feat(dialog): 拆分 Yarn 变量存储为独立单例

Assets/Scripts/MiniGame/BlockPuzzle/Class/BlockPuzzleSystem.cs

@@ -123,7 +123,7 @@ namespace AibisDream
 
             var validateResult = validator.Validate(grid.GetShapes());
             var shapesInGrid = grid.GetShapes().Select(s => s.BlockShapeData.blockShapeInfo.shapeName).ToArray();
-            StorageSystem.Instance.SetValue("$shapesInGrid", string.Join(",", shapesInGrid));
+            YarnVariableStorage.Instance.SetValue("$shapesInGrid", string.Join(",", shapesInGrid));
 
             // 如果验证通过, 则设置变量并弹出对话
             if (validateResult.isPass)
@@ -236,7 +236,7 @@ namespace AibisDream
             // 点击形状
             blockPuzzlePanel.ShowShapeInScreen(blockShape.BlockShapeData.blockShapeInfo);
             // 播放事件节点
-            StorageSystem.Instance.SetValue("$selectedShape", blockShape.BlockShapeData.blockShapeInfo.shapeName);
+            YarnVariableStorage.Instance.SetValue("$selectedShape", blockShape.BlockShapeData.blockShapeInfo.shapeName);
             SingleCastEventSystem.Global.Trigger(DialogEventEnum.StartNode, "ShapeSelected");
         }