forked from 1b-agent/opencadstudio-upstream
SolidOperation::Boolean runs synchronously, surfaces the kernel's refusal with a plain reason and leaves the operands untouched, consumes them on success unless keep_operands, and records one undo step. The lifecycle test uses planar boxes with exact volumes and covers chaining, refusals, both formats and undo; an ignored test shows a curved refusal reaching the script. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>