Plan dossier — CVN-N001-EI-S11 : Deployment-faithful HPO over-fit diagnostic: does the production f1_buy HPO search over-fit (selected-validation vs OOS-test f1_buy gap)?

Story: CVN-N001-EI-S11 · parent Epic CVN-N001-EI Type: implementation plan (ADR-68), for committee plan_review. Date: 2026-06-04

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Questions for the committee (plan_review)