Batch loft: build N independent lofts in a single kernel call.
Uses the C++ LoftBatch extractor when available (single WASM call), falling back to N individual loft operations otherwise.
Array of 3D shapes, one per entry.
Batch loft: build N independent lofts in a single kernel call.
Uses the C++ LoftBatch extractor when available (single WASM call), falling back to N individual loft operations otherwise.