From 5dc2edf3acea3829d1b7239e14f507ceea2e12b5 Mon Sep 17 00:00:00 2001
From: rock <locartrock@gmail.com>
Date: Sun, 13 Sep 2026 21:48:21 +0900
Subject: [PATCH] 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)