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/Cute/DebugManager.cs

@@ -0,0 +1,102 @@
+using System;
+using System.Diagnostics;
+using UnityEngine;
+
+namespace Cute;
+
+public class DebugManager : MonoBehaviour
+{
+	public enum LOG_LEVEL
+	{
+		NORMAL,
+		HIGH,
+		VERY_HIGH,
+		VERY_HIGH2,
+		VERY_HIGH3,
+		VERY_HIGH4
+	}
+
+	[Conditional("USE_DBGSYS")]
+	public void Log(string text)
+	{
+	}
+
+	[Conditional("USE_DBGSYS")]
+	public void LogWarning(string text)
+	{
+	}
+
+	[Conditional("USE_DBGSYS")]
+	public void LogAppend(string text)
+	{
+	}
+
+	[Conditional("USE_DBGSYS")]
+	public void LogAppendWarning(string text)
+	{
+	}
+
+	public void ClearLog()
+	{
+	}
+
+	[Conditional("USE_DBGSYS")]
+	public void TextLog(string text)
+	{
+	}
+
+	[Conditional("USE_DBGSYS")]
+	public void SoundLog(string text)
+	{
+	}
+
+	[Conditional("USE_DBGSYS")]
+	public void SoundLogWarning(string text)
+	{
+	}
+
+	[Conditional("USE_DBGSYS")]
+	public void SoundLogAppend(string text)
+	{
+	}
+
+	[Conditional("USE_DBGSYS")]
+	public void SoundLogAppendWarning(string text)
+	{
+	}
+
+	[Conditional("USE_DBGSYS")]
+	public void ClearSoundLog()
+	{
+	}
+
+	[Conditional("USE_DBGSYS")]
+	public void BattleLogAppend(string text)
+	{
+	}
+
+	[Conditional("USE_DBGSYS")]
+	public void BattleLogAppendWarning(string text)
+	{
+	}
+
+	[Conditional("USE_DBGSYS")]
+	public void ClearBattleLog()
+	{
+	}
+
+	[Conditional("USE_DBGSYS")]
+	public void Log(object log, LOG_LEVEL level)
+	{
+	}
+
+	[Conditional("USE_DBGSYS")]
+	public void LogError(object log)
+	{
+	}
+
+	[Conditional("USE_DBGSYS")]
+	public void LogException(Exception e)
+	{
+	}
+}