refactor(preg): fold preg_match into preg_match2

preg_match copied every group into a Vec<Option<String>> while
preg_match2 handed back the borrowed captures. They now differ only in
the offset argument, so preg_match delegates with offset 0 and its
callers read groups through PregMatches::get.

Going through preg_match2 also makes preg_match honour the PCRE A
modifier, which it used to ignore; no caller passes such a pattern.

VersionParser::manipulate_version_string takes an index accessor instead
of a slice, and VersionParser::normalize matches against a copy of the
subject because the captures outlive the assignments to $version.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

0 files changed, 0 insertions, 0 deletions