Method updateMessage

src/app/repo/agent_chat.ts:92–100

(message: ChatMessage)

  // 更新消息（按 id 匹配）
  async updateMessage(message: ChatMessage): Promise<void> {
    const messagesDir = await this.getChildDir(MESSAGES_DIR);
    const messages = await this.readJsonFile<ChatMessage[]>(`${message.conversationId}.json`, [], messagesDir);
    const index = messages.findIndex((m) => m.id === message.id);
    if (index >= 0) {
      messages[index] = message;
      await this.writeJsonFile(`${message.conversationId}.json`, messages, messagesDir);
    }
  }

  // 保存整个消息列表（用于批量更新）
  async saveMessages(conversationId: string, messages: ChatMessage[]): Promise<void> {