Class leader fixes

SVSim.EmulatedEntrypoint/Models/Dtos/UserLeaderSkinSetting.cs

@@ -0,0 +1,26 @@
+using MessagePack;
+using System.Text.Json.Serialization;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos;
+
+/// <summary>
+/// Per-class entry of <c>/deck/info data.user_leader_skin_setting_list</c>. Per-viewer state:
+/// each viewer's class-level "active leader skin" preference, used as a fallback when a deck
+/// has <c>leader_skin_id == 0</c>. Sourced from <c>ViewerClassData.LeaderSkin</c>; mutated by
+/// <c>POST /leader_skin/set</c>.
+/// </summary>
+[MessagePackObject]
+public class UserLeaderSkinSetting
+{
+    [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; }
+}