Voice approval gate before $33 / ~330K-char full narration
Voice: Brian Deep Resonant (ElevenLabs `nPczCjzI2devNBz1zQrb`) Length: ~2 min preview from Chapter I — Mr. Sherlock Holmes Sample size: 3,000 chars / 2.6 MB MP3
"Mr. Sherlock Holmes, who was usually very late in the mornings, save upon those not infrequent occasions when he was up all night, was seated at the breakfast table…"
If approved: 15 chapters narrate overnight via ElevenLabs, ~7 hours total runtime, gated on .smoke-approved flag in audiobook-catalog/production-queue/01-prep/.