完善客户端模块与工作区能力

tests/unit/works-square-design-workspace.test.ts

@@ -14,6 +14,7 @@ const serverConversation = {
   workspace_id: 'workspace-one',
   agent_session_id: 'session-one',
   title: '????',
+  latest_message_preview: '??????????',
   turn_revision: 1,
   phase: 'awaiting_confirmation',
   brief: {
@@ -190,7 +191,10 @@ describe('Works Square AI design adapter', () => {
     await expect(adapter.getWorkspace('workspace-one')).resolves.toMatchObject({
       workspaceId: 'workspace-one',
       conversationCount: 1,
-      conversations: [{ conversationId: 'conversation-one' }],
+      conversations: [{
+        conversationId: 'conversation-one',
+        latestMessagePreview: '??????????',
+      }],
     });
     await expect(adapter.createConversation({
       workspaceId: 'workspace-one',