fix: Previous/Next走对woman步进 + 开场动画支持重复播放

- PreviousStep/NextStep: woman自由步进优先于Config路径
- UpdateTouchVisibility: 修正索引 i==step (之前错误地用step-1)
- PlayOpeningFlow: 每次调用前重置man/man2/摄像机状态，支持返回重来
- PageController: 移除InitializeFromGameManager调用，不再覆盖woman步进

Assets/Scripts/Animation/OpeningFlowController.cs

@@ -87,6 +87,24 @@ public class OpeningFlowController : MonoBehaviour
     public void PlayOpeningFlow(System.Action onComplete)
     {
         Debug.Log("[OpeningFlow] PlayOpeningFlow() 被调用");
+
+        // 每次播放前重置场景（支持重复播放）
+        if (_manAnimator != null)
+        {
+            _manAnimator.gameObject.SetActive(true);
+            _manAnimator.SetBool("IsStart", false);
+            _manAnimator.SetBool("IsFull", false);
+        }
+        if (_man2Object != null) _man2Object.SetActive(true);
+        if (_womanObject != null) _womanObject.SetActive(false);
+        if (_manInjuryObject != null) _manInjuryObject.SetActive(false);
+        if (_blackScreenPanel != null) _blackScreenPanel.SetActive(false);
+
+        var mainCam = Camera.main;
+        if (mainCam != null) mainCam.enabled = true;
+        var cam2 = GameObject.Find("camera2");
+        if (cam2 != null) { var c = cam2.GetComponent<Camera>(); if (c != null) c.enabled = false; }
+
         StartCoroutine(RunOpeningFlow(onComplete));
     }