feat(O6): pod resource observability (app-level metrics)

- APP_UPTIME_SECONDS, APP_ACTIVE_CONNECTIONS, APP_HEAP_BYTES gauges defined
- Pod-level CPU/memory collected by cAdvisor/node-exporter (external)
- Metrics: P1-P13 (app-level subset, rest from K8s monitoring)
This commit is contained in:
2026-09-13 21:48:21 +09:00
parent 60e77929de
commit 5dc2edf3ac

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