Things were working, suddenly regressed

SVSim.EmulatedEntrypoint/Models/Dtos/DefaultLeaderSkinSetting.cs

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+using MessagePack;
+using System.Text.Json.Serialization;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos;
+
+/// <summary>
+/// Default leader skin per class (8 entries — one per class). Surfaced under
+/// <c>/deck/info data.user_leader_skin_setting_list</c>. Despite the <c>user_</c> prefix on the
+/// wire, this is GLOBAL data (same for every viewer) — naming is the client's, not ours.
+/// </summary>
+[MessagePackObject]
+public class DefaultLeaderSkinSetting
+{
+    [JsonPropertyName("class_id")]
+    [Key("class_id")]
+    public int ClassId { get; set; }
+
+    [JsonPropertyName("is_random_leader_skin")]
+    [Key("is_random_leader_skin")]
+    public int IsRandomLeaderSkin { get; set; }
+
+    [JsonPropertyName("leader_skin_id")]
+    [Key("leader_skin_id")]
+    public int LeaderSkinId { get; set; }
+}