refactor: extract SelectionManager from PlateView

Move all selection state and operations (SelectedParts, SelectedCutOffs, DeselectAll, SelectAll, AlignSelected, RotateSelectedParts, PushSelected, GetPartAt*, GetPartsFromWindow, DeleteSelected) into a new internal SelectionManager class. PlateView retains public forwarding methods and properties to preserve the existing API surface. SelectedCutOff property kept public for WinForms designer compatibility.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
2026-04-07 15:09:08 -04:00
parent 11884e712d
commit 089df67627
3 changed files with 310 additions and 193 deletions