fix(dto): align daily_login_bonus DTOs with prod wire shape

- numeric fields ship as quoted strings (campaign_id, img, effect_id,
  reward_type, reward_detail_id, reward_number)
- DailyLoginBonus.Campaign is a List<>, not a single object
- LoginBonusCampaign.Img replaces Image (string, asset-key)
- add IsOneDayMultiRewards (SpecialData-only on client, byte-faithful)

SVSim.EmulatedEntrypoint/Models/Dtos/LoginBonusReward.cs

@@ -3,34 +3,23 @@ using System.Text.Json.Serialization;
 
 namespace SVSim.EmulatedEntrypoint.Models.Dtos;
 
+/// <summary>
+/// One day's reward in a login-bonus cycle. All numeric fields ship as quoted strings on
+/// the wire — prod-confirmed shape from traffic_prod_tutorial.ndjson. Client uses
+/// JsonData.ToInt() so it tolerates either form, but we match prod exactly.
+/// </summary>
 [MessagePackObject]
 public class LoginBonusReward
 {
-    /// <summary>
-    /// The effect shown ingame.
-    /// </summary>
-    [JsonPropertyName("effect_id")]
-    [Key("effect_id")]
-    public int EffectId { get; set; }
-    
-    /// <summary>
-    /// The type of reward.
-    /// </summary>
-    [JsonPropertyName("reward_type")]
-    [Key("reward_type")]
-    public int RewardType { get; set; }
-    
-    /// <summary>
-    /// A more specified reward type (ie if a pack, which pack).
-    /// </summary>
-    [JsonPropertyName("reward_detail_id")]
-    [Key("reward_detail_id")]
-    public int RewardDetailId { get; set; }
-    
-    /// <summary>
-    /// The count of the reward.
-    /// </summary>
-    [JsonPropertyName("reward_number")]
-    [Key("reward_number")]
-    public int RewardNumber { get; set; }
-}
+    [JsonPropertyName("effect_id")] [Key("effect_id")]
+    public string EffectId { get; set; } = "0";
+
+    [JsonPropertyName("reward_type")] [Key("reward_type")]
+    public string RewardType { get; set; } = "0";
+
+    [JsonPropertyName("reward_detail_id")] [Key("reward_detail_id")]
+    public string RewardDetailId { get; set; } = "0";
+
+    [JsonPropertyName("reward_number")] [Key("reward_number")]
+    public string RewardNumber { get; set; } = "0";
+}