Get the administrator operational overview

Delegated Aura access tokens require admin-overview:read; missing scope returns 403 FORBIDDEN. Returns a bounded landing-page summary for authenticated administrators. schemaVersion is required so clients can select a compatible response decoder. Every counter is read from authoritative PostgreSQL by one aggregate statement; OpenSearch and other rebuildable projections are not used.

listingSources.methodAssignments counts source-method assignments, not distinct sources, so its values may sum to more than listingSources.total. ProductListing availability counts include only ACTIVE listings; activeWithoutAvailability identifies active rows without a current source availability assertion. Responses contain no PII, secrets, or embedded collections and always use Cache-Control: no-store.