBlazor, Radzen, etc.). Build custom Blazor components for tables, grids, forms, etc.
- UI design: Clean, corporate, internal-use aesthetic. Not flashy. Use the `frontend-design` skill when designing UI pages/components.
- Debug view: 2s polling timer. Health dashboard: 10s polling timer. Deployment status: real-time push via SignalR.
- Debug view: real-time streaming via DebugStreamBridgeActor. Health dashboard: 10s polling timer. Deployment status: real-time push via SignalR.
- Health reports: 30s interval, 60s offline threshold, monotonic sequence numbers, raw error counts per interval.
- Dead letter monitoring as a health metric.
- Site Event Logging: 30-day retention, 1GB storage cap, daily purge, paginated queries with keyword search.