* fix: restore ci compatibility on windows
* fix: normalize hook path assertions on windows
* fix: relax repo root assertion on windows
* fix: keep hook root assertion strict on windows
- Fix path traversal regex prefix confusion in perl-security skill
- Revert v1.4.0 changelog entry (Perl not part of that release)
- Rename $a/$b to $x/$y to avoid shadowing sort globals
- Replace return undef with bare return per perlcritic rules
Add rules/perl/ with 5 rule files (coding-style, testing, patterns,
hooks, security) following the same structure as existing languages.
Update README.md, README.zh-CN.md, and rules/README.md to document
Perl support including badges, directory trees, install instructions,
and rule counts.