fix: 去掉 Play(manIdle) 避免 Idle 重复触发 + Shoot→Fall 过渡优化 + 场景 maninjury→manInjury

- 不再调用 Play("manIdle")，仅重置参数让 Animator 默认进入 Idle
- Shoot 结束后先设 IsFull=true 再清 IsStart=false，避免过渡时闪回 Idle
- 摔倒后停留从1s增加到2s，确保玩家看清摔倒动作
- GameObject.Find("maninjury") → Find("manInjury") 匹配场景重命名

Assets/Scenes/main.unity

@@ -2735,7 +2735,6 @@ GameObject:
   - component: {fileID: 441640511}
   - component: {fileID: 441640510}
   - component: {fileID: 441640516}
-  - component: {fileID: 441640517}
   m_Layer: 0
   m_Name: '[Managers]'
   m_TagString: GameController
@@ -2967,27 +2966,7 @@ MonoBehaviour:
   _blackScreenImage: {fileID: 0}
   _idleDuration: 2
   _fadeDuration: 1
---- !u!114 &441640517
-MonoBehaviour:
-  m_ObjectHideFlags: 0
-  m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInstance: {fileID: 0}
-  m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 441640509}
-  m_Enabled: 1
-  m_EditorHideFlags: 0
-  m_Script: {fileID: 11500000, guid: 4aaf3f536776e4baa98839960d122cff, type: 3}
-  m_Name: 
-  m_EditorClassIdentifier: 
-  _manAnimator: {fileID: 0}
-  _man2Animator: {fileID: 0}
-  _man2Object: {fileID: 0}
-  _womanObject: {fileID: 0}
-  _manInjuryObject: {fileID: 0}
-  _blackScreenPanel: {fileID: 0}
-  _blackScreenImage: {fileID: 0}
-  _idleDuration: 2
-  _fadeDuration: 1
+  _fallHoldDuration: 1.5
 --- !u!1 &458363765
 GameObject:
   m_ObjectHideFlags: 0
@@ -6814,7 +6793,7 @@ GameObject:
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
   m_StaticEditorFlags: 0
-  m_IsActive: 0
+  m_IsActive: 1
 --- !u!224 &1284093980
 RectTransform:
   m_ObjectHideFlags: 0