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/NetworkStatus.cs

@@ -0,0 +1,63 @@
+using System;
+using Cute;
+
+public class NetworkStatus : IDisposable
+{
+	public enum Status
+	{
+		None,
+		Alive,
+		Disconnect,
+		OffLine,
+		TimeOut
+	}
+
+	public Action OnAlive;
+
+	public Action OnDisconnect;
+
+	public Action OnOffLine;
+
+	public Action OnTimeOut;
+
+	public Status Current { get; private set; }
+
+	public bool IsAlive => Current == Status.Alive;
+
+	public NetworkStatus()
+	{
+		Current = Status.None;
+	}
+
+	public void ToKeepAlive()
+	{
+		OnAlive.Call();
+		Current = Status.Alive;
+	}
+
+	public void ToDisconnect()
+	{
+		OnDisconnect.Call();
+		Current = Status.Disconnect;
+	}
+
+	public void ToOffLine()
+	{
+		OnOffLine.Call();
+		Current = Status.OffLine;
+	}
+
+	public void ToTimeOut()
+	{
+		OnTimeOut.Call();
+		Current = Status.TimeOut;
+	}
+
+	public void Dispose()
+	{
+		OnAlive = null;
+		OnDisconnect = null;
+		OnOffLine = null;
+		OnTimeOut = null;
+	}
+}