Documents the 9 new spine crates (calibrate -> certify -> govern) as a
composable library, explicit about current status: each crate is tested in
isolation but not yet wired together or into the live sensing-server
request path (DomainState is 3 separate enum types across
ruview-ood/certify/policy with no automatic bridge). Contrasts against the
two ADR-292-296 remediation items that ARE genuinely enforced today: UDP
source allowlisting (checked on every packet) and the CSI data-policy CI
guard.