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/MyPageCharaMenu.cs

@@ -18,353 +18,8 @@ public class MyPageCharaMenu : MonoBehaviour
 		}
 	}
 
-	private readonly Vector3 RIGHT_BASE_NO_CUSTOM_BG_POSITION = new Vector3(505f, 0f, -50f);
-
 	[SerializeField]
 	private UIButton sinkaButton;
 
-	[SerializeField]
-	private UILabel labelSinkaButton;
-
-	[SerializeField]
-	private UITexture originalTex;
-
-	[SerializeField]
-	private GameObject texBase;
-
-	private UITexture[] caharaTex;
-
-	[SerializeField]
-	private GameObject _rightBase;
-
-	private Vector3 _rightBaseDefaultPosition;
-
-	private bool _isFirstCallOnEnable = true;
-
-	[SerializeField]
-	private MyPageCenterCard cardManager;
-
-	[SerializeField]
-	private GameObject CardMainObj;
-
-	[SerializeField]
-	private UIScrollView scroll;
-
-	[SerializeField]
-	private GameObject scrollColliderObj;
-
-	[SerializeField]
-	private UICenterOnChild scrollCenterOnChild;
-
-	private const float SCROLL_X_SIZE = 100f;
-
-	private float _beforeCircleAngle;
-
-	[SerializeField]
-	private float InitialSpeed = 22f;
-
-	[SerializeField]
-	private float DecelerationBase = 3.5f;
-
-	[SerializeField]
-	private float DecelerationAdd = 10f;
-
-	[SerializeField]
-	private float DragSpeed = 2.1f;
-
-	[SerializeField]
-	private float DragSpeed2 = 0.1f;
-
-	private bool _isClockwise;
-
-	private float _currentSpeed;
-
-	private float _currentDeceleration;
-
-	private bool _isOnEnable;
-
-	private IList<DragInfo> _dragInfoList;
-
-	private int _currentIndex;
-
-	private int _oldIndex = -1;
-
-	private float _soundTimer;
-
-	private bool _isFirstUpdate = true;
-
-	private const string LABEL_BUTTON_EVO_TEXT = "Card_0030";
-
-	private const string LABEL_BUTTON_RETURN_TEXT = "Card_0067";
-
-	public bool IsForceActive { get; set; }
-
 	public UIButton EvolutionButton => sinkaButton;
-
-	private void Start()
-	{
-		caharaTex = new UITexture[40];
-		for (int i = 0; i < 40; i++)
-		{
-			caharaTex[i] = UnityEngine.Object.Instantiate(originalTex);
-			caharaTex[i].transform.parent = texBase.transform;
-			caharaTex[i].transform.localScale = new Vector3(0.35f, 0.35f, 1f);
-			caharaTex[i].transform.transform.localPosition = new Vector3((float)i * 100f, 0f, 0f);
-			caharaTex[i].gameObject.name = i.ToString();
-		}
-		originalTex.gameObject.SetActive(value: false);
-		LoadCenterCardIndex();
-		sinkaButton.onClick.Clear();
-		sinkaButton.onClick.Add(new EventDelegate(delegate
-		{
-			if (!cardManager.CardDetail.IsCardObjRotateTween)
-			{
-				cardManager.ChangeEvoDisplay(_currentIndex);
-				cardManager.PlayCardRotationAnime(_currentIndex, cardManager.IsAfterEvolution(_currentIndex));
-				GameMgr.GetIns().GetSoundMgr().PlaySe(Se.TYPE.SYS_MYPAGE_EVOLVE);
-				GameMgr.GetIns().GetEffectMgr().Stop(EffectMgr.EffectType.CMN_MYPAGE_EVO_1);
-				GameMgr.GetIns().GetEffectMgr().Start(EffectMgr.EffectType.CMN_MYPAGE_EVO_1, new Vector3(0f, 0.3f, 0f));
-				ChangeStateSinkaButton(_currentIndex);
-			}
-		}));
-		ChangeStateSinkaButton(_currentIndex);
-		if (_dragInfoList == null)
-		{
-			_dragInfoList = new List<DragInfo>();
-		}
-		UIEventListener uIEventListener = UIEventListener.Get(scrollColliderObj);
-		uIEventListener.onClick = (UIEventListener.VoidDelegate)Delegate.Combine(uIEventListener.onClick, (UIEventListener.VoidDelegate)delegate
-		{
-			_currentSpeed = 0f;
-		});
-		UIEventListener uIEventListener2 = UIEventListener.Get(scrollColliderObj);
-		uIEventListener2.onDragStart = (UIEventListener.VoidDelegate)Delegate.Combine(uIEventListener2.onDragStart, (UIEventListener.VoidDelegate)delegate
-		{
-			_dragInfoList.Clear();
-			_dragInfoList.Add(new DragInfo(Time.time, GetLastTouchPos().x));
-		});
-		UIEventListener uIEventListener3 = UIEventListener.Get(scrollColliderObj);
-		uIEventListener3.onDrag = (UIEventListener.VectorDelegate)Delegate.Combine(uIEventListener3.onDrag, (UIEventListener.VectorDelegate)delegate(GameObject g, Vector2 delta)
-		{
-			if (_isClockwise == delta.x < 0f)
-			{
-				_dragInfoList.Add(new DragInfo(Time.time, GetLastTouchPos().x));
-			}
-			else
-			{
-				_currentSpeed = 0f;
-				_isClockwise = !_isClockwise;
-				_dragInfoList.Clear();
-				_dragInfoList.Add(new DragInfo(Time.time, GetLastTouchPos().x));
-			}
-		});
-		UIEventListener uIEventListener4 = UIEventListener.Get(scrollColliderObj);
-		uIEventListener4.onDragEnd = (UIEventListener.VoidDelegate)Delegate.Combine(uIEventListener4.onDragEnd, (UIEventListener.VoidDelegate)delegate
-		{
-			_dragInfoList.Add(new DragInfo(Time.time, GetLastTouchPos().x));
-			int num = _dragInfoList.Count - 1;
-			_currentSpeed = 0f;
-			float num2 = Mathf.Abs(_dragInfoList[num].time - _dragInfoList[0].time);
-			if (!(num2 <= float.Epsilon))
-			{
-				float num3 = Mathf.Abs(_dragInfoList[num].posX - _dragInfoList[0].posX);
-				if (!(num3 <= float.Epsilon))
-				{
-					float num4 = num3 / num2;
-					if (!(num4 < DragSpeed))
-					{
-						int num5 = 2;
-						if (num >= num5)
-						{
-							num2 = Mathf.Abs(_dragInfoList[num].time - _dragInfoList[num - num5].time);
-							if (num2 <= float.Epsilon)
-							{
-								return;
-							}
-							num3 = Mathf.Abs(_dragInfoList[num].posX - _dragInfoList[num - num5].posX);
-							if (num3 <= float.Epsilon)
-							{
-								return;
-							}
-							num4 = num3 / num2;
-							if (num4 < DragSpeed2)
-							{
-								return;
-							}
-						}
-						_currentSpeed = InitialSpeed * num4 * 0.1f;
-						_currentDeceleration = DecelerationBase;
-					}
-				}
-			}
-		});
-	}
-
-	private bool IsAbleUpdate()
-	{
-		if (!UIManager.GetInstance().getUIBase_CardManager().getCreateEndFlag())
-		{
-			return false;
-		}
-		if (!MyPageMenu.Instance.IsCardLoadFinish)
-		{
-			return false;
-		}
-		if (!cardManager.canMyPageCardMove())
-		{
-			return false;
-		}
-		return true;
-	}
-
-	private void Update()
-	{
-		if (!IsAbleUpdate())
-		{
-			return;
-		}
-		if (_isFirstUpdate)
-		{
-			_isFirstUpdate = false;
-			ScrollCenterOn(_currentIndex, 100f);
-			return;
-		}
-		if (_soundTimer > 0f)
-		{
-			_soundTimer -= Time.deltaTime;
-		}
-		if (_isOnEnable)
-		{
-			_isOnEnable = false;
-			ChangeStateSinkaButton(_currentIndex);
-		}
-		Vector3 localPosition = scroll.gameObject.transform.localPosition;
-		float num = -4000f;
-		float num2 = num / 360f;
-		float num3 = localPosition.x / num2;
-		float num4;
-		for (num4 = localPosition.x - 50f; num4 >= 0f; num4 += num)
-		{
-		}
-		while (num4 < num)
-		{
-			num4 -= num;
-		}
-		int num5 = (int)Mathf.Abs(num4 / 100f);
-		if (_oldIndex != num5)
-		{
-			if (!UIManager.GetInstance().isFading() && _soundTimer <= 0f)
-			{
-				GameMgr.GetIns().GetSoundMgr().PlaySe(Se.TYPE.SYS_CARD_SCROLL);
-				_soundTimer = 0.1f;
-			}
-			_currentIndex = num5;
-			_oldIndex = _currentIndex;
-			cardManager.UpdateSelectCard();
-			ChangeStateSinkaButton(_currentIndex);
-			GameMgr.GetIns().GetEffectMgr().Stop(EffectMgr.EffectType.CMN_MYPAGE_EVO_1);
-		}
-		if (_beforeCircleAngle != num3)
-		{
-			_beforeCircleAngle = num3;
-			CardMainObj.transform.eulerAngles = new Vector3(0f, num3, 0f);
-			cardManager.SetCardTransform();
-		}
-		if (_currentSpeed > 0f)
-		{
-			float deltaTime = Time.deltaTime;
-			_currentDeceleration += DecelerationAdd * deltaTime;
-			_currentSpeed -= _currentDeceleration * deltaTime;
-			if (_currentSpeed > 0f)
-			{
-				float num6 = _currentSpeed * deltaTime * (_isClockwise ? 1f : (-1f));
-				num6 /= 10f;
-				scroll.Scroll(num6);
-			}
-			else
-			{
-				ScrollCenterOn(num5, 1f);
-			}
-		}
-	}
-
-	private void ChangeStateSinkaButton(int index)
-	{
-		if (!cardManager.isEvo(index))
-		{
-			sinkaButton.gameObject.SetActive(value: false);
-			return;
-		}
-		sinkaButton.gameObject.SetActive(value: true);
-		if (cardManager.IsAfterEvolution(index))
-		{
-			labelSinkaButton.text = Data.SystemText.Get("Card_0067");
-		}
-		else
-		{
-			labelSinkaButton.text = Data.SystemText.Get("Card_0030");
-		}
-	}
-
-	private void OnEnable()
-	{
-		if (_isFirstCallOnEnable)
-		{
-			_isFirstCallOnEnable = false;
-			_rightBaseDefaultPosition = _rightBase.transform.localPosition;
-		}
-		if (Data.Load.data.AcquiredMyPageBGList.Count == 0)
-		{
-			_rightBase.transform.localPosition = RIGHT_BASE_NO_CUSTOM_BG_POSITION;
-		}
-		else
-		{
-			_rightBase.transform.localPosition = _rightBaseDefaultPosition;
-		}
-		_currentSpeed = 0f;
-		_isOnEnable = true;
-		cardManager.CardDetail.ResetAngleCardObj();
-		scrollColliderObj.SetActive(!IsForceActive);
-	}
-
-	private void OnDisable()
-	{
-		if (!(cardManager.CardDetail.CardDetailWindow == null))
-		{
-			cardManager.CardDetail.CardDetailWindow.HideDetail();
-		}
-	}
-
-	private void LoadCenterCardIndex()
-	{
-		_currentIndex = PlayerPrefsWrapper.GetValue(PlayerPrefsWrapper.HOME_CENTER_CARD_INDEX);
-	}
-
-	public void SaveCenterCardIndex()
-	{
-		PlayerPrefsWrapper.SetValue(PlayerPrefsWrapper.HOME_CENTER_CARD_INDEX, _currentIndex);
-	}
-
-	public int getNowSelIndex()
-	{
-		return _currentIndex;
-	}
-
-	private Vector2 GetLastTouchPos()
-	{
-		return UICamera.currentCamera.ScreenToWorldPoint(UICamera.lastEventPosition);
-	}
-
-	private void ScrollCenterOn(int index)
-	{
-		scrollCenterOnChild.CenterOn(caharaTex[index].transform);
-	}
-
-	private void ScrollCenterOn(int index, float springStrength)
-	{
-		float springStrength2 = scrollCenterOnChild.springStrength;
-		scrollCenterOnChild.springStrength = springStrength;
-		scrollCenterOnChild.CenterOn(caharaTex[index].transform);
-		scrollCenterOnChild.springStrength = springStrength2;
-	}
 }