Desktop app (macOS): Read aloud voice not configurable — legacy system voice unavailable

Filed on behalf of a user via Claude Code.

**Issue:** The desktop app's Read aloud button (speaker icon on assistant messages) uses a fixed TTS voice with no way to change it. The user wants the legacy system voice they've used on their iPhone for years, but it doesn't appear to be available or selectable in the desktop app — behavior they describe as a bug, since the same voice works fine on their phone.

**Expected:** Either a voice picker for Read aloud, or the app respecting the macOS system voice (System Settings → Accessibility → Spoken Content → System voice).

**Environment:** macOS (Darwin 25.5.0), Claude desktop app, Code tab.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Start by locating the desktop app's Read aloud button and speaker-icon entry point in the Code tab; the issue does not name files or tests. Check the macOS Spoken Content system voice setting and compare it with the app's current behavior. Done means users can select a voice or the app respects the configured macOS system voice.

Written by the indexing model from the issue text.