#3436：修复了阻止 Codex 初始化外部 MCP 服务器的问题
## 已合并的拉取请求
- [#2799] 保存模型及推理更改 (#2799)
- [#3436] 将 user_agent 设为可选参数 (#3436)
#3436: hotfix for issue that prevented Codex from initializing external MCP servers
## Merged PRs
- [#2799] Persist model & reasoning changes (#2799)
- [#3436] Make user_agent optional (#3436)