engine cleanup passes 4-7 + multi-instancing ambient rip

Squashes 146 commits from battle-engine-extraction. Net: 2,045 files changed,
+11,896 / -158,687 lines. Ships engine passes 4-7 (dead-code cull, view-layer
stub, receive-path shrink) plus the Phase-5 AsyncLocal ambient deletion that
turns concurrent battles into a type-system property rather than a scope
contract.

## What landed

**Passes 4-7 (chunks 1-34):** Extended the Phase-4 const-false collapse into a
cascading cull across the skill graph, view layer, and receive-path periphery.
Six mode flags (IsWatchBattle/IsReplayBattle/IsAdmin/IsAdminWatch/IsPuzzleQuest/
IsAINetwork) became `const false`, every guarded block deleted. Field*.cs
subclass ctors + BackGroundBase + ObjectChecker culled to no-ops. Mulligan
family reworked to take a mgr param through IMulliganMgr.InitMulligan.
Emotion/Recovery/Resource clusters null-stubbed. Prediction/OperationSimulator/
skill filters converted from static ambient reads to per-mgr reads via
SkillPrm.ownerCard.SelfBattlePlayer.BattleMgr / ins.BattleMgr / this.BattleMgr.

**Phase-5 ambient rip (chunks 35-47):** Deleted BattleAmbient / BattleAmbient-
Context / TestBattleScope in full. Every per-battle mutable slot now lives on
the mgr instance itself:
  mgr.InstanceIsForecast / InstanceIsRandomDraw / InstanceRecoveryInfo /
  InstanceViewerId / InstanceNetworkAgent / GameMgr
BattleManagerBase.GetIns() returns null unconditionally; the residual static
flags + 3 façades (Certification.ViewerId, Data.BattleRecoveryInfo,
ToolboxGame.RealTimeNetworkAgent) are null-tolerant defaults kept for the
handful of engine-internal readers that still reference their types. Zero
BattleAmbient references anywhere in engine + node + tests.

Added pre-seeded GameMgr ctor overload threaded through the mgr chain
(BattleManagerBase → SingleBattleMgr / NetworkBattleManagerBase → NetworkStandard-
BattleMgr → HeadlessBattleMgr / HeadlessNetworkBattleMgr). Fixtures build a
GameMgr, seed it via HeadlessEngineEnv.SeedCharaIds/SeedNetUser, and pass it
to the mgr's ctor — no ambient reach.

Node side (SVSim.BattleNode/SessionBattleEngine): _ctx replaced with a plain
GameMgr field; 34 `using var _ambient = BattleAmbient.Enter(_ctx)` scope wraps
ripped from every accessor and mutator; EngineGlobalInit.WirePerSessionGameMgr
takes GameMgr as a param and runs from SessionBattleEngine.SetupInternal
BEFORE mgr construction.

Test side: TestBattleScope deleted; 18 fixture [SetUp]s migrated to
`HeadlessEngineEnv.EnsureProcessGlobals()`; MultiInstanceEngineTests rewritten
around per-mgr construction (GetIns() → null is the pinned invariant).

## Regression fixes

- **chunk-48** (MulliganCtrl): chunk-35's `= null` stubs on card lookups broke
  the live receive-driven Deal path (BattlePlayerBase.DrawCard NRE'd downstream
  of NetworkPlayerMulliganCtrl.StartMulliganVfx). Restored the three lookups
  via `_battlePlayer.BattleMgr.GetBattleCardIdx`. Engine tests were satisfied
  by the WireMulliganPhase seam; unit tests exposed the live-path gap.

## Ship state

- SVSim.BattleEngine.Tests: 56/56 pass, 2 skip
- SVSim.UnitTests: 1554/1554 pass (was 1523/31-fail before chunk 48)
- Solution build: 0 source warnings (40 pre-existing NU1902 MessagePack CVEs
  in SVSim.EmulatedEntrypoint, unrelated)
- Sequential PVP smoke: verified live (two back-to-back battles, no regression
  on cleanup/spinup)
- Concurrent PVP smoke: verified live

Adds tools/engine-port/ClosureAnalyzer/ — the Roslyn transitive-type-closure
analyzer needed to make future cascade cleanup safe (per feedback memory
"Engine cleanup needs closure tool" from the 2026-06-28 pass-3 failure).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

SVSim.BattleEngine/Engine/Cute/NetworkManager.cs

@@ -19,8 +19,6 @@ public class NetworkManager : MonoBehaviour, IManager
 {
 	public const float TimeOut = 30f;
 
-	public const float TimeOutShort = 2f;
-
 	protected NetworkTask lastRequestTask;
 
 	public bool isConnect;
@@ -37,24 +35,6 @@ public class NetworkManager : MonoBehaviour, IManager
 
 	private IEnumerator connectCoroutine;
 
-	[SerializeField]
-	public Certification _certification;
-
-	public INetworkUI NetworkUI { get; set; }
-
-	private void Start()
-	{
-		Toolbox.NetworkManager = this;
-	}
-
-	public bool IsReachability()
-	{
-		if (Application.internetReachability != NetworkReachability.NotReachable)
-		{
-			return true;
-		}
-		return false;
-	}
 
 	public IEnumerator Connect(NetworkTask task, Action<NetworkTask.ResultCode> callbackOnSuccess = null, Action<NetworkTask.ResultCode> callbackOnFailure = null, Action<int> callbackOnResultCodeError = null, bool encrypt = true, bool useJson = false, bool showLoadingIcon = true, bool showErrorDialog = true)
 	{
@@ -92,10 +72,6 @@ public class NetworkManager : MonoBehaviour, IManager
 		isConnect = true;
 		isTimeOut = false;
 		isError = false;
-		if (NetworkUI != null && _showLoadingIcon)
-		{
-			NetworkUI.StartLoading();
-		}
 		bool isLogTraceCheckUri = false;
 		if (lastRequestTask is DoMatchingBase || lastRequestTask is FinishTaskBase)
 		{
@@ -126,10 +102,6 @@ public class NetworkManager : MonoBehaviour, IManager
 		{
 			LogTraceCheck("3");
 		}
-		if (NetworkUI != null)
-		{
-			NetworkUI.StopLoading();
-		}
 		if (!unityWebRequest.isDone)
 		{
 			isTimeOut = true;
@@ -139,23 +111,16 @@ public class NetworkManager : MonoBehaviour, IManager
 			{
 				if (lastRequestTask.GetType().Equals(typeof(PackOpenTask)) || lastRequestTask.GetType().Equals(typeof(BuildDeckBuyTask)) || lastRequestTask.GetType().Equals(typeof(SleeveBuyTask)) || lastRequestTask.GetType().Equals(typeof(SkinBuyMultiRewardTask)) || lastRequestTask.GetType().Equals(typeof(SkinBuyMultiTask)) || lastRequestTask.GetType().Equals(typeof(SkinBuySingleTask)) || lastRequestTask.GetType().Equals(typeof(ItemPurchaseBuyTask)) || lastRequestTask.GetType().Equals(typeof(SpotCardExchangeTask)) || lastRequestTask.GetType().Equals(typeof(CardCreateTask)) || lastRequestTask.GetType().Equals(typeof(CardDestructTask)) || lastRequestTask.GetType().Equals(typeof(StoryFinishTask)) || lastRequestTask.GetType().Equals(typeof(PracticeFinishTask)) || lastRequestTask.GetType().Equals(typeof(BingoDrawTask)) || lastRequestTask.GetType().Equals(typeof(MypageTreasureBoxCpOpenTask)) || lastRequestTask.GetType().Equals(typeof(MypageReceiveSpecialTreasureTask)) || lastRequestTask.GetType().Equals(typeof(FreeCardPackCampaignFinishTask)))
 				{
-					NetworkUI.OpenGoToTitleErrorPopUp(Data.SystemText.Get("ErrorHeader_0012"), Data.SystemText.Get("Error_0012"), "");
+
 				}
 				else
 				{
-					NetworkUI.OpenTimeOutErrorPopUp();
+
 				}
 			}
 			if (lastRequestTask.CallbackOnFailure != null)
 			{
-				if (lastRequestTask.GetType().Equals(typeof(PaymentPCFinishTask)))
-				{
-					NetworkUI.OpenGoToTitleErrorPopUp(Data.SystemText.Get("ErrorHeader_0012"), Data.SystemText.Get("Error_0012"), "");
-				}
-				else
-				{
-					lastRequestTask.CallbackOnFailure(NetworkTask.ResultCode.TimeOut);
-				}
+				lastRequestTask.CallbackOnFailure(NetworkTask.ResultCode.TimeOut);
 			}
 			Toolbox.DeviceManager.ClearIpAddress();
 		}
@@ -165,13 +130,13 @@ public class NetworkManager : MonoBehaviour, IManager
 			isError = true;
 			if (showErrorDialog && !lastRequestTask.isSkipCommonHttpStatusErrorPopUp())
 			{
-				if (lastRequestTask.GetType().Equals(typeof(PackOpenTask)) || lastRequestTask.GetType().Equals(typeof(PaymentPCFinishTask)))
+				if (lastRequestTask.GetType().Equals(typeof(PackOpenTask)))
 				{
-					NetworkUI.OpenGoToTitleErrorPopUp(Data.SystemText.Get("ErrorHeader_0012"), Data.SystemText.Get("Error_0012"), "");
+
 				}
 				else
 				{
-					NetworkUI.OpenHttpStatusErrorPopUp();
+
 				}
 			}
 			disposeUnityWebRequest(unityWebRequest);
@@ -274,7 +239,7 @@ public class NetworkManager : MonoBehaviour, IManager
 
 	private bool IsBattle()
 	{
-		if (ToolboxGame.RealTimeNetworkAgent != null && BattleManagerBase.GetIns() != null && BattleManagerBase.GetIns().GetCurrentPhase() is MainPhase)
+		if (false /* Pre-Phase-5b: RTA + MainPhase gate headless-false */)
 		{
 			return true;
 		}
@@ -314,7 +279,7 @@ public class NetworkManager : MonoBehaviour, IManager
 
 	public void ClearLastRequestTask()
 	{
-		if ((NetworkUI != null && !NetworkUI.IsKeepLastRequest()) || lastRequestTask.isServerResultCodeOK())
+		if (lastRequestTask.isServerResultCodeOK())
 		{
 			if (IsBattle())
 			{
@@ -328,7 +293,7 @@ public class NetworkManager : MonoBehaviour, IManager
 	{
 		if (lastRequestTask == null)
 		{
-			NetworkUI.OpenRetryFailErrorPopup();
+
 			yield break;
 		}
 		if (connectCoroutine != null)
@@ -339,43 +304,12 @@ public class NetworkManager : MonoBehaviour, IManager
 		yield return StartCoroutine(connectCoroutine);
 	}
 
-	public void Certification()
-	{
-		_certification.GenerateUdid();
-	}
-
-	public void ReturnToTitle()
-	{
-		NetworkUI.SetKeepLastRequest(flag: false);
-		ClearLastRequestTask();
-		NetworkUI.SoftwareRest();
-	}
-
-	public void GoToMypage()
-	{
-		NetworkUI.SetKeepLastRequest(flag: false);
-		ClearLastRequestTask();
-		NetworkUI.GoToMypage();
-	}
-
 	public void GoToStore()
 	{
 		lastRequestTask.GotoStore();
-		NetworkUI.SetKeepLastRequest(flag: false);
-		ClearLastRequestTask();
-		NetworkUI.SoftwareRest();
-	}
 
-	public void QuitApplication()
-	{
-		NetworkUI.SetKeepLastRequest(flag: false);
 		ClearLastRequestTask();
-		if (Toolbox.mute != null)
-		{
-			Toolbox.mute.Close();
-			Toolbox.mute = null;
-		}
-		Application.Quit();
+
 	}
 
 	private void disposeUnityWebRequest(UnityWebRequest unityWebRequest)
@@ -395,12 +329,4 @@ public class NetworkManager : MonoBehaviour, IManager
 			isConnect = false;
 		}
 	}
-
-	private void OnDestroy()
-	{
-		if (RealTimeNetworkAgent.IsNormalNetworkBattle())
-		{
-			LocalLog.AccumulateLastTraceLog("NetworkManager_Destroy");
-		}
-	}
 }