OptionalapiExplicit API origin, mirroring @sanity/client's apiHost.
OptionalapiOptionaldatasetOptionalprojectOptionalrequestOptionalresourceOptionaluseHost selection, mirroring @sanity/client: false derives a sibling
addressing the global API host instead of the project host. The engine
uses this for exactly one read — resolving the acting token's
account-global identity from the global /users/me.
The engine reads only project and API metadata from this value.