Delete Face (face.delete, and faces in the Delete selection): a timeline feature that removes faces and heals the gap from the neighbouring planes through kernel::delete_faces; a picked face brings the rest of its surface (both halves of a hole's wall); face picks are stored by persistent name; a face its neighbours can't close is refused with the kernel's reason

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AS5Tn3xieewUSg3uxrMVdL

crates/kernel/src/lib.rs

@@ -56,6 +56,7 @@ pub use iges_in::{MAX_IGES_BYTES, iges_import, iges_to_step};
 pub use iges_out::iges_export_bodies;
 pub use measure::{BodyMeasure, measure};
 pub use meshbody::{MAX_TRIANGLES, mesh_body};
+pub use offset::with_same_surface;
 pub use ops::{BoolOp, boolean, split_by_plane, transform, transform_matrix};
 pub use polybool::{faceted_boolean, planar_boolean};
 pub use polyhedron::{HalfSpace, convex_polyhedron, draft, offset_faces, shell};

crates/kernel/src/offset.rs

@@ -747,7 +747,7 @@ pub(crate) fn draft_walls(b: &Body, chosen: &[usize], neutral: &solvecraft_geom:
 
 /// The chosen faces and every face on the same surface joined to them (the halves of a hole's
 /// wall), as face indices.
-pub(crate) fn with_same_surface(b: &Body, chosen: &[usize]) -> Vec<usize> {
+pub fn with_same_surface(b: &Body, chosen: &[usize]) -> Vec<usize> {
     let faces: Vec<mt::Face> = b.solid.face_iter().cloned().collect();
     let size = b.size();
     let tol = (size * 1e-7).max(1e-9) * 100.0;