补齐生成中间产物持久化与拆图提示

图标和UI图集拆分失败时保留主图集并在内联、队列及刷新路径提示
角色、图片修改、图标UI和角色动作链路把可恢复中间产物写入项目与素材库
外部生成摘要新增独立告警字段并清理成功任务的历史错误
同步共享契约、SpacetimeDB迁移与绑定、OpenAPI、设计文档和回归测试

src/components/image-editor/ImageCanvasEditorGenerationIntegration.test.tsx

@@ -262,6 +262,7 @@ describe('ImageCanvasEditorView generation integration', () => {
       phaseDetail: overrides.phaseDetail ?? '正在生成角色形象。',
       progress: overrides.progress ?? 40,
       error: overrides.error ?? null,
+      warning: overrides.warning ?? null,
       priceMudPoints: overrides.priceMudPoints ?? 3,
       refundLedgerId: overrides.refundLedgerId ?? null,
       notificationAcknowledgedAt: overrides.notificationAcknowledgedAt ?? null,
@@ -2895,6 +2896,7 @@ describe('ImageCanvasEditorView generation integration', () => {
       status: 'completed',
       progress: 100,
       phaseDetail: '生成已完成。',
+      warning: '连通域数量不足',
       completedAt: '2026-06-21T00:01:00.000Z',
       updatedAt: '2026-06-21T00:01:00.000Z',
       updatedAtMicros: 2,
@@ -2934,6 +2936,9 @@ describe('ImageCanvasEditorView generation integration', () => {
       expect(loadEditorProjectMock).toHaveBeenCalledWith(projectId);
     });
     expect(await screen.findByAltText('画布图片：刷新后生成结果')).toBeTruthy();
+    expect((await screen.findByRole('alert')).textContent).toBe(
+      '图集已生成，但自动拆分未完成：连通域数量不足',
+    );
     await waitFor(() => {
       expect(loadEditorAssetLibraryMock).toHaveBeenCalledTimes(2);
     });