Forgot unversioned xd

SVSim.EmulatedEntrypoint/Models/Dtos/Responses/Deck/DeckUpdateResponse.cs

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+using MessagePack;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Common;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos.Responses.Deck;
+
+/// <summary>
+/// /deck/update response. Minimum-viable per spec is just {achieved_info, reward_list};
+/// the full shape also includes the refreshed deck list. We include user_deck_list to
+/// save the client a follow-up /deck/info round-trip.
+/// </summary>
+[MessagePackObject]
+public class DeckUpdateResponse
+{
+    [Key("user_deck_list")] public List<UserDeck>? UserDeckList { get; set; }
+    [Key("achieved_info")] public Dictionary<string, object> AchievedInfo { get; set; } = new();
+    [Key("reward_list")] public List<Reward> RewardList { get; set; } = new();
+}