user-engine already runs from net-kingdom/sso-mfa/k8s/user-engine.
The rapp absorbs those manifests (manifest-managed), keeps or
cutovers the dedicated CNPG cluster, and becomes the only apply home.
Record how rapp-* repos wrap first-party apps for Railiance, using
user-engine as the pilot. Opens RMGR-WP-0006 (T01 done) and includes
fix-consistency ID writeback for WP-0004/0005/0006.