- AI_VOICE_TRANSCRIPTION_MODEL config (default whisper-1) so the model can be a provider-qualified id (openrouter/openai/whisper-1) that actually has credentials through 9router/omniroute — bare whisper-1 maps to the openai provider which has none
- response_format json (not text): 9router proxies only json/verbose_json transcription responses; text returns 400
- parse text from the json response object
- prod env updated: model=openrouter/openai/whisper-1 (still needs OpenRouter STT balance — 402 until funded)