View > Perspective Grid > Define Grid... opens a dedicated `perspectiveGrid` dialog
(ui.perspectiveGridDialog) prefilled from the current grid instead of a generic
form with fixed defaults that forced kind 2. The grid model gains (append-only)
name, viewing angle (the station point), units, scale, plane colours and opacity;
grids with a viewing angle foreshorten each axis as a true camera. New commands:
perspective.grid.get (read-only) and perspective.grid.define (one undo step,
only changed fields apply).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>