Closes #

## What and why

## Before and after
<!-- For any visible change (the view, meshes, panels, results, icons): a picture before and after. Drag them in here. -->

## How it was verified
<!-- Tests added or changed; oracle cases (tests/oracle) for solver and meshing results, with their cited references. -->

## Checklist
- [ ] The issue was assigned to me before I started (see CONTRIBUTING.md)
- [ ] `cargo fmt --all`, `cargo clippy -p <crates I touched> --all-targets -- -D warnings` and their tests pass
- [ ] Before/after pictures for any visible change
- [ ] No code, text or data from GPL-family projects or commercial CAE products