jetstream v2 in zig stream.waow.tech

per-key archive metrics + operator consumers dashboard master

the key ring renders one prometheus series set per key (served bytes, requests, throttles, live bucket level, configured rate) appended to /metrics; counters survive ring reloads alongside the bucket. new grafana dashboard deploy/grafana/stream-consumers.json answers 'who is putting load on the system' per key — operator-facing. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>


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