Detect whether pest, phpunit, or pint are installed before running them.
Repos without test runners will skip gracefully instead of failing with
"No such file or directory".
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Port all PHP command files from core/cli internal/cmd/php/ into a
standalone module. Inlines workspace dependency to avoid cross-module
internal imports.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>