Function setTopicCollapsed

src/renderer/src/services/messagesService.ts:281–287

(
  pageId: string,
  topicId: string,
  collapsed: boolean
)

 * 设置 Topic 折叠状态
 */
export async function setTopicCollapsed(
  pageId: string,
  topicId: string,
  collapsed: boolean
): Promise<void> {
  await stores.message.updateTopic(pageId, topicId, { collapsed })
}

/**
 * 获取页面的所有 Topics