Initial commit

Models/ErrorViewModel.cs

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+namespace OneForMe.Models;
+
+public class ErrorViewModel
+{
+    public string? RequestId { get; set; }
+
+    public bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
+}

Models/MenuItem.cs

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+namespace OneForMe.Models;
+
+public class MenuItem
+{
+    public int Id { get; set; }
+    public int OrderId { get; set; }
+    public string Name { get; set; } = string.Empty;
+    public decimal Price { get; set; }
+    
+    public Order? Order { get; set; }
+    public ICollection<OrderItem> OrderItems { get; set; } = new List<OrderItem>();
+}

Models/Order.cs

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+namespace OneForMe.Models;
+
+public class Order
+{
+    public int Id { get; set; }
+    public string OrderCode { get; set; } = string.Empty;
+    public string CreatorName { get; set; } = string.Empty;
+    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+    public DateTime? ClosedAt { get; set; }
+    public bool IsClosed { get; set; } = false;
+    
+    public ICollection<MenuItem> MenuItems { get; set; } = new List<MenuItem>();
+    public ICollection<OrderItem> OrderItems { get; set; } = new List<OrderItem>();
+}

Models/OrderItem.cs

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+namespace OneForMe.Models;
+
+public class OrderItem
+{
+    public int Id { get; set; }
+    public int OrderId { get; set; }
+    public int MenuItemId { get; set; }
+    public string ParticipantName { get; set; } = string.Empty;
+    public string? ParticipantEmail { get; set; }
+    public int Quantity { get; set; } = 1;
+    public DateTime OrderedAt { get; set; } = DateTime.UtcNow;
+    
+    public Order? Order { get; set; }
+    public MenuItem? MenuItem { get; set; }
+}