feat(battle-engine): full Unity/VFX/god-object shims + expanded copy closure (2570 files)

Authored Unity primitive/object-model shim, VFX layer (control-flow-preserving, InstantVfx never invokes its action -- headless suppression), god-object stubs (GameMgr/EffectMgr/UIManager with faithfully-extracted nested enums), View/UI/Touch tree, LitJson+BetterList+Tuple copied, third-party stubs. Discovered Roslyn header-error masking: fixing class-header type errors unmasks body references, so the true copy closure is ~2570 files (was 782 under masking). Errors: masked-25720 -> 268; our shim files compile clean. Remaining: ~50 residual shim/external types, 24 NGUI UI-base overrides, static-type fixes, plus likely 1-2 more unmask waves.

SVSim.BattleEngine/Engine/FreeMatchResultReporter.cs

@@ -0,0 +1,63 @@
+using System.Collections.Generic;
+using LitJson;
+using Wizard;
+using Wizard.Lottery;
+
+public class FreeMatchResultReporter : IBattleResultReporter
+{
+	public bool IsEnd => Data.FreeMatchFinish.data != null;
+
+	public int ClassExp => GetClassExp();
+
+	public List<UserAchievement> UserAchievement => GetUserAchievementList();
+
+	public List<UserMission> UserMission => GetUserMissionList();
+
+	public List<ReceivedReward> MissionRewards => Data.FreeMatchFinish.data._missionRewards;
+
+	public List<ReceivedReward> VictoryRewards => null;
+
+	public LotteryApplyData LotteryData => LotteryApplyData.EmptyData();
+
+	public MyPageHomeDialogData HomeDialogData => null;
+
+	public bool IsDataExist
+	{
+		get
+		{
+			if (Data.FreeMatchFinish.data != null)
+			{
+				return Data.FreeMatchFinish.data.IsProcessed;
+			}
+			return false;
+		}
+	}
+
+	public void Report(bool isWin)
+	{
+	}
+
+	public void Destroy()
+	{
+	}
+
+	public JsonData GetFinishResponseData()
+	{
+		return Data.FreeMatchFinish.data._responseData;
+	}
+
+	public List<UserAchievement> GetUserAchievementList()
+	{
+		return Data.FreeMatchFinish.data.achieved_achievement_list;
+	}
+
+	public List<UserMission> GetUserMissionList()
+	{
+		return Data.FreeMatchFinish.data.achieved_mission_list;
+	}
+
+	public int GetClassExp()
+	{
+		return Data.FreeMatchFinish.data.get_class_chara_experience;
+	}
+}