Returns items/services catalog; current implementation returns sample stub rows. Both /api/v1/integrations/quickbooks/* and /api/v1/quickbooks/* map to the same ApiQuickBooksController method (getItems). This family is a path alias that binds controller methods directly (for example `export const GET = controller.getAccounts()`) and relies on controller-level error handling.
Success response 200 · schema QuickBooksV1ApiSuccess