Things were working, suddenly regressed

SVSim.EmulatedEntrypoint/Models/Dtos/BasicPuzzle.cs

@@ -0,0 +1,16 @@
+using MessagePack;
+using System.Text.Json.Serialization;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos;
+
+/// <summary>
+/// basic_puzzle.is_display_badge — drives the "practice puzzle" badge on the
+/// footer. Read by MyPageTask.cs:177.
+/// </summary>
+[MessagePackObject]
+public class BasicPuzzle
+{
+    [JsonPropertyName("is_display_badge")]
+    [Key("is_display_badge")]
+    public bool IsDisplayBadge { get; set; }
+}