Template
Layout, proplan.toml, README/CHANGELOG, placeholder product image, .gitignore, KiBot/release/docgen workflows and TEMPLATE.md. Source of truth: contrib/product-template in B4L/proplan (cargo test --test product_template checks it as Gitea 1.27 creates a repository from it).
Mechanics
FreeCAD sources (*.FCStd) and STEP exports of enclosures, holders and
heatsinks. FreeCAD backups (*.FCBak, *.FCStd1) are not committed.