4-phase plan: fix tests + OOM safety, inference path, longer training, hyperopt end-to-end. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
4-phase plan: fix tests + OOM safety, inference path, longer training, hyperopt end-to-end. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>