Add Mellat e-payment, videos/instructions CMS, and legacy domain lookup.

Store gateway credentials per business, initiate/verify Mellat at checkout, and resolve old CMS ids from domains in the migrate modal.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/orders/orders.service.ts

@@ -897,6 +897,8 @@ export class OrdersService {
       amount: Number(transaction.amount),
       posType: transaction.posType,
       gatewayType: transaction.gatewayType,
+      gatewayRef: transaction.gatewayRef ?? null,
+      gatewayTrackId: transaction.gatewayTrackId ?? null,
       transferAccount: transaction.transferAccount,
       transferRefNumber: transaction.transferRefNumber,
       notes: transaction.notes,