zone.stratos.space.listBlobs

List the CIDs of blobs referenced by an account's records within a permissioned space, optionally since some revision of that repo. Spec-shaped mirror of com.atproto.space.listBlobs (atproto#5187): callable with standard user auth (the caller must be a member of the space) or with a space credential for that space (for syncing services). Blobs behind permissioned records are never enumerated by an unauthenticated endpoint.