Louis King 5a20da3afa Add Prometheus metrics endpoint, Alertmanager, and 1h stats window ...

Add /metrics endpoint with Prometheus gauges for nodes, messages,
advertisements, telemetry, trace paths, events, and members. Include
per-node last_seen timestamps for alerting. Add Alertmanager service
to Docker Compose metrics profile with default blackhole receiver.
Add NodeNotSeen alert rule (48h threshold). Add 1h time window to
all windowed metrics alongside existing 24h/7d/30d windows.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-02-18 23:06:07 +00:00

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