Initial: AI code exploration exercise

src/Before/Order.cs

@@ -0,0 +1,20 @@
+namespace Before;
+
+/// <summary>
+/// An order, backed by the database: it derives from <see cref="DbBase"/> and
+/// holds a back-reference to its <see cref="Client"/> (the other end of the
+/// relation). In the "after" situation this becomes a plain POCO with an
+/// <c>OrderDto</c> carrying its data to the WebApp.
+/// </summary>
+public class Order : DbBase
+{
+    /// <summary>Free-text description of what this order is for.</summary>
+    public string Description { get; set; } = string.Empty;
+
+    /// <summary>
+    /// The client that owns this order. Set automatically by
+    /// <see cref="ClientOrders"/> when the order is added to
+    /// <see cref="Client.Orders"/> (navigation fix-up).
+    /// </summary>
+    public Client? Client { get; set; }
+}