Codex App: Active conversation in the sidebar has insufficient contrast

What version of the Codex App are you using (From “About Codex” dialog)?

Version 260210.1703 (602)

What subscription do you have?

Pro

What issue are you seeing?

<img width="291" height="103" alt="Image" src="https://github.com/user-attachments/assets/5a1f45b4-d1d9-477e-832c-ecb7be623449" />

It's currently very difficult to see which conversation is active in the sidebar of Codex App. The background of the active convo needs more contrast.

What steps can reproduce the bug?

1. Turn on dark mode
2. Select a conversation
3. Vaguely see active conversation in sidebar

What is the expected behavior?

1. Turn on dark mode
2. Select a conversation
3. Clearly see active conversation in sidebar

Additional information

_No response_