fix: 修复 manIdle 未播放问题 + 添加 camera2 切换

- RunOpeningFlow 开头强制重置 Animator: SetBool(false) + Play("manIdle")
- Step2 前确保 IsFull=false（适配 Idle→Shoot 过渡条件）
- 黑屏转场后调用 SwitchToCamera2()，启用 camera2、禁用主摄像机
- 所有关键步骤增加详细 Debug.Log

Assets/Animations/man.controller

@@ -62,10 +62,7 @@ AnimatorStateTransition:
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
   m_Name: 
-  m_Conditions:
-  - m_ConditionMode: 1
-    m_ConditionEvent: IsFull
-    m_EventTreshold: 0
+  m_Conditions: []
   m_DstStateMachine: {fileID: 0}
   m_DstState: {fileID: -769426376306875324}
   m_Solo: 0
@@ -121,12 +118,6 @@ AnimatorController:
     m_DefaultInt: 0
     m_DefaultBool: 0
     m_Controller: {fileID: 9100000}
-  - m_Name: IsStart
-    m_Type: 4
-    m_DefaultFloat: 0
-    m_DefaultInt: 0
-    m_DefaultBool: 0
-    m_Controller: {fileID: 9100000}
   m_AnimatorLayers:
   - serializedVersion: 5
     m_Name: Base Layer
@@ -147,7 +138,10 @@ AnimatorStateTransition:
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
   m_Name: 
-  m_Conditions: []
+  m_Conditions:
+  - m_ConditionMode: 1
+    m_ConditionEvent: IsFull
+    m_EventTreshold: 0
   m_DstStateMachine: {fileID: 0}
   m_DstState: {fileID: -6540800505175465208}
   m_Solo: 0