tests.yml and adopt-project.py: the Windows job installs git-filter-repo 2.47.0, so the adoption test files that skip without it run there, and a source that keeps its own root .gitattributes gets one marked block of /<copy> text eol=lf lines appended to it in the split, so a Windows clone writes the pinned copies at the root with the bytes the pin records; the verification counts that file as the source's bytes followed by exactly that block, and update-shape.py apply --add extends it (#471) - #511