Getting ready to seed more data

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

@@ -1,15 +1,17 @@
 using MessagePack;
+using System.Text.Json.Serialization;
 
 namespace SVSim.EmulatedEntrypoint.Models.Dtos.Responses.Deck;
 
 /// <summary>
-/// Shape consumed by `DeckGroupListData(jsonData, format)` for a single-format call —
-/// the format-scoped decks land under `user_deck_list` (vs. the per-format keys used
+/// Shape consumed by `DeckGroupListData(jsonData, format)` for a single-format call 窶・/// the format-scoped decks land under `user_deck_list` (vs. the per-format keys used
 /// by /practice/deck_list with Format.All).
 /// </summary>
 [MessagePackObject]
 public class DeckListResponse
 {
+    [JsonPropertyName("maintenance_card_list")]
     [Key("maintenance_card_list")] public List<long> MaintenanceCardList { get; set; } = new();
+    [JsonPropertyName("user_deck_list")]
     [Key("user_deck_list")] public List<UserDeck>? UserDeckList { get; set; }
 }

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

@@ -1,5 +1,6 @@
 using MessagePack;
 using SVSim.EmulatedEntrypoint.Models.Dtos.Common;
+using System.Text.Json.Serialization;
 
 namespace SVSim.EmulatedEntrypoint.Models.Dtos.Responses.Deck;
 
@@ -11,7 +12,10 @@ namespace SVSim.EmulatedEntrypoint.Models.Dtos.Responses.Deck;
 [MessagePackObject]
 public class DeckUpdateResponse
 {
+    [JsonPropertyName("user_deck_list")]
     [Key("user_deck_list")] public List<UserDeck>? UserDeckList { get; set; }
+    [JsonPropertyName("achieved_info")]
     [Key("achieved_info")] public Dictionary<string, object> AchievedInfo { get; set; } = new();
+    [JsonPropertyName("reward_list")]
     [Key("reward_list")] public List<Reward> RewardList { get; set; } = new();
 }

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

@@ -1,4 +1,5 @@
 using MessagePack;
+using System.Text.Json.Serialization;
 
 namespace SVSim.EmulatedEntrypoint.Models.Dtos.Responses.Deck;
 
@@ -6,5 +7,6 @@ namespace SVSim.EmulatedEntrypoint.Models.Dtos.Responses.Deck;
 public class EmptyDeckNumberResponse
 {
     /// <summary>The next free deck slot number. 0 indicates "no slots available".</summary>
+    [JsonPropertyName("empty_deck_num")]
     [Key("empty_deck_num")] public int EmptyDeckNum { get; set; }
 }

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

@@ -1,15 +1,17 @@
 using MessagePack;
+using System.Text.Json.Serialization;
 
 namespace SVSim.EmulatedEntrypoint.Models.Dtos.Responses.Deck;
 
 /// <summary>
 /// Single-deck-update response. Consumed by DeckListUtility.DeckUpdate(user_deck,
 /// format, DeckAttributeType.CustomDeck). Shape is "one UserDeck wrapped under
-/// `user_deck` key" — same for update_name, update_sleeve, update_leader_skin,
+/// `user_deck` key" 窶・same for update_name, update_sleeve, update_leader_skin,
 /// update_random_leader_skin.
 /// </summary>
 [MessagePackObject]
 public class SingleDeckResponse
 {
+    [JsonPropertyName("user_deck")]
     [Key("user_deck")] public UserDeck? UserDeck { get; set; }
 }

SVSim.EmulatedEntrypoint/Models/Dtos/Responses/GameStartResponse.cs

@@ -1,11 +1,12 @@
 using MessagePack;
+using System.Text.Json.Serialization;
 
 namespace SVSim.EmulatedEntrypoint.Models.Dtos.Responses;
 
 /// <summary>
 /// Wire-shape mirrors production's <c>/check/game_start</c> response. Several fields here are
 /// NOT read by <c>Cute/GameStartCheckTask.Parse</c> (<c>now_viewer_id</c>, <c>now_name</c>,
-/// <c>now_rank</c> — those are consumed by sibling tasks); they're included because prod sends
+/// <c>now_rank</c> 窶・those are consumed by sibling tasks); they're included because prod sends
 /// them and the boot worked when we matched prod exactly. Removing them is a regression risk
 /// even though the parse-time decompile says they're unused.
 /// </summary>
@@ -13,6 +14,7 @@ namespace SVSim.EmulatedEntrypoint.Models.Dtos.Responses;
 public class GameStartResponse
 {
     /// <summary>The signed-in viewer's internal id. Prod always sends.</summary>
+    [JsonPropertyName("now_viewer_id")]
     [Key("now_viewer_id")]
     public long NowViewerId { get; set; }
 
@@ -20,10 +22,12 @@ public class GameStartResponse
     /// Whether the user has set a data-transfer password. Prod sends a non-null bool;
     /// <c>GameStartCheckTask.Parse</c> gates the read with <c>Keys.Contains</c>.
     /// </summary>
+    [JsonPropertyName("is_set_transition_password")]
     [Key("is_set_transition_password")]
     public bool IsSetTransitionPassword { get; set; }
 
     /// <summary>Viewer display name. Not read by GameStartCheckTask but sent by prod.</summary>
+    [JsonPropertyName("now_name")]
     [Key("now_name")]
     public string NowName { get; set; } = string.Empty;
 
@@ -32,60 +36,71 @@ public class GameStartResponse
     /// Stub for now until rank state is persisted; pinned to RankName_010 / RankName_017
     /// (matches prod's shape).
     /// </summary>
+    [JsonPropertyName("now_rank")]
     [Key("now_rank")]
     public Dictionary<string, string> NowRank { get; set; } = new();
 
     /// <summary>
-    /// Tutorial progress — **sent as a string on the wire** ("100" = tutorial complete).
+    /// Tutorial progress 窶・**sent as a string on the wire** ("100" = tutorial complete).
     /// <c>GameStartCheckTask.Parse</c> calls <c>.ToInt()</c> so LitJson coerces.
     /// </summary>
+    [JsonPropertyName("now_tutorial_step")]
     [Key("now_tutorial_step")]
     public string NowTutorialStep { get; set; } = "100";
 
     /// <summary>
     /// Linked social accounts. Per-entry shape in <see cref="TransitionAccountData"/>.
     /// </summary>
+    [JsonPropertyName("transition_account_data")]
     [Key("transition_account_data")]
     public List<TransitionAccountData> TransitionAccountData { get; set; } = new();
 
     /// <summary>
     /// When present, client overwrites <c>Certification.ViewerId</c> with this value. Optional
-    /// — leave null to omit. The serialization pipeline (JSON + msgpack via the translation
+    /// 窶・leave null to omit. The serialization pipeline (JSON + msgpack via the translation
     /// middleware) drops null properties end-to-end, so the client sees the key as absent.
     /// </summary>
+    [JsonPropertyName("rewrite_viewer_id")]
     [Key("rewrite_viewer_id")]
     public long? RewriteViewerId { get; set; }
 
     /// <summary>
     /// Presence indicates the user has applied for account deletion (value ignored by client at
-    /// this stage). Optional — leave null to omit.
+    /// this stage). Optional 窶・leave null to omit.
     /// </summary>
+    [JsonPropertyName("account_delete_reservation_status")]
     [Key("account_delete_reservation_status")]
     public int? AccountDeleteReservationStatus { get; set; }
 
     // --- Agreement / consent state (all required) ---
 
     /// <summary><c>PlayerStaticData.AgreementState</c> enum.</summary>
+    [JsonPropertyName("tos_state")]
     [Key("tos_state")]
     public int TosState { get; set; }
 
     /// <summary><c>PlayerStaticData.AgreementState</c> enum.</summary>
+    [JsonPropertyName("policy_state")]
     [Key("policy_state")]
     public int PolicyState { get; set; }
 
     /// <summary><c>PlayerStaticData.AgreementState</c> enum.</summary>
+    [JsonPropertyName("kor_authority_state")]
     [Key("kor_authority_state")]
     public int KorAuthorityState { get; set; }
 
     /// <summary>Current Terms of Service document id.</summary>
+    [JsonPropertyName("tos_id")]
     [Key("tos_id")]
     public int TosId { get; set; }
 
     /// <summary>Current Privacy Policy document id.</summary>
+    [JsonPropertyName("policy_id")]
     [Key("policy_id")]
     public int PolicyId { get; set; }
 
     /// <summary>Current Korean authority consent document id.</summary>
+    [JsonPropertyName("kor_authority_id")]
     [Key("kor_authority_id")]
     public int KorAuthorityId { get; set; }
 }

SVSim.EmulatedEntrypoint/Models/Dtos/Responses/IndexResponse.cs

@@ -1,5 +1,6 @@
 using MessagePack;
 using SVSim.Database.Enums;
+using System.Text.Json.Serialization;
 
 namespace SVSim.EmulatedEntrypoint.Models.Dtos.Responses;
 
@@ -8,20 +9,28 @@ public class IndexResponse
 {
     #region Primitive Returns
 
+    [JsonPropertyName("spot_point")]
     [Key("spot_point")]
     public int SpotPoint { get; set; }
+    [JsonPropertyName("is_available_colosseum_free_entry")]
     [Key("is_available_colosseum_free_entry")]
     public bool IsAvailableColosseumFreeEntry { get; set; }
+    [JsonPropertyName("friend_battle_invite_count")]
     [Key("friend_battle_invite_count")]
     public int FriendBattleInviteCount { get; set; }
+    [JsonPropertyName("battle_recovery_status")]
     [Key("battle_recovery_status")]
     public int BattleRecoveryStatus { get; set; }
+    [JsonPropertyName("room_recovery_status")]
     [Key("room_recovery_status")]
     public int RoomRecoveryStatus { get; set; }
+    [JsonPropertyName("is_battle_pass_period")]
     [Key("is_battle_pass_period")]
     public int IsBattlePassPeriod { get; set; }
+    [JsonPropertyName("card_set_id_for_resource_dl_view")]
     [Key("card_set_id_for_resource_dl_view")]
     public int CardSetIdForResourceDlView { get; set; }
+    [JsonPropertyName("deck_format")]
     [Key("deck_format")]
     public int DeckFormat { get; set; } = 1;
 
@@ -29,12 +38,15 @@ public class IndexResponse
 
     #region Basic User Data
 
+    [JsonPropertyName("user_tutorial")]
     [Key("user_tutorial")]
     public UserTutorial UserTutorial { get; set; } = new UserTutorial();
 
+    [JsonPropertyName("user_info")]
     [Key("user_info")]
     public UserInfo UserInfo { get; set; } = new UserInfo();
 
+    [JsonPropertyName("user_crystal_count")]
     [Key("user_crystal_count")]
     public UserCurrency UserCurrency { get; set; } = new UserCurrency();
 
@@ -42,45 +54,56 @@ public class IndexResponse
 
     #region Inventory Data
 
+    [JsonPropertyName("user_item_list")]
     [Key("user_item_list")]
     public List<UserItem> UserItems { get; set; } = new();
 
+    [JsonPropertyName("user_deck_rotation")]
     [Key("user_deck_rotation")]
     public UserFormatDeckInfo UserRotationDecks { get; set; } = new();
 
+    [JsonPropertyName("user_deck_unlimited")]
     [Key("user_deck_unlimited")]
     public UserFormatDeckInfo UserUnlimitedDecks { get; set; } = new();
 
+    [JsonPropertyName("user_deck_my_rotation")]
     [Key("user_deck_my_rotation")]
     public UserFormatDeckInfo UserMyRotationDecks { get; set; } = new();
 
+    [JsonPropertyName("user_card_list")]
     [Key("user_card_list")]
     public List<UserCard> UserCards { get; set; } = new();
 
+    [JsonPropertyName("user_class_list")]
     [Key("user_class_list")]
     public List<UserClass> UserClasses { get; set; } = new();
 
     /// <summary>
     /// Wire is an array; parser iterates by index (LoadDetail.cs:358-360).
     /// </summary>
+    [JsonPropertyName("user_sleeve_list")]
     [Key("user_sleeve_list")]
     public List<SleeveIdentifier> Sleeves { get; set; } = new();
 
+    [JsonPropertyName("user_emblem_list")]
     [Key("user_emblem_list")]
     public List<EmblemIdentifier> UserEmblems { get; set; } = new();
 
+    [JsonPropertyName("user_degree_list")]
     [Key("user_degree_list")]
     public List<DegreeIdentifier> UserDegrees { get; set; } = new();
 
     /// <summary>
     /// Wire is an array; parser iterates by index (LoadDetail.cs:348-356).
     /// </summary>
+    [JsonPropertyName("user_leader_skin_list")]
     [Key("user_leader_skin_list")]
     public List<UserLeaderSkin> LeaderSkins { get; set; } = new();
 
     /// <summary>
     /// Wire is string[]; parser calls .ToString() on each element (LoadDetail.cs:387-392).
     /// </summary>
+    [JsonPropertyName("user_mypage_list")]
     [Key("user_mypage_list")]
     public List<string> MyPageBackgrounds { get; set; } = new();
 
@@ -92,15 +115,19 @@ public class IndexResponse
     /// Wire is an array of 5 entries; parser uses deck_format as discriminator
     /// (LoadDetail.cs:527-538).
     /// </summary>
+    [JsonPropertyName("user_rank")]
     [Key("user_rank")]
     public List<UserRankInfo> UserRankInfo { get; set; } = new();
 
+    [JsonPropertyName("user_rank_match_list")]
     [Key("user_rank_match_list")]
     public List<UserRankedMatches> UserRankedMatches { get; set; } = new();
 
+    [JsonPropertyName("daily_login_bonus")]
     [Key("daily_login_bonus")]
     public DailyLoginBonus DailyLoginBonus { get; set; } = new();
 
+    [JsonPropertyName("challenge_config")]
     [Key("challenge_config")]
     public ArenaConfig ArenaConfig { get; set; } = new();
 
@@ -108,6 +135,7 @@ public class IndexResponse
 
     #region Global Data
 
+    [JsonPropertyName("red_ether_overwrite_list")]
     [Key("red_ether_overwrite_list")]
     public List<RedEtherOverride> RedEtherOverrides { get; set; } = new();
 
@@ -115,71 +143,94 @@ public class IndexResponse
     /// Wire is a flat number[]; parser passes it straight to SetMaintenanceCardIds
     /// (LoadDetail.cs:165).
     /// </summary>
+    [JsonPropertyName("maintenance_card_list")]
     [Key("maintenance_card_list")]
     public List<long> MaintenanceCards { get; set; } = new();
 
+    /// <summary>
+    /// Client's ArenaData(JsonData) ctor reads data[0] unconditionally inside the
+    /// LoadDetail.cs:261 Keys.Contains("arena_info") branch — an empty list crashes
+    /// /load/index with ArgumentOutOfRangeException. Send null (omitted on wire) when
+    /// there's no arena to advertise.
+    /// </summary>
+    [JsonPropertyName("arena_info")]
     [Key("arena_info")]
-    public List<ArenaInfo> ArenaInfos { get; set; } = new();
+    public List<ArenaInfo>? ArenaInfos { get; set; }
 
     /// <summary>
     /// Wire is an array; client uses POSITIONAL logic (index >= 24 = master ranks,
     /// LoadDetail.cs:417-422). Order must match repository's ordering.
     /// </summary>
+    [JsonPropertyName("rank_info")]
     [Key("rank_info")]
     public List<RankInfo> RankInfo { get; set; } = new();
 
     /// <summary>
     /// Wire is an array; parser iterates by index (LoadDetail.cs:425-434).
     /// </summary>
+    [JsonPropertyName("class_exp")]
     [Key("class_exp")]
     public List<ClassExp> ClassExp { get; set; } = new();
 
+    [JsonPropertyName("loading_exclusion_card_list")]
     [Key("loading_exclusion_card_list")]
     public List<long> LoadingTipCardExclusions { get; set; } = new();
 
+    [JsonPropertyName("default_setting")]
     [Key("default_setting")]
     public DefaultSettings DefaultSettings { get; set; } = new();
 
+    [JsonPropertyName("unlimited_restricted_base_card_id_list")]
     [Key("unlimited_restricted_base_card_id_list")]
     public Dictionary<string, int> UnlimitedBanList { get; set; } = new();
 
     /// <summary>
-    /// Client unconditionally accesses [1] and [Count-1] (LoadDetail.cs:184) — list MUST
+    /// Client unconditionally accesses [1] and [Count-1] (LoadDetail.cs:184) 窶・list MUST
     /// have at least 2 entries or the client crashes.
     /// </summary>
+    [JsonPropertyName("rotation_card_set_id_list")]
     [Key("rotation_card_set_id_list")]
     public List<CardSetIdentifier> RotationSets { get; set; } = new();
 
     /// <summary>
     /// Wire is a flat number[]; parser iterates and reads .ToInt() (LoadDetail.cs:463-468).
     /// </summary>
+    [JsonPropertyName("reprinted_base_card_ids")]
     [Key("reprinted_base_card_ids")]
     public List<long> ReprintedCards { get; set; } = new();
 
+    [JsonPropertyName("spot_cards")]
     [Key("spot_cards")]
     public Dictionary<string, int> SpotCards { get; set; } = new();
 
+    [JsonPropertyName("pre_release_info")]
     [Key("pre_release_info")]
     public PreReleaseInfo? PreReleaseInfo { get; set; }
 
+    [JsonPropertyName("my_rotation_info")]
     [Key("my_rotation_info")]
     public MyRotationInfo? MyRotationInfo { get; set; }
 
+    [JsonPropertyName("avatar_info")]
     [Key("avatar_info")]
     public MyRotationInfo? AvatarRotationInfo { get; set; }
 
+    [JsonPropertyName("feature_maintenance_list")]
     [Key("feature_maintenance_list")]
     public List<FeatureMaintenance> FeatureMaintenances { get; set; } = new();
 
+    [JsonPropertyName("special_crystal_info")]
     [Key("special_crystal_info")]
     public List<SpecialCrystalInfo> SpecialCrystalInfos { get; set; } = new();
 
+    [JsonPropertyName("battle_pass_level_info")]
     [Key("battle_pass_level_info")]
     public Dictionary<string, BattlePassLevel>? BattlePassLevelInfo { get; set; }
 
     /// <summary>
     /// Wire is string[]; parser calls .ToString() on each element (LoadDetail.cs:493-499).
     /// </summary>
+    [JsonPropertyName("open_battle_field_id_list")]
     [Key("open_battle_field_id_list")]
     public List<string> OpenBattlefieldIds { get; set; } = new();
 
@@ -187,9 +238,11 @@ public class IndexResponse
 
     #region Misc Data
 
+    [JsonPropertyName("loot_box_regulation")]
     [Key("loot_box_regulation")]
     public LootBoxRegulations LootBoxRegulations { get; set; } = new();
 
+    [JsonPropertyName("gathering_info")]
     [Key("gathering_info")]
     public GatheringInfo GatheringInfo { get; set; } = new();
 
@@ -197,6 +250,7 @@ public class IndexResponse
     /// Spec is unclear whether this is returned at /load/index or only at /config/* endpoints
     /// (load-index.md line 390). Pending live-capture confirmation; harmless extra.
     /// </summary>
+    [JsonPropertyName("user_config")]
     [Key("user_config")]
     public UserConfig UserConfig { get; set; } = new();
 

SVSim.EmulatedEntrypoint/Models/Dtos/Responses/Practice/PracticeDeckListResponse.cs

@@ -1,21 +1,25 @@
 using MessagePack;
+using System.Text.Json.Serialization;
 
 namespace SVSim.EmulatedEntrypoint.Models.Dtos.Responses.Practice;
 
 /// <summary>
 /// Same shape consumed by DeckGroupListData(jsonData, Format.All). Per-format keys are
-/// conditional — omit (don't send empty arrays) for formats the server doesn't enable.
+/// conditional 窶・omit (don't send empty arrays) for formats the server doesn't enable.
 /// </summary>
 [MessagePackObject]
 public class PracticeDeckListResponse
 {
     /// <summary>Card ids currently disabled for maintenance (client unions with global list).</summary>
+    [JsonPropertyName("maintenance_card_list")]
     [Key("maintenance_card_list")] public List<long> MaintenanceCardList { get; set; } = new();
 
+    [JsonPropertyName("user_deck_rotation")]
     [Key("user_deck_rotation")] public List<UserDeck>? UserDeckRotation { get; set; }
+    [JsonPropertyName("user_deck_unlimited")]
     [Key("user_deck_unlimited")] public List<UserDeck>? UserDeckUnlimited { get; set; }
 
     // The remaining format keys (pre_rotation, crossover, my_rotation, avatar, default_deck_list,
     // trial_deck_list, crossover_trial_deck_list, build_deck_list, user_leader_skin_setting_list)
-    // are all conditional — added when those formats are enabled.
+    // are all conditional 窶・added when those formats are enabled.
 }

SVSim.EmulatedEntrypoint/Models/Dtos/Responses/Practice/PracticeFinishResponse.cs

@@ -1,5 +1,6 @@
 using MessagePack;
 using SVSim.EmulatedEntrypoint.Models.Dtos.Common;
+using System.Text.Json.Serialization;
 
 namespace SVSim.EmulatedEntrypoint.Models.Dtos.Responses.Practice;
 
@@ -7,20 +8,25 @@ namespace SVSim.EmulatedEntrypoint.Models.Dtos.Responses.Practice;
 public class PracticeFinishResponse
 {
     /// <summary>Class XP gained this match.</summary>
+    [JsonPropertyName("get_class_experience")]
     [Key("get_class_experience")] public int GetClassExperience { get; set; }
 
     /// <summary>Total accumulated class XP for the played class after this match.</summary>
+    [JsonPropertyName("class_experience")]
     [Key("class_experience")] public int ClassExperience { get; set; }
 
     /// <summary>Class level after this match (post-promotion if XP rolled over).</summary>
+    [JsonPropertyName("class_level")]
     [Key("class_level")] public int ClassLevel { get; set; } = 1;
 
     /// <summary>
     /// Missions / achievements / rewards rollup. Empty dict means "nothing accumulated"
     /// (spec: parser tolerates empty object).
     /// </summary>
+    [JsonPropertyName("achieved_info")]
     [Key("achieved_info")] public Dictionary<string, object> AchievedInfo { get; set; } = new();
 
     /// <summary>Standard reward grants applied to user's inventory. Empty by default.</summary>
+    [JsonPropertyName("reward_list")]
     [Key("reward_list")] public List<Reward> RewardList { get; set; } = new();
 }

SVSim.EmulatedEntrypoint/Models/Dtos/Responses/Practice/PracticeOpponent.cs

@@ -1,4 +1,5 @@
 using MessagePack;
+using System.Text.Json.Serialization;
 
 namespace SVSim.EmulatedEntrypoint.Models.Dtos.Responses.Practice;
 
@@ -6,38 +7,49 @@ namespace SVSim.EmulatedEntrypoint.Models.Dtos.Responses.Practice;
 public class PracticeOpponent
 {
     /// <summary>Practice slot id (unique per entry; AI opponent identifier).</summary>
+    [JsonPropertyName("practice_id")]
     [Key("practice_id")] public int PracticeId { get; set; }
 
     /// <summary>
     /// Text-table id resolved client-side via Data.Master.GetPracticeText(text_id).
-    /// Stringified int — client calls .ToString() before lookup. Sent as string to be safe.
+    /// Stringified int 窶・client calls .ToString() before lookup. Sent as string to be safe.
     /// </summary>
+    [JsonPropertyName("text_id")]
     [Key("text_id")] public string TextId { get; set; } = string.Empty;
 
     /// <summary>Class (leader) id the AI plays.</summary>
+    [JsonPropertyName("class_id")]
     [Key("class_id")] public int ClassId { get; set; }
 
     /// <summary>Portrait / character id (which leader art the AI uses).</summary>
+    [JsonPropertyName("chara_id")]
     [Key("chara_id")] public int CharaId { get; set; }
 
     /// <summary>Title-degree id shown next to the AI's name.</summary>
+    [JsonPropertyName("degree_id")]
     [Key("degree_id")] public int DegreeId { get; set; }
 
     /// <summary>AI deck-strength tier (drives which preset deck the AI uses).</summary>
+    [JsonPropertyName("ai_deck_level")]
     [Key("ai_deck_level")] public int AiDeckLevel { get; set; }
 
     /// <summary>AI decision-making tier.</summary>
+    [JsonPropertyName("ai_logic_level")]
     [Key("ai_logic_level")] public int AiLogicLevel { get; set; }
 
     /// <summary>Starting HP for the AI side (often 20).</summary>
+    [JsonPropertyName("ai_max_life")]
     [Key("ai_max_life")] public int AiMaxLife { get; set; } = 20;
 
     /// <summary>3D battle-field asset id (string on the wire; client int.TryParse's it).</summary>
+    [JsonPropertyName("battle3dfield_id")]
     [Key("battle3dfield_id")] public string Battle3dFieldId { get; set; } = "1";
 
     /// <summary>Optional. true => entry disabled, client prepends maintenance suffix.</summary>
+    [JsonPropertyName("is_maintenance")]
     [Key("is_maintenance")] public bool? IsMaintenance { get; set; }
 
     /// <summary>true => entry is a special "campaign" practice (event-tied).</summary>
+    [JsonPropertyName("is_campaign_practice")]
     [Key("is_campaign_practice")] public bool IsCampaignPractice { get; set; }
 }

SVSim.EmulatedEntrypoint/Models/Dtos/Responses/Practice/PracticeStartResponse.cs

@@ -1,4 +1,5 @@
 using MessagePack;
+using System.Text.Json.Serialization;
 
 namespace SVSim.EmulatedEntrypoint.Models.Dtos.Responses.Practice;
 
@@ -8,7 +9,8 @@ public class PracticeStartResponse
     /// <summary>
     /// Optional mission/achievement evaluation snapshot. Spec: safe to omit entirely;
     /// client tolerates absence (defensive `Keys.Contains` check). Always null in our
-    /// minimal impl — we don't model missions.
+    /// minimal impl 窶・we don't model missions.
     /// </summary>
+    [JsonPropertyName("mission_parameter")]
     [Key("mission_parameter")] public object? MissionParameter { get; set; }
 }

SVSim.EmulatedEntrypoint/Models/Dtos/Responses/SpecialTitleCheckResponse.cs

@@ -1,4 +1,5 @@
 using MessagePack;
+using System.Text.Json.Serialization;
 
 namespace SVSim.EmulatedEntrypoint.Models.Dtos.Responses;
 
@@ -9,6 +10,7 @@ public class SpecialTitleCheckResponse
     /// Numeric string. "0"/"1" are the built-in default title screens; any other value
     /// is treated as an asset-bundle id. When omitted, the client defaults to "0".
     /// </summary>
+    [JsonPropertyName("title_image_id")]
     [Key("title_image_id")]
     public string? TitleImageId { get; set; }
 }