Retaining a better valid plan reconciled its optimization provenance,
which evaluated every active objective once per credited placement with
that placement released. Only the credited objectives are compared, so
the released plan now evaluates just those and skips observing the
others. Retention also stops computing quality metrics that nothing
read. The retained plan and what Cancel returns are unchanged.
Part of #302.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
nessarandClaude Opus 5.5
2fcba758c8