forked from 1b-agent/opencadstudio-upstream
The MIRROR command's LwPolyline / Polyline2D closures reflected the vertices but left the bulges untouched, so every curved segment of a mirrored polyline bowed to the wrong side. A reflection reverses the side a bulge arc bows to — negate it alongside the vertex reflection (same convention acadrust applies on its reflecting-transform paths). Co-Authored-By: Claude Opus 4.8 <[email protected]>