# decision-tree-exhaustive-search Drop saturation termination; run exhaustive DFS over the open-set cartesian product. Add mode-dependent child ordering (qualifies-for-most-reachable-specs in maximize-count mode, target-first in priority-order mode). Distinguish unevaluated cells from evaluated-zero in the per-set table. Add per-set + global progress indication and a 'Recommended' marker per set.