Whisper previously hardcoded language:en, mis-transcribing id/en-mixed speech. Omitting 'language' makes Whisper auto-detect. Paired with enabling AI_VOICE_TRANSCRIPTION_ENABLED (BWS secret gmw_ai_voice_transcription_enabled = true) so new recordings are transcribed. Spec: .hermes/plans/2026-08-30_recordings-v2-features-spec.md