🔊 Feature Request: Add Optional Sound Notification When a Turn Ends

What feature would you like to see?

Summary

Propose adding an optional feature to have Codex CLI play a short sound when a turn completes.
This would improve user experience during long-running tasks or when multitasking, providing an immediate signal that the assistant has finished responding.

Motivation

When using Codex CLI interactively, especially with complex or long-running model outputs, users often switch to other windows or contexts while waiting for completion.
Currently, there is no non-visual cue that the turn has ended — requiring users to constantly check back.

A simple audio notification would:
• Improve usability for multitasking workflows.
• Reduce idle time between turns.
• Help accessibility for users who rely on auditory cues.

Additional information

Proposed Implementation

• Add a new optional config flag in the CLI (e.g. in .codex/config or via --notify-sound).
• When enabled, play a short system beep or custom sound after Codex finishes generating output for a turn.
• Implementation ideas:
• Use cross-platform audio libraries (e.g. rodio) or system-native sound APIs.
• For minimal setup, even a terminal bell (\a) would be a good MVP.
• Example configuration:

[notifications]
sound_on_turn_end = true
sound_file = "default"  # or path to custom sound

• Or configurable towards each workspace