允许分离流程在忙碌态保存结果

保留 isSeparating 属于 isAiRunning 的全局语义

为内部分离保存增加受控 allowDuringSeparation 选项

apps/ai-game-creator-shell/src/view/ui-editor/useUiEditorPage.ts

@@ -1196,7 +1196,7 @@ export function useUiEditorSession(
       if (separationResult === null)
         throw new Error('自动切分素材没有返回结果');
       const completedResult = separationResult as SeparationDTO;
-      if (!(await save())) {
+      if (!(await save({ allowDuringSeparation: true }))) {
         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。',
         );
@@ -1342,13 +1342,19 @@ export function useUiEditorSession(
     }
   }
 
-  async function save() {
+  async function save(options?: { allowDuringSeparation?: boolean }) {
+    const allowDuringSeparation =
+      options?.allowDuringSeparation === true &&
+      isSeparating &&
+      !isSuggesting &&
+      !isRecognizing &&
+      !isMerging;
     if (
       !resourceId ||
       isSaving ||
       isGenerating ||
       isLoading ||
-      isAiRunning ||
+      (isAiRunning && !allowDuringSeparation) ||
       loadError ||
       persistedRevision === null ||
       editor.isLocked