ComputeRemainderStrip used the bounding box of ALL plate parts against the full plate, missing large interior gaps between drawing groups. Now computes remainder within the current work area based on only the parts that were just placed. This lets subsequent drawings fill the gap between previous drawing groups instead of being forced into a tiny strip at the plate edge. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>