Wires part-first mode from AutoNestForm into RunAutoNestAsync: reads PartFirstMode, SortOrder, MinRemnantSize, and AllowPlateCreation from the form, passes them through to a new part-first branch that delegates to MultiPlateNester.Nest instead of the plate-first loop. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>