config.py:
- Add AUDIO_SILENCE_THRESHOLD, AUDIO_SILENCE_MARGIN, AUDIO_MIN_DURATION,
AUDIO_MAX_DURATION so all audio tunables live in one place
whisper_main.py:
- RobotEar.get_text() now owns the full pipeline: silence trimming,
duration guards, WAV write, Whisper transcription with all options
- _fix_recognition() moved here from RobotApp (ASR post-processing
belongs in the ear layer, not the application layer)
- Add `import re`, `import config`; remove unused `sounddevice` import
voice_main.py:
- Remove `import scipy.io.wavfile` (WAV handling moved to whisper_main)
- get_audio_text() is now a one-liner: return self.ear.get_text(self.audio_frames)
- Remove _fix_recognition() (lives in RobotEar now)
Closes#9