严格区分Seedance视频模型

将画板生成视频默认模型调整为 seedance2.0-fast

为 seedance2.0 与 seedance2.0-fast 分别映射独立上游模型

固定角色动画使用 seedance2.0-fast 并更新前后端契约测试

同步更新编辑器生成面板和项目记忆文档

src/services/image-editor/editorProjectClient.ts

@@ -164,7 +164,7 @@ export type EditorCharacterAnimationGenerationInput = {
   frameCount: EditorCharacterAnimationFrameCount;
   durationSeconds: EditorCharacterAnimationDurationSeconds;
   priceMudPoints: number;
-  model: 'seedance2.0';
+  model: 'seedance2.0-fast';
 };
 
 export type EditorCharacterAnimationFrameResult = {
@@ -176,7 +176,7 @@ export type EditorCharacterAnimationFrameResult = {
 
 export type EditorCharacterAnimationGenerationResult = {
   taskId: string;
-  model: 'seedance2.0';
+  model: 'seedance2.0-fast';
   prompt: string;
   previewVideoPath: string;
   frames: EditorCharacterAnimationFrameResult[];