D009 - The window matches Orbistoun's toolkit

Status: decided Date: 2026-09-26

pros-gui uses the same eframe and egui versions and the same wgpu backend as Orbistoun's window, pinned once in the workspace manifest.

Why: the two windows do the same kind of work over the same library and share oops-docs, so a shared GUI crate stays a move rather than a port. A lossless frame grab also needs a GPU surface to be displayed on.

Rejected:

• The current toolkit release: diverges from the sibling and from oops-docs.
• A different backend: a second rendering path for the same kind of window.