Description:

• user stopped mic audio device detection:

• user resumed mic audio device detection:

• Tests passing:

• Separates live meeting state from actual audio/transcription capture state.
• Adds backend capture_status and audio device status events for mic pause/resume.
• Updates meeting notes UI to show paused/stalled/waiting states instead of always saying recording.

Fix:

• Shows Microphone paused when mic input is paused.
• Refreshes device state immediately after audio device start/stop.
• Prevents empty transcripts from looking like a recording failure when capture is intentionally paused.