with flex layout that reserves space above the bar for menu cards
- Increase HUD window size to 620x520 for menu card headroom
- Replace mic on/off toggle with mic selector card showing all available
microphones with live audio level meters per device
- Remove old separate mic controls panel
- Increase bar size with larger buttons, padding, and separators
- Fix TS null safety in stopRecording MediaRecorder accessfix
- Add pause, resume, and cancel recording controls with elapsed timer
- Move folder, language, and system audio into three-dots overflow menu with source highlight
wave