v2.3.1

Bug Fixes

• Fixed SplitHandler off-by-one bug: output files are now correctly named part_1.pdf–part_N.pdf to match Ghostscript's actual output (was part_0.pdf–part_{N-1}.pdf)
• Fixed MergeHandler undefined variable in catch block; added guard to throw HandlerException when $files is empty
• Fixed GetTotalPagesHandler undefined variable in catch block
• Fixed isPdf() in BaseHandler to check file existence before calling mime_content_type(), preventing PHP warnings on non-existent paths
• Added image type validation in ToImageHandler — only jpeg and png are accepted; invalid types now throw HandlerException

CI

• Resolved PHPUnit security advisory blocking issue via composer.json audit ignore config

Full Changelog: v2.3.0...v2.3.1