Adds /admin/server-metrics page mirroring the Database/ClickHouse visibility
rules: sidebar entry gated on capabilities.infrastructureEndpoints, backend
controller now has @ConditionalOnProperty(infrastructureendpoints) and
class-level @PreAuthorize('hasRole(ADMIN)'). Dashboard panels are driven
from docs/server-self-metrics.md via the generic
/api/v1/admin/server-metrics/{catalog,instances,query} API — Server Health,
JVM, HTTP & DB pools, and conditionally Alerting + Deployments when their
metrics appear in the catalog. ThemedChart / Line / Area from the design
system; hooks in ui/src/api/queries/admin/serverMetrics.ts. Not yet
browser-verified against a running dev server — backend IT covers the API
end-to-end (8 tests), UI typecheck + production bundle both clean.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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