storage.nfs shrinks to the deployment-specific server address: export_base moves into svc-storage-nfs-server's services.yml (the server dictates where exports root) and the mount protocol version into svc-storage-nfs-client's services.yml (the client owns how it mounts). Both are read through utils.storage.nfs loaders by the nfs lookups, the env handler and 00_topology, eliminating the unrendered-variables class for these values; the group_vars assert shrinks accordingly and the swarm test extras stop restating role defaults.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>