feat: add 服务端

PetWash.Api/Models/DeviceStatus.cs

@@ -0,0 +1,10 @@
+namespace PetWash.Api.Models;
+
+public class DeviceStatus
+{
+    public string Status { get; set; } = "Idle";
+    public bool DoorOpen { get; set; }
+    public bool IsWashing { get; set; }
+    public int? CurrentOrderId { get; set; }
+    public DateTime LastUpdated { get; set; }
+}

PetWash.Api/Models/Order.cs

@@ -0,0 +1,26 @@
+namespace PetWash.Api.Models;
+
+public class Order
+{
+    public int Id { get; set; }
+    public int PackageId { get; set; }
+    public Package? Package { get; set; }
+    public DateTime CreatedAt { get; set; }
+    public OrderStatus Status { get; set; }
+    public bool IsPaid { get; set; }
+    public DateTime? PaidAt { get; set; }
+    public DateTime? StartedAt { get; set; }
+    public DateTime? CompletedAt { get; set; }
+}
+
+public enum OrderStatus
+{
+    Created,
+    WaitingPayment,
+    Paid,
+    DoorOpened,
+    DoorClosed,
+    Washing,
+    Completed,
+    Cancelled
+}

PetWash.Api/Models/Package.cs

@@ -0,0 +1,10 @@
+namespace PetWash.Api.Models;
+
+public class Package
+{
+    public int Id { get; set; }
+    public string Name { get; set; } = string.Empty;
+    public decimal Price { get; set; }
+    public int DurationMinutes { get; set; }
+    public string Description { get; set; } = string.Empty;
+}