Organization configuration. channels carries the per-connected-channel config the actor can view (including per-Feature authorizationStatus); services carries the service-level capability catalog — the engagement and content config for every supported service + channelType, independent of which channels are connected (e.g. for composing before a channel is connected); collaborationRoleAbilities carries the Roles ability catalog.

@public is set per field rather than on the type, so a field is external only when tagged. A new field is internal until it carries its own @public.