feat(assets): 文件夹主题 - 新增多主题皮肤并同步主线

web/src/types/canvas.ts

@@ -30,6 +30,7 @@ export type CanvasMediaPerformanceMode = "auto" | "quality" | "performance";
 export type CanvasWorkspaceMode = "simple" | "professional";
 export type CanvasToolMode = "move" | "box-select";
 export type CanvasFolderStyle = "glass" | "stacked" | "midnight" | "paper" | "cinema" | "compact";
+export type CanvasFolderTheme = "aurora" | "obsidian" | "ember" | "pearl";
 export type StoryboardShotDuration = "auto" | "5" | "10" | "15" | "30";
 export type StoryboardShotCount = "auto" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" | "10";
 export type StoryboardVideoInputMode = "direct" | "keyframe";
@@ -286,7 +287,9 @@ export type CanvasNodeMetadata = {
     };
     folder?: {
         style: CanvasFolderStyle;
+        theme?: CanvasFolderTheme;
         createdAt: string;
+        // 自定义主题资源覆盖预置主题；目录内容永远从 childNodes 读取。
         themeCover?: string;
         assetFolderId?: string;
         projectId?: string;