The NIBArchive projection synthesizes customClass, label, and objectID so
its records share the ibtool dictionary parser. The parser then returned
those values as class_name, name, and the object ID, and the graph node
kept the synthesized copies in attributes as well. Attributes now omit a
key whose value its canonical field already carries; differing authored
values stay. Transmission.app decode_interface_builder output shrinks
from 6.45 MB to 6.14 MB.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>