Phase 2: Backend API Implementation - DTOs, Services, and Controllers

src/Hospitality.Backend/DTOs/TransactionDto.cs

@@ -0,0 +1,18 @@
+namespace Hospitality.Backend.DTOs;
+
+public record CreateTransactionRequest(
+    Guid QrCode,
+    Guid ProductId,
+    int Amount
+);
+
+public record TransactionResponse(
+    Guid Id,
+    Guid PersonId,
+    string PersonName,
+    Guid ProductId,
+    string ProductName,
+    int Amount,
+    DateTime Timestamp,
+    Guid? StaffId
+);