3 Diagnose recent Sessions
Use a disclosed Historical Job to find recurring failures before building a promotion Dataset.
Historical evaluation lowers the cold-start cost. Preview bounded Session metadata, inspect what may reach the Judge, then confirm a non-promotion Job.
You do
Select recent completed Sessions that reflect the failure, review exclusions and consent to the disclosed Judge/data boundary.
Harbor records
A private redacted Batch, frozen Judge identity, one Trial per Session, criterion applicability, coverage and reason codes.
This does not prove
Historical scores are not comparable Candidate regression evidence and never go through Promotion Gate.