Discount coupons: import with metadata, statistics and updating existing coupons
Discount coupon import (CSV and copy‑paste) now supports metadata ‑ discount type (percentage or fixed), value, currency, minimum spend and shipping. Metadata is displayed in the folder detail and in the import dialog. After import, a summary shows the number of newly added, updated and skipped coupons. Existing coupons can now be updated by re‑importing with the same code ‑ metadata is overwritten and existing coupons are not added again. The /coupons/import API endpoint accepts the same metadata as the manual import.