feat(canvas): 添加视频节点支持功能

- 在后端添加 AI 视频相关接口处理函数
- 扩展前端画布组件支持视频节点类型
- 实现视频上传、生成和播放功能
- 更新画布数据结构文档以包含视频节点
- 添加视频节点的操作工具栏和配置面板
- 集成视频存储和检索服务
- 优化视频节点的渲染和交互体验

web/src/app/(user)/canvas/constants.ts

@@ -12,6 +12,7 @@ export const NODE_DEFAULT_SIZE = {
     [CanvasNodeType.Image]: { width: 340, height: 240, title: "New Generation" },
     [CanvasNodeType.Text]: { width: 340, height: 240, title: "Note" },
     [CanvasNodeType.Config]: { width: 340, height: 240, title: "生成配置" },
+    [CanvasNodeType.Video]: { width: 420, height: 236, title: "Video" },
 } satisfies Record<CanvasNodeType, { width: number; height: number; title: string }>;
 
 export const NODE_SPECS = {
@@ -27,6 +28,10 @@ export const NODE_SPECS = {
         ...NODE_DEFAULT_SIZE[CanvasNodeType.Config],
         metadata: { content: "", status: "idle", generationMode: "image" },
     },
+    [CanvasNodeType.Video]: {
+        ...NODE_DEFAULT_SIZE[CanvasNodeType.Video],
+        metadata: { content: "", status: "idle" },
+    },
 } satisfies Record<CanvasNodeType, CanvasNodeSpec>;
 
 export function getNodeSpec(type: CanvasNodeType) {