Get Session Waveform

GET 
/api/widget/logs/:session_id/waveform

Get waveform data for a widget session recording.

Implements lazy computation:

1. Check if waveform exists in cache/database
2. If not, download audio and extract waveform using ffmpeg
3. Save waveform to database for future use
4. Return waveform data (300 amplitude values 0-1)

Only applicable for voice channel sessions.

Returns: waveform: List of amplitude values (0-1) for visualization

Request​