[功能请求] 是否有望添加聊天记录备份功能

### QQ(TIM)版本/QQ(TIM) Version

9.0.71.17655

### 为什么你认为需要此功能

目前市面上所有聊天记录备份工具在qqnt后均失效了
祈求qa能实现这一功能

### 联系到哪些已经存在的bug或者功能

_No response_

### 具体功能需要/Specific features require

聊天记录备份

Start by reviewing how QAuxiliary handles QQ(TIM) 9.0.71.17655 and investigating why existing chat-record backup tools stopped working after QQNT. The issue does not name an entry point, file, or test, so the scope and completion criteria need to be established before implementation.

Written by the indexing model from the issue text.