Introduces promotion-related fields to the Order interface and displays promotion discounts in both the order details and order table. Adds a PromotionDetailsModal component for viewing detailed promotion analytics and eligibility, and integrates it into the PromotionsList with a new 'view details' action.
Introduces the optional 'paidAt' field to the Order interface and updates both the order details page and the order table to display the payment date. Also adds sorting by 'paidAt' in the order table and improves date formatting for both order and payment dates.
