List this agency's sub-account clients
Read-only list of every sub-account under this agency, name, plan, status, health, campaign count, and trailing-30-day revenue. Same data shape as GET /partner/sub-accounts (the JWT-authenticated app route), minus the agency’s own tenant (that route prepends it as a first-class row for the app’s UI; an integration asking “list my clients” has no use for its own account showing up as one of them).