3D sketch curves (wires): Include 3D Geometry keeps out-of-plane edges and curves 3D; Project To Surface (curves onto a face along the sketch normal), Intersection Curve (bodies/faces), Isoparametric Curve (u/v or a direction), Spun Profile (a body's outline about an axis) and Fit Curves to Mesh Section; all linked and re-resolved; wires drawn, inspected and deletable

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

crates/engine/src/view.rs

@@ -87,6 +87,10 @@ pub fn sketch_lines(sk: &Sketch, plane: &Plane, active: bool, determined: &[bool
             out.push((seg.polyline(0.02).iter().map(|p| plane.to_world(*p)).collect(), col, c.construction || c.centerline));
         }
     }
+    // 3D curves are in world coordinates already.
+    for w in &sk.wires {
+        out.push((w.pts.clone(), colors::SKETCH_PROJECTED, false));
+    }
     out
 }