An unparseable entry dropped out of the wanted set, so clean deleted the
directory and lock entry of a plugin the user still has configured.
Add tests/init_spec.lua covering setup, sync, clean and list.
- add lua modules for spec parsing, lock state, fs helpers and the installer
- add ArtiPackSync/ArtiPackClean/ArtiPackList commands and help doc
- add headless nvim test harness and specs
- add make test/lint/fmt/pre-commit and patch/minor/major bump targets
- add woodpecker test, lint and pre-commit pipelines
unkin-agent