scaffold-project.py: a leg path the project's own YAML reader would read back as another type (null, ~, true, False, 2026, 1.5) is refused before anything is created, under --dry-run alike, through the one definition adopt-project.py asks, so --spec-path 2026 no longer creates three repositories whose first bootstrap fails manifest-leg-path, and adopt-project.py execute no longer says adoption verified before that bootstrap fails (#225) - #266