bug: Subagent不能看进度

### 问题描述 / What happened

codex，自定义api，不能看子代理进度

### 环境 / Environment

- Cindy 版本或 commit / version or commit:0.1.57
- 平台与版本 / platform & OS version: win
- 安装方式 / install method: exe

### 复现步骤 / Steps to reproduce

codex，自定义api，不能看子代理进度

### 日志与截图 / Logs & screenshots

_No response_

Start by reproducing the issue with Cindy 0.1.57 on Windows using the executable, Codex, and a custom API. Trace the subagent progress display from the reproduction and compare it with the working configuration, then verify that progress is visible for custom APIs without regressing other agent flows.

Written by the indexing model from the issue text.