ReferProgram

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

Returned by PUT /refer-program.

Field	Type	Notes
user	ObjectId -> User	required · unique
company	ObjectId -> Company	default null
code	string	required · unique
status	string	default active · one of active, inactive
totalReferrals	number	default 0
lastReferredAt	date	default null
createdBy	ObjectId -> Member	default null
updatedBy	ObjectId -> Member	default null
_id	ObjectId
createdAt	date	set once
updatedAt	date