完善客户端模块与工作区能力

tests/unit/local-image-workspace.test.ts

@@ -159,7 +159,11 @@ describe('local AI design workspace', () => {
     expect(workspace).toMatchObject({
       workspaceId: 'workspace-legacy',
       conversationCount: 1,
-      conversations: [{ title: '历史会话', turnRevision: 2 }],
+      conversations: [{
+        title: '历史会话',
+        turnRevision: 2,
+        latestMessagePreview: '保留这条历史消息',
+      }],
     });
     await expect(service.getConversation(
       'workspace-legacy',
@@ -191,6 +195,7 @@ describe('local AI design workspace', () => {
     const quote = discussed.messages.at(-1)?.generationQuote;
 
     expect(discussed.phase).toBe('awaiting_confirmation');
+    expect(discussed.latestMessagePreview).toContain('方向已整理为图像方案');
     expect(quote).toMatchObject({ status: 'active', medium: 'image' });
     await expect(service.listTasks(created.workspaceId)).resolves.toEqual([]);
 
@@ -202,6 +207,7 @@ describe('local AI design workspace', () => {
       quoteId: quote!.quoteId,
     });
     expect(confirmed.turnRevision).toBe(2);
+    expect(confirmed.latestMessagePreview).toContain('图片任务已创建');
 
     const queued = await service.listTasks(created.workspaceId);
     const running = await service.listTasks(created.workspaceId);