List member ID cards

Lists a member's benefit ID cards — card type (medical, dental, vision, or rx), employer, plan, provider network, claims payer, carrier contact details, and the disclaimers printed on the card. Medical, dental and vision cards come from the member's active digital benefit cards; the rx card from the member's Ventegra pharmacy benefit (omitted when the member has no free-medication coverage), which carries no plan, network, or carrier details. Access is scoped to the authenticated principal, and an organization caller sees only cards from employers in its book; a member not visible to the caller returns a 404.