8b pipeline TTS (bouton explicite, crédits Studio, MP3 via ffmpeg), 8c onglet Narrateurs, 8d portrait côté visiteur. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_011VxSQeGQYUvPmSEoGdnidA