fix(timeline-kit): 修复 Timeline 重复播放无法从头开始

Assets/Scripts/SceneManagement/TimelineKit/DirectorHandler.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections;
 using Cinemachine;
 using UnityEngine;
@@ -217,16 +217,14 @@ namespace AibisDream
                 return;
             }
 
-            // 先停止再播放
+            // 先停止、回到起点再播放（保证同一 Timeline 可重复从头播放）
             CancelPendingResetToStartCoroutine();
             director.stopped -= OnDirectorStopped;
-            if (director.state == PlayState.Playing)
-            {
-                director.Stop();
-            }
-                        
+            director.Stop();
+            ApplyPlaybackTimeZero();
+
             _onCompleteCallback = onComplete;
-            
+
             if (ShouldSubscribeStopped(onComplete))
             {
                 director.stopped += OnDirectorStopped;
@@ -235,6 +233,7 @@ namespace AibisDream
             // 自动绑定 CinemachineBrain
             AutoBindCinemachineBrain();
 
+            Debug.Log($"DirectorHandler {timelineName}: Play");
             director.Play();
         }
 
@@ -251,10 +250,8 @@ namespace AibisDream
 
             CancelPendingResetToStartCoroutine();
             director.stopped -= OnDirectorStopped;
-            if (director.state == PlayState.Playing)
-            {
-                director.Stop();
-            }
+            director.Stop();
+            ApplyPlaybackTimeZero();
 
             if (ShouldSubscribeStopped(null))
             {
@@ -264,6 +261,7 @@ namespace AibisDream
             // 自动绑定 CinemachineBrain
             AutoBindCinemachineBrain();
 
+            Debug.Log($"DirectorHandler {timelineName}: Play");
             director.Play();
 
             // 等待播放完成
@@ -329,10 +327,7 @@ namespace AibisDream
 
             CancelPendingResetToStartCoroutine();
             director.stopped -= OnDirectorStopped;
-            if (director.state == PlayState.Playing)
-            {
-                director.Stop();
-            }
+            director.Stop();
 
             _savedPlayableAsset = director.playableAsset;
             director.playableAsset = loadedAsset;
@@ -341,7 +336,9 @@ namespace AibisDream
 
             // 自动绑定 CinemachineBrain（必须在 RebuildGraph 之后）
             AutoBindCinemachineBrain();
-            
+
+            ApplyPlaybackTimeZero();
+
             _addressableHandle = loadedHandle;
 
             _onCompleteCallback = onComplete;