// Package catalognamespaceauthority owns the durable, namespace-keyed Catalog
// authority ledger.
//
// The ledger is an ownership source of truth, not another derived verifier
// cache. NamespaceID, OwnerKind, and OwnerID are permanent once written.
// This package currently provisions only the closed schema and fixed SYSTEM
// owner; runtime readers, writers, and legacy adoption remain separate work.
package catalognamespaceauthority