Resource collaboration
Multi-user access to resources: sharing with specific users, roles/ACLs, concurrent editing.
Why deferred
Resources are single-owner by design; publishing already covers the read-sharing case. Write-sharing needs an ACL model, invitation flow, and (for concurrent editing) CRDT/OT machinery — each a project of its own with no current demand.
Revisit when
Users ask to co-edit rather than just view, or a teams/org concept lands.
Cheaper interim
Publish for read access; export/import content for handoff.