fix(BT12-Dev): DeathZone 4개 비활성 (보이지 않는 피해 영역 정정)

PD: "전진하다보면 보이지 않는 벽이 있는 것처럼 피해를 입는 지역"

근본 (MCP 자율 실측):
- DeathZone 4개 (Layer 0·BoxCollider2D·isTrigger=True·Platformer.Mechanics.DeathZone)
- DeathZone[2] bounds X 6.95~36.35·Y -12.54~**-2.54** ← Player y=-2 영역 영역
- DeathZone[4] bounds X -16.10~-8.02·Y -24.26~**2.86** ← Player y=-2 영역 영역
- Sample Microgame 떨어짐 영역 영역·Player 새 위치·새 지형 영역 영역 영역 X
- Player Y 영역 → DeathZone trigger → 피해/사망

fix: DeathZone 4개 SetActive(false)

회귀 영역 X:
- Wall LayerMask·Composite·GameObject·InfiniteHorizontalGround 영역 영역 X
- Token·CinemachineConfiner·Victory Trigger 영역 영역 X (영역 영역 영역 영역)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Assets/Scenes/Ingame.unity

@@ -926,7 +926,7 @@ GameObject:
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
   m_StaticEditorFlags: 0
-  m_IsActive: 1
+  m_IsActive: 0
 --- !u!114 &11628177
 MonoBehaviour:
   m_ObjectHideFlags: 0
@@ -17728,7 +17728,7 @@ GameObject:
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
   m_StaticEditorFlags: 0
-  m_IsActive: 1
+  m_IsActive: 0
 --- !u!114 &419576586
 MonoBehaviour:
   m_ObjectHideFlags: 0
@@ -21711,7 +21711,7 @@ Transform:
   m_GameObject: {fileID: 519420028}
   serializedVersion: 2
   m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
-  m_LocalPosition: {x: 0.3035044, y: -0.30000302, z: -9}
+  m_LocalPosition: {x: 0.3035044, y: 0.699997, z: -9}
   m_LocalScale: {x: 1, y: 1, z: 1}
   m_ConstrainProportionsScale: 0
   m_Children: []
@@ -126762,7 +126762,7 @@ PrefabInstance:
       objectReference: {fileID: 0}
     - target: {fileID: 4520396350849616, guid: 7d60c822c3f1b408ea7a00ecdb5e047a, type: 3}
       propertyPath: m_LocalPosition.x
-      value: 0
+      value: -7
       objectReference: {fileID: 0}
     - target: {fileID: 4520396350849616, guid: 7d60c822c3f1b408ea7a00ecdb5e047a, type: 3}
       propertyPath: m_LocalPosition.y
@@ -135958,7 +135958,7 @@ GameObject:
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
   m_StaticEditorFlags: 0
-  m_IsActive: 1
+  m_IsActive: 0
 --- !u!114 &1090666646
 MonoBehaviour:
   m_ObjectHideFlags: 0
@@ -313956,7 +313956,7 @@ Transform:
   m_GameObject: {fileID: 1946717923}
   serializedVersion: 2
   m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
-  m_LocalPosition: {x: 0, y: -0.29999995, z: -9}
+  m_LocalPosition: {x: -7, y: 0.70000005, z: -9}
   m_LocalScale: {x: 1, y: 1, z: 1}
   m_ConstrainProportionsScale: 0
   m_Children: []
@@ -318764,7 +318764,7 @@ GameObject:
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
   m_StaticEditorFlags: 0
-  m_IsActive: 1
+  m_IsActive: 0
 --- !u!114 &2067073109
 MonoBehaviour:
   m_ObjectHideFlags: 0