Assumed business rules

These are assumptions, to be checked. The original board doesn't say any of this; each rule was invented so the machine could run. Replace them with real rules as they're decided.
#AssumptionWhere in the model
A1List price 1 200 kr; 25% VAT shown at checkoutLIST_PRICE, the order scene's context rows
A2A custom price is 15% off the list price (from the "15% off" sticky)drafting.customPrice → SEND_OFFER
A3Subscription: 12 months, 4 900 kr. Pack: 3 images, 2 900 krduration and creditLimit transitions
A4Only business customers can pay by invoiceguard isBusinessCustomer
A5An invoice is not paid when it's created. It becomes overdue after 30 days, and sales can cancel an overdue orderpayment.invoiced, payment.overdue
A6Offers expire after 14 days; the customer can decline; sales can withdrawoffer.sent
A7After an offer closes, the customer can make a new inquiryoffer.closed
A8No "Select customer" admin step: the inquiry already carries the customerdrafting
A9A subscription has unlimited downloads; a pack has a credit countguards hasCredits, packIsEmpty
A10You need a profile to contact customer service (from a sticky note)guard hasProfile