- handleVoice() downloads Telegram audio and transcribes via Whisper API
- transcribeAudio() calls Whisper with Basic Auth, handles json response
- TelegramWebhookController now routes message.voice and message.audio
- Whisper URL, token and toggle configurable from admin config panel
- Transcribed text echoed back to user then processed as normal text intent
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>