feat: MyBatis SQL Prometheus metrics (hotfix, no config-repo)
Add SqlMetricsInterceptor and holdingk.mybatis.metrics in holdingk-core; enable via application-test.yaml for local/test. CI: core source check and deploy-stage config-repo path fix. Config-repo v__4 is a separate change.
Co-authored-by: Cursor cursoragent@cursor.com