Database stores Created timestamps using DateTime.Now (local time).
Background service was comparing with DateTime.UtcNow causing 3.5 hour offset (Iran timezone).
Orders would only expire after ~4 hours instead of 30 minutes.
- Added payment_status field to GetOrderByIdResponse and OrderSummaryDto in proto
- Proto version bumped to 0.0.179
- Added PaymentStatus mapping in DiscountOrderService gRPC responses
- Created ExpirePendingOrdersService: expires pending orders after 30 min, releases inventory
- Registered background service in ConfigureServices