feat(save): 新增梦境演出图与物品图的存档快照

新增 showcase(order 69) 与 playTool(order 70) 两个快照 section，
分别持久化 SpriteShowcase 小图/大图与 PlayToolPanel 物品图/全屏图
的终态，读档时直接还原静止画面。SpriteShowcase 与 PlayToolPanel
补充快照捕获/还原与立即清理逻辑，GameManager 在卸载场景前清理
演出效果。screen 还原顺序顺延至 80。

Assets/Scripts/SaveSystem/Providers/FixSnapshotProvider.cs

@@ -5,7 +5,7 @@ namespace AibisDream.SaveSystem
 {
     /// <summary>
     /// sections["fix"]：Fix 场景宏观模式（FixSceneDirector）。
-    /// RestoreOrder=65，在 timeline(60) 之后、screen(70) 之前。
+    /// RestoreOrder=65，在 timeline(60) 之后、showcase(69) 之前。
     /// </summary>
     public class FixSnapshotProvider : IAsyncSnapshotProvider
     {

Assets/Scripts/SaveSystem/Providers/PlayToolSnapshotProvider.cs

@@ -0,0 +1,36 @@
+using System.Collections;
+using AibisDream.UI;
+
+namespace AibisDream.SaveSystem
+{
+    /// <summary>sections["playTool"]：物品图与全屏图。RestoreOrder=70。</summary>
+    public sealed class PlayToolSnapshotProvider : IAsyncSnapshotProvider
+    {
+        public string SaveId => SnapshotProviderIds.PlayTool;
+        public int RestoreOrder => 70;
+
+        public object Capture()
+        {
+            var panel = UIManager.Instance?.GetPanel<PlayToolPanel>();
+            return panel != null ? panel.CaptureSnapshot() : null;
+        }
+
+        public IEnumerator RestoreAsync(object dto, SnapshotRestoreContext context)
+        {
+            if (dto is not PlayToolSnapshotDto snapshot)
+            {
+                context.Warn("[PlayToolSnapshotProvider] DTO 类型不匹配，跳过还原。");
+                yield break;
+            }
+
+            var panel = UIManager.Instance?.GetPanel<PlayToolPanel>();
+            if (panel == null)
+            {
+                context.Warn("[PlayToolSnapshotProvider] PlayToolPanel 未初始化，跳过还原。");
+                yield break;
+            }
+
+            yield return panel.RestoreSnapshotAsync(snapshot, context.Warn);
+        }
+    }
+}

Assets/Scripts/SaveSystem/Providers/PlayToolSnapshotProvider.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 6c8b98755ccb44089e8ac66b30c02c68

Assets/Scripts/SaveSystem/Providers/ScreenSnapshotProvider.cs

@@ -2,12 +2,12 @@ namespace AibisDream.SaveSystem
 {
     /// <summary>
     /// sections["screen"]：屏幕饱和度与演出淡入淡出遮罩。
-    /// 委托 <see cref="ScreenSnapshotHelper"/>；RestoreOrder=70，通常在表现类最后还原。
+    /// 委托 <see cref="ScreenSnapshotHelper"/>；RestoreOrder=80，在表现类最后还原。
     /// </summary>
     public class ScreenSnapshotProvider : ISyncSnapshotProvider
     {
         public string SaveId => SnapshotProviderIds.Screen;
-        public int RestoreOrder => 70;
+        public int RestoreOrder => 80;
 
         public object Capture()
         {

Assets/Scripts/SaveSystem/Providers/ShowcaseSnapshotProvider.cs

@@ -0,0 +1,36 @@
+using System.Collections;
+
+namespace AibisDream.SaveSystem
+{
+    /// <summary>sections["showcase"]：梦境普通小图或大图。RestoreOrder=69。</summary>
+    public sealed class ShowcaseSnapshotProvider : IAsyncSnapshotProvider
+    {
+        public string SaveId => SnapshotProviderIds.Showcase;
+        public int RestoreOrder => 69;
+
+        public object Capture()
+        {
+            return SpriteShowcase.Instance != null
+                ? SpriteShowcase.Instance.CaptureSnapshot()
+                : null;
+        }
+
+        public IEnumerator RestoreAsync(object dto, SnapshotRestoreContext context)
+        {
+            if (dto is not ShowcaseSnapshotDto snapshot)
+            {
+                context.Warn("[ShowcaseSnapshotProvider] DTO 类型不匹配，跳过还原。");
+                yield break;
+            }
+
+            var showcase = SpriteShowcase.Instance;
+            if (showcase == null)
+            {
+                context.Warn("[ShowcaseSnapshotProvider] SpriteShowcase 未初始化，跳过还原。");
+                yield break;
+            }
+
+            yield return showcase.RestoreSnapshotAsync(snapshot, context.Warn);
+        }
+    }
+}

Assets/Scripts/SaveSystem/Providers/ShowcaseSnapshotProvider.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 83cccdfaca2a42a89ed515c16c6adfad

Assets/Scripts/SaveSystem/README.md

@@ -100,7 +100,9 @@ SaveSystem/
     ├── TimelineSnapshotProvider.cs   order 60
     ├── FixSnapshotProvider.cs        order 65
     ├── FixPanelSnapshotProvider.cs   order 66
-    └── ScreenSnapshotProvider.cs     order 70
+    ├── ShowcaseSnapshotProvider.cs   order 69
+    ├── PlayToolSnapshotProvider.cs   order 70
+    └── ScreenSnapshotProvider.cs     order 80
 ```
 
 ## 存盘 / 读盘流程
@@ -133,7 +135,7 @@ Phase 0  Yarn 变量（sync）
     ↓
 Phase 1  场景加载（Barrier：LoadSceneAsync）← 框架直管，不走 Provider
     ↓
-Phase 2  env / actor / audio / timeline / fix / screen（Provider 按 RestoreOrder）
+Phase 2  env / actor / audio / timeline / fix / showcase / playTool / screen（Provider 按 RestoreOrder）
          └─ timeline：`Stopped` = untouched（从未 Evaluate），读档仅还原 `isActive`，不 Reset/Evaluate
     ↓
 Phase 2′ 可选 Barrier（如 Timeline Addressable 须显式等待）
@@ -200,7 +202,7 @@ Fix 场景各 State 的 `Enter()` 通常包含相机过渡、Timeline 播放、F
 | `bodyModule` | `BodyModuleSnapshotDto` | 67 | 插线模块物理态 |
 | `eye` | `EyeSnapshotDto` | 68 | Eye 叙事阶段 |
 
-**还原顺序**：punchTape → fix（cue）→ fixPanel → bodyModule → eye → screen。`fixPanel` 须在 `fix` 之后，以覆盖 Cue `EnterImmediate` 中的 `ResetPlug`。
+**还原顺序**：punchTape → fix（cue）→ fixPanel → bodyModule → eye → showcase → playTool → screen。`fixPanel` 须在 `fix` 之后，以覆盖 Cue `EnterImmediate` 中的 `ResetPlug`。
 
 **维修场景门控**（`FixSceneSnapshotHelper`）：上述 section 仅在 `FixSystemCenter.Instance != null` 时 Capture/Restore。
 

Assets/Scripts/SaveSystem/SaveSnapshot.cs

@@ -180,6 +180,36 @@ namespace AibisDream.SaveSystem
         public bool isFadeScreenCovered;
     }
 
+    /// <summary>sections["playTool"]：常驻演出 UI 中的物品图与全屏图终态。</summary>
+    [Serializable]
+    public class PlayToolSnapshotDto
+    {
+        public bool isObjVisible;
+        public string objPicName;
+        public bool isFullScreenVisible;
+        public string fullScreenPicName;
+    }
+
+    /// <summary>Showcase 当前持久化的图片类型；不包含风筝及其他瞬时演出。</summary>
+    public enum ShowcaseDisplayMode
+    {
+        None,
+        Small,
+        Large
+    }
+
+    /// <summary>sections["showcase"]：梦境 Showcase 普通小图或大图终态。</summary>
+    [Serializable]
+    public class ShowcaseSnapshotDto
+    {
+        /// <summary><see cref="ShowcaseDisplayMode"/> 枚举名。</summary>
+        public string displayMode;
+        public string picName;
+
+        /// <summary>小图是否由分层资源组成；只恢复静止画面，不恢复运动。</summary>
+        public bool usesSplitLayers;
+    }
+
     /// <summary>sections["subway"]：地铁场景宏观状态（SubwayCenter / OutSideState）。</summary>
     [Serializable]
     public class SubwaySnapshotDto

Assets/Scripts/SaveSystem/SnapshotRegistry.cs

@@ -15,6 +15,8 @@ namespace AibisDream.SaveSystem
         public const string Audio = "audio";
         public const string Timeline = "timeline";
         public const string Screen = "screen";
+        public const string PlayTool = "playTool";
+        public const string Showcase = "showcase";
         public const string Subway = "subway";
         public const string PunchTape = "punchTape";
         public const string Fix = "fix";
@@ -29,7 +31,7 @@ namespace AibisDream.SaveSystem
         /// </summary>
         public static readonly string[] RequiredForCapture =
         {
-            Environment, Actor, Audio, Timeline, Subway, Fix, Screen
+            Environment, Actor, Audio, Timeline, Subway, Fix, Showcase, PlayTool, Screen
         };
     }
 
@@ -59,6 +61,8 @@ namespace AibisDream.SaveSystem
             Register(new FixPanelSnapshotProvider());
             Register(new BodyModuleSnapshotProvider());
             Register(new EyeSnapshotProvider());
+            Register(new ShowcaseSnapshotProvider());
+            Register(new PlayToolSnapshotProvider());
             Register(new ScreenSnapshotProvider());
         }
 

Assets/Scripts/SaveSystem/SnapshotRestore.cs

@@ -257,6 +257,8 @@ namespace AibisDream.SaveSystem
                 SnapshotProviderIds.FixPanel => jobj.ToObject<FixPanelSnapshotDto>(),
                 SnapshotProviderIds.BodyModule => jobj.ToObject<BodyModuleSnapshotDto>(),
                 SnapshotProviderIds.Eye => jobj.ToObject<EyeSnapshotDto>(),
+                SnapshotProviderIds.Showcase => jobj.ToObject<ShowcaseSnapshotDto>(),
+                SnapshotProviderIds.PlayTool => jobj.ToObject<PlayToolSnapshotDto>(),
                 SnapshotProviderIds.Screen => jobj.ToObject<ScreenSnapshotDto>(),
                 _ => jobj
             };