{"service":"Quanti Voice","version":"2.0.0","engine":"piper-tts (local) + faster-whisper (local)","frequency_hz":8825,"coherence":0.882,"default_voice":"en_US-amy-medium","endpoints":{"POST /speak":"text → wav","POST /listen":"audio → transcription","POST /converse":"audio in → audio out","GET /voices":"available local voices","GET /play/<byteid>":"stream a generated wav","GET /healthz":"service health"}}