feat(free-battle): add FreeBattleFinishRequestDto

SVSim.EmulatedEntrypoint/Models/Dtos/FreeBattle/FreeBattleFinishRequestDto.cs

@@ -0,0 +1,46 @@
+using System.Text.Json.Serialization;
+using MessagePack;
+using SVSim.EmulatedEntrypoint.Models.Dtos.Requests;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos.FreeBattle;
+
+/// <summary>
+/// BattleFinishParam shape for free-battle /finish. Mirrors the rank-battle variant
+/// (Models/Dtos/RankBattle/RankBattleFinishRequestDto.cs) MINUS the <c>sdtrb</c> field
+/// — RankBattleFinishTask extends BattleFinishParam to add sdtrb; FreeBattleFinishTask
+/// does not (see Shadowverse_Code_2026-05-23/Wizard/FreeBattleFinishTask.cs).
+///
+/// Inherits viewer_id / steam_id / steam_session_ticket from <see cref="BaseRequest"/>
+/// so the auth fields survive the translation-middleware round-trip.
+/// </summary>
+[MessagePackObject]
+public sealed class FreeBattleFinishRequestDto : BaseRequest
+{
+    [JsonPropertyName("battle_result")]
+    [Key("battle_result")]
+    public int BattleResult { get; set; }
+
+    [JsonPropertyName("is_retire")]
+    [Key("is_retire")]
+    public int IsRetire { get; set; }
+
+    [JsonPropertyName("recovery_data")]
+    [Key("recovery_data")]
+    public string? RecoveryData { get; set; }
+
+    [JsonPropertyName("class_id")]
+    [Key("class_id")]
+    public int ClassId { get; set; }
+
+    [JsonPropertyName("total_turn")]
+    [Key("total_turn")]
+    public int TotalTurn { get; set; }
+
+    [JsonPropertyName("evolve_count")]
+    [Key("evolve_count")]
+    public int EvolveCount { get; set; }
+
+    [JsonPropertyName("enemy_evolve_count")]
+    [Key("enemy_evolve_count")]
+    public int EnemyEvolveCount { get; set; }
+}