Add option to disable microphone/dictation sound effects

Feature Request

Add a setting to disable the sound effect that plays when activating the microphone/dictation feature in Claude Code CLI.

Motivation

When using voice input frequently, the repeated audio feedback becomes disruptive. There's no OS-level way to mute just this sound without muting the entire terminal application.

Proposed Solution

A setting in ~/.claude/settings.json such as:

{
  "sounds": false
}

Or a more granular option:

{
  "sounds": {
    "dictation": false
  }
}

Alternatives Considered

• Muting the terminal app at the OS level (loses all terminal audio)
• Lowering system alert volume (affects all apps)

Neither is ideal since they have broad side effects.

Environment

• macOS
• Claude Code CLI