34e5571fea
Critical: macOS BSD sed does not support \s character class. The two substitutions in the version-bump step silently no-oped, the grep fail-fast guard caught it (no remote damage), but release.sh couldn't complete. Using POSIX [[:space:]] works on both BSD and GNU sed. Also: extend test_git_archive_excludes_dev_files to cover .phpunit.result.cache, .beads/, .claude/, dist/, .DS_Store — the test now fully enforces .gitattributes export-ignore invariant.