feat(bp): /battle_pass/info response DTOs — string-typed wire numerics

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

SVSim.EmulatedEntrypoint/Models/Dtos/BattlePass/BattlePassRewardInfoDto.cs

@@ -0,0 +1,19 @@
+using MessagePack;
+using System.Text.Json.Serialization;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos.BattlePass;
+
+/// <summary>reward_info: { normal: { reward: [...] }, premium: { reward: [...] } }.</summary>
+[MessagePackObject]
+public class BattlePassRewardInfoDto
+{
+    [JsonPropertyName("normal")]
+    [Key("normal")]
+    [JsonIgnore(Condition = JsonIgnoreCondition.Never)]
+    public BattlePassRewardListDto Normal { get; set; } = new();
+
+    [JsonPropertyName("premium")]
+    [Key("premium")]
+    [JsonIgnore(Condition = JsonIgnoreCondition.Never)]
+    public BattlePassRewardListDto Premium { get; set; } = new();
+}