API speech-to-text, hébergée en Europe

# 1. Obtenir une URL d'upload présignée
curl https://api.techtuel.com/v1/uploads \
  -H "Authorization: Bearer $TECHTUEL_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "content_type": "audio/mpeg", "filename": "reunion.mp3", "size_bytes": 18400000 }'

# 2. Transcrire le fichier uploadé
curl https://api.techtuel.com/v1/transcriptions \
  -H "Authorization: Bearer $TECHTUEL_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "upload_id": "up_abc123" }'

{
  "id": "job_9f2c…",
  "status": "completed",
  "title": "Le 6-9 de France Inter",
  "language": "fr",
  "minutes": 12.5,
  "transcript": "Bonjour et bienvenue…",
  "segments": [
    { "start_seconds": 0, "text": "Bonjour et bienvenue" },
    { "start_seconds": 4.2, "text": "dans le 6-9 de France Inter" }
  ]
}