feat(kernel): modifiers report exact face and edge history

Fillets (local, loop, rolling ball, corner, variable, chord), chamfers
(cutters, local corners, loops, two sides), shell, draft, offset faces,
split face/body, delete face, patch/copy/stitch/trim/extend and
transforms record their history over [body] while they build: faces
rebuilt from the body's, blends in place of edges (corner patches in
place of the edges at the corner), shell walls as offsets, edges as
pieces of the body's or where two faces meet. Multi-step operations
compose each step. The push-face offset fallback now has history, and
the bore union composes its narrowed tool.

A reflection reorders a body's edges, so transforms now match edges by
identity (mirrored copies reported the wrong edges).

Refs #136

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01J53sR6gEaVt56soFDpTck8

crates/kernel/src/boolean_record.rs

@@ -148,6 +148,20 @@ pub(crate) fn heal_body(body: &Body, solid: Solid, size: f64, keep: &[Vec<Vec3>]
     heal_build(solid, size, keep, faces, edges, counts)
 }
 
+/// `body` healed as the local modifiers take it (coplanar neighbours as one face, as after a
+/// join; faces split on purpose kept apart), with its history over `[body]`.
+pub(crate) fn healed(body: &Body) -> Result<Body> {
+    let counts = record::counts(&[body]);
+    heal_body(&operand(body, 0, &counts), body.deep_copy(), body.size(), body.split_keep(), &counts)
+}
+
+/// `body` copied as it is, unhealed (`Body::deep_copy`, which keeps its face and edge order),
+/// with its history over `[body]`: every face and edge kept.
+pub(crate) fn copied(body: &Body) -> Result<Body> {
+    let copy = Body::new(body.deep_copy())?;
+    Ok(operand(&copy, 0, &record::counts(&[body])))
+}
+
 /// The faces and edges of `a`, then of the tool `b` turned inside out as a void (`inner`, a
 /// copy of `b`, with `inner_edges` its edges by identity before turning): the history of
 /// `a` with `b`'s inside taken out where `b` lies wholly within it.
@@ -167,4 +181,4 @@ pub(crate) fn void(
 
 #[cfg(test)]
 #[path = "boolean_history_tests.rs"]
-mod tests;
+pub(crate) mod tests;