Language files carry their Faction record key (eighth element of the lang echo);
Build records the maker it judged (aetheria.hull_maker); Package compares it with
ship_cc.product_makers before writing anything (ruling hull-faction-is-product-maker,
finding hull-names-its-own-faction). _art_takes_over is shared with _retire_hull_source.
Unit tests untested at this commit until the Yggdrasil run; bpy smokes not run.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
7f35c79ecc