Sweeps and pipes along 3D sketch curves (projected, intersection and included curves): a path that uses sketch wires is followed as one chain of points by a new kernel sweep_path (rotation-minimising frame; smooth B-spline walls per profile segment, or ruled walls mitred at sharp corners and for profiles with holes); 3D sketch curves can be picked as sweep paths

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

crates/kernel/src/lib.rs

@@ -32,6 +32,7 @@ mod sew;
 mod step;
 mod step_in;
 mod step_out;
+mod sweep_path;
 mod topo;
 
 pub use blend::{chamfer, fillet};
@@ -47,6 +48,7 @@ pub use sew::{EdgeSpec, FaceSpec, SurfSpec, sew};
 pub use step::step_export;
 pub use step_in::{ImportedBody, StepImport, StepNode, step_import, step_import_shared, step_orientation_errors, step_validate};
 pub use step_out::{ExportBody, ExportProduct, StepHeader, step_export_bodies, step_export_products};
+pub use sweep_path::sweep_path;
 pub use topo::{CylinderFace, cylinder_face_at};
 pub use topo::{TopoCounts, merged_topology, seam_flags};