diff --git a/apps/ai-game-creator-shell/src/view/ui-editor/useUiEditorPage.ts b/apps/ai-game-creator-shell/src/view/ui-editor/useUiEditorPage.ts
index 561c237c9..6f262cabe 100644
--- a/apps/ai-game-creator-shell/src/view/ui-editor/useUiEditorPage.ts
+++ b/apps/ai-game-creator-shell/src/view/ui-editor/useUiEditorPage.ts
@@ -1190,7 +1190,7 @@ export function useUiEditorSession(
       }));
       if (separationResult === null)
         throw new Error('自动切分素材没有返回结果');
-      const completedResult = separationResult;
+      const completedResult = separationResult as SeparationDTO;
       if (!(await save())) {
         throw new Error(
           '自动切分素材结果已写入编辑器，但 State 保存失败；sidecar 已保留，可继续恢复。',