Regression test for components as frames (user bug #4, on 7a2eb05): a fillet picked in the world on a moved component with the root active, a sketch on a moved body's face, a body moved into a moved component keeping its place, and a fillet picked on a pasted instance; in its own test module

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

crates/engine/src/tests.rs

@@ -20,6 +20,8 @@ fn rel(a: f64, b: f64) -> f64 {
     (a - b).abs() / b.abs().max(1e-12)
 }
 
+mod component_frames;
+
 /// Sketch a 40 x 30 rectangle with dimensions, extrude 20, fillet a vertical edge, cut a hole.
 #[test]
 fn box_fillet_cut_part() {