A body of several pieces (a plate and the islands a cut leaves inside its
holes, such as letter counters) was written as one BREP_WITH_VOIDS whose
other shells were voids. Export now writes one solid per lump, each with
its face colours; a real void stays a void of its lump.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Persist typed sketch dimensions and bounded ordered configuration rules in format 8. Use exact occurrence paths and source identity for editing, movement, appearance, and mass. Preserve sheet material regions through cutting, folding, and exact DXF export; retain nested cavities and material islands.
Validation: cargo xtask ci passed, including 368 engine tests, 178 UI tests, 68 UI scenarios, 136 kernel tests, and the 10-crate wasm check. Actual preview workflows and legacy format-7 origin-corner reopening were inspected.
