When a feature is a single SubProgramCall, wrap the call with a G52 offset shift, emit M98 P<num>, reset G52, and add M47 between features. Accepts an optional hole subprogram id map so the post can remap drawing-local subprogram ids to machine subprogram numbers. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>