feat(api): .NET 10 multi-tenant REST API

Full backend implementation:
- Multi-tenant cafe/restaurant management (menus, orders, tables, staff)
- POS order flow with ZarinPal and Snappfood payment integration
- OTP authentication via Kavenegar SMS
- QR digital menu with public discover/finder endpoints
- Customer loyalty, coupons, CRM
- PostgreSQL via EF Core, Redis for caching/sessions
- Background jobs, webhook handlers
- Full migration history

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/Meezi.API/Models/Orders/OrderDtos.cs

@@ -0,0 +1,81 @@
+using Meezi.Core.Enums;
+
+namespace Meezi.API.Models.Orders;
+
+public record OrderItemDto(
+    string Id,
+    string MenuItemId,
+    string MenuItemName,
+    int Quantity,
+    decimal UnitPrice,
+    string? Notes,
+    bool IsVoided = false,
+    DateTime? VoidedAt = null);
+
+public record TransferTableRequest(string TargetTableId);
+
+public record OrderDto(
+    string Id,
+    string CafeId,
+    string? BranchId,
+    string? TableId,
+    string? TableNumber,
+    string? GuestName,
+    string? GuestPhone,
+    string? CustomerName,
+    string? CustomerPhone,
+    string? CustomerId,
+    string? EmployeeId,
+    OrderType OrderType,
+    OrderSource Source,
+    OrderStatus Status,
+    decimal Subtotal,
+    decimal TaxTotal,
+    decimal DiscountAmount,
+    decimal Total,
+    decimal PaidAmount,
+    DateTime CreatedAt,
+    int DisplayNumber,
+    IReadOnlyList<OrderItemDto> Items,
+    IReadOnlyList<PaymentDto> Payments);
+
+public record AppendOrderItemsRequest(IReadOnlyList<CreateOrderItemRequest> Items);
+
+public record UpdateOrderSessionRequest(
+    string? GuestName,
+    string? GuestPhone,
+    string? CustomerId);
+
+
+public record CreateOrderItemRequest(string MenuItemId, int Quantity, string? Notes);
+
+public record CreateOrderRequest(
+    OrderType OrderType,
+    string? BranchId,
+    string? TableId,
+    string? ReservationId,
+    string? GuestName,
+    string? GuestPhone,
+    string? CustomerId,
+    string? CouponId,
+    IReadOnlyList<CreateOrderItemRequest> Items);
+
+public record UpdateOrderStatusRequest(OrderStatus Status);
+
+public record CreatePaymentRequest(PaymentMethod Method, decimal Amount, string? Reference);
+
+public record RecordPaymentsRequest(
+    IReadOnlyList<CreatePaymentRequest> Payments,
+    int? LoyaltyPointsToRedeem = null);
+
+public record PaymentDto(string Id, PaymentMethod Method, decimal Amount, PaymentStatus Status, string? Reference);
+
+public record LiveOrderDto(
+    string Id,
+    int DisplayNumber,
+    OrderStatus Status,
+    string? TableNumber,
+    OrderType OrderType,
+    decimal Total,
+    DateTime CreatedAt,
+    IReadOnlyList<OrderItemDto> Items);