Coil (PrimitiveCoil: diameter, two of revolutions/height/pitch, circular or square section inside/on/outside, start angle, handedness) on a new kernel helical sweep; loft to a point (sketch point sections, pyramids); recipes: a sweep along a fitted 3D helix replays as a coil (oracle 49, compared within 0.5% since Fusion's path is a spline fit) and loft point sections (oracle 37)

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

crates/doc/src/assembly.rs

@@ -187,6 +187,10 @@ impl FeatureKind {
                 dir(direction);
             }
             FeatureKind::Thread { face, .. } => pt(face),
+            FeatureKind::Coil { base, axis, .. } => {
+                pt(base);
+                dir(axis);
+            }
             FeatureKind::ReplaceFace { faces, target, .. } => {
                 faces.iter_mut().for_each(pt);
                 map_plane_ref(m, target);