The 30 trace cases' FreeViolated lines (column, gradient magnitude, threshold) are pinned by exact equality beside the base-derived decisions they feed, so a free-set test that is mis-called from SolveTraced (a shifted threshold, a short free count) fails here and not only in the hand-built FreeSetViolated tests.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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