fix: touchArray球体改为黑场后才出现，与medicalBox同步

- 所有touchArray子级初始隐藏
- ActivateExperimentObjects()中同步激活point1

Assets/Scripts/UI/PageController.cs

@@ -339,7 +339,7 @@ public class PageController : MonoBehaviour
     {
         Debug.Log("PageController: [ActivateExperimentObjects] 显示实验物件");
 
-        // 用 includeInactive 搜索，避免 medicalBox inactive 时 Find 返回 null
+        // medicalBox
         var allObjects = FindObjectsOfType<GameObject>(true);
         foreach (var go in allObjects)
         {
@@ -347,10 +347,18 @@ public class PageController : MonoBehaviour
             {
                 go.SetActive(true);
                 Debug.Log("PageController: medicalBox 已显示");
-                return;
+                break;
             }
         }
-        Debug.LogWarning("PageController: 未找到 medicalBox");
+
+        // touchArray 的第一个球（point1）
+        var touch = GameObject.Find("touchArray");
+        if (touch != null && touch.transform.childCount > 0)
+        {
+            var point1 = touch.transform.GetChild(0).gameObject;
+            point1.SetActive(true);
+            Debug.Log("PageController: touchArray/point1 已显示");
+        }
     }