Apprentice Train

Use when a user is ready to fine-tune a small model and already has verified rows, or asks what training needs: says "fine-tune", "distill", "train a small model", "LoRA", or asks how many rows training takes. Also use for drift on a model already running: whether it still holds quality and when to retrain. Local MLX training on Apple silicon is the path that works; hosted training is not shipped yet. For a user still deciding whether a cheaper model could work, or without a dataset, use apprentice instead, and delegate recording calls and prompt optimization to apprentice-capture and serving to apprentice-deploy.

Training is the second half of the product. The first half, a dataset of verified rows, has to exist before any of this runs.