✨ New
- Self Voice Persistence toggle: control whether sidetone behavior persists across context changes (experimental).

🔧 Improvements
- Audio Source switch buttons stay tappable at all times; unavailable devices are dimmed instead of disabled, so the brief routing window isn't missed.
- Faster detection of when Audio Source switching becomes available again after a Multipoint or source-switch action.
- Added a tap-cooldown to prevent duplicate Audio Source switch commands from rapid taps.

✅ Fixes
- Multipoint toggle no longer shows an error when the device disconnects as part of applying the setting; the app now reconnects quietly instead.

