Resize to Fit snapped layouts larger than 48x48 to a hardcoded list of
inch mill sheets, so a plate already on a full sheet could not shrink to
its parts, and the cutoff ignored nest units and the machine's stock
sizes. It now rounds the parts' extent up to the auto-size plate factor
at every size through Plate.AutoSize.
Removes Plate.SnapToStandardSize and PlateSizes.Recommend with its
options; the sheet list and label lookup stay for Machine Config.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>