Projektdateien hinzufügen.

Webshop.Domain/Entities/PaymentMethod.cs

@@ -0,0 +1,29 @@
+using System;
+using System.ComponentModel.DataAnnotations;
+
+namespace Webshop.Domain.Entities;
+
+/// <summary>
+/// Konfigurierbare Zahlungsoptionen für den Checkout.
+/// </summary>
+public class PaymentMethod
+{
+    [Key]
+    public Guid Id { get; set; }
+
+    [Required]
+    [MaxLength(100)]
+    public string Name { get; set; }
+
+    [MaxLength(500)]
+    public string? Description { get; set; }
+
+    [Required]
+    public bool IsActive { get; set; }
+
+    [Required]
+    [MaxLength(50)]
+    public string PaymentGatewayType { get; set; } // "Stripe", "PayPal", etc.
+
+    public decimal? ProcessingFee { get; set; }
+}