Codex Desktop: context usage indicator disappeared from chat window

The latest Codex Desktop update appears to have removed or hidden the context usage progress indicator from the chat window.

This is a regression because context usage is critical for deciding when to compact the conversation, start a new thread, or avoid quality degradation in long-running tasks.

Please restore the context usage percentage/progress indicator, or provide an equally visible replacement in the Codex Desktop UI.

<img width="1173" height="193" alt="Image" src="https://github.com/user-attachments/assets/7a040bad-f447-4bd3-ad48-99c437a22995" />