Coupon

Stored in the coupons collection. createdAt and updatedAt are maintained automatically.

Returned by GET /coupons/:code.

Field	Type	Notes
name	string	required · unique
type	string	required · one of percentage, amount
value	number	required
startDate	date	required
endDate	date	required
status	string	default inactive · one of active, inactive, expired
createdBy	ObjectId -> Member
updatedBy	ObjectId -> Member
company	ObjectId -> Company
_id	ObjectId	default "6a95712f932657988a91c080"
createdAt	date	set once
updatedAt	date