Opus55 ignored NestJobPart.Priority, so the shared contract test (lower
number wins scarce stock) failed; lower-number priority now precedes its
placement score. SheetEconomics is replaced by the host's NestJobCost so
it optimizes exactly what the benchmark scores, and its footprint margin
comes from NestTolerances.SafeClearanceMargin plus four Clipper grid
units - the same 0.003 total as before, which keeps its contact points.
Synthetic benchmark (5 jobs, salvage 0.5): all valid, cost unchanged at
5452.79, time 611 -> 456 ms.
Co-Authored-By: Codex <noreply@openai.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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