Sketches on body faces follow their face: the plane is a face reference found again on each evaluation (same normal, nearest the picked point), and face extrudes (Extrude on a face, Press Pull) use the linked projection of the face's edges instead of a frozen copy, so they follow when earlier features change

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

crates/engine/src/cmd/sketch.rs

@@ -318,7 +318,7 @@ pub(super) fn plane_ref(s: &Session, p: &Value, cmd: &str) -> Result<PlaneRef> {
                     }
                 }
                 let pl = found.ok_or_else(|| bad(cmd, "no planar face at that point"))?;
-                PlaneRef::Custom { plane: pl }
+                PlaneRef::Face { plane: pl, at: fp }
             } else {
                 let origin = v.get("origin").and_then(vec3).unwrap_or(Vec3::ZERO);
                 let x = v.get("x_dir").and_then(vec3).ok_or_else(|| bad(cmd, "plane needs x_dir"))?;