The view is not an IR operation, Artifact, persistent schema, configured
function, or semantic owner. It must not split the one joint relation into
independent dimensions, enumerate a Cartesian product of exact modes, or
preserve a backend-local support table. The exact Fabric identity owns the
semantic result. Registry implementation identity may participate only in
cache invalidation so stale derived values are recomputed and checked against
that result; serialized Fabric remains the authority.