update-shape.py: every NEXT line a run prints quotes its root, upstream, --accept-local paths, branch and lane trailer with shlex.quote, so check's apply, apply --branch's git -C <root> push && gh pr create and apply's own git -C <root> checkout -b && git -C <root> commit paste whole from a root under my projects/, it's here/ or $HOME/ (#325) - #374