Custom attention.sounds and sound_pack in tui.json have no effect

Description

Audio notifications work correctly in OpenCode, but custom notification sounds configured in tui.json do not seem to have any effect.

The default OpenCode notification sound is always played, even when overriding sounds with valid audio files.

Changing sound_pack also does not change the notification sound.

Additional information:

• Audio output works correctly in WSL2.
• paplay can successfully play the same .oga files.
• OpenCode notification sounds work, but configured overrides do not seem to be applied.

Plugins

No plugins installed

OpenCode version

1.18.4

Steps to reproduce

1. Install OpenCode 1.18.4.
2. Enable sound notifications in ~/.config/opencode/tui.json:

{
"attention": {
"enabled": true,
"sound": true,
"volume": 1
}
}

3. Configure custom sounds:

{
"attention": {
"sounds": {
"done": "/usr/share/sounds/freedesktop/stereo/dialog-error.oga"
}
}
}

4. Restart OpenCode.
5. Trigger a notification (for example, run a command and wait for completion).

Expected:
The configured sound file should be played.

Actual:
The default OpenCode notification sound is played instead.

Screenshot and/or share link

No screenshot available. The issue is reproducible from configuration only.

Operating System

Windows 11 with WSL2 Ubuntu 22.04

Terminal

Warp terminal running Ubuntu in WSL2