1. set ruff line-length to 100, reformat 18 files;
2. move pr34 version to pyproject.common.toml, read via toml in meson.build;
3. fix meson install_subdir to only include meson/toolchains, not entire meson/;
4. add meson:install:list command with --mode meson|pyproject for dry-run;
5. add .venv-whl-cache to .gitignore exceptions and .gitattributes lfs tracking;
6. release pr34 v0.1.5.66 .whl;
7. commit python/.venv-whl-cache and archlinux/.venv-whl-cache via lfs;
