The permission domain's identity: a LOOKUP KEY that drives Revoke resolution, audit-entity mapping, and icon selection in PermissionEngine. Never renamed.
OptionalLabelBusiness-friendly heading shown to the user (see GetSharingDomainDisplayLabel). Optional so
consumers that build this shape themselves keep compiling; the template falls back to DomainName.
One collapsible domain section rendered by UserSharingCenterComponent. Exported because consumers occasionally want to render their own custom layout around the same shape.