Nests every part as the axis-aligned box of its material at its minimum-area
rotation and packs boxes with a maximal-rectangles free list (6 placement rules x
global/ordered pick). Sheet choice uses the salvage-credited look-ahead cost.
Curved extremes read the way the layout check sees them (circumscribed arcs on
the Clipper grid), so discs, rings and obrounds stay valid at box contact; an
80-job sweep failed 16-50 jobs before that rule.
Local 2026 production lanes (--min-salvage-dimension 12, --parallel 3):
- 91 all-rectangular jobs: 91/91 valid, cost 333081 vs best general 332153
(Gpt6Astra, 89/91 valid), 5.9 s vs 13.7 s (Opus55) and 169.5 s (Gpt6Astra)
- 77 box-filling (>= 90%) jobs: 77/77 valid, lowest total cost 641637
