wp-phpunit ^6.0 requires PHP 8.0+ but our CI matrix includes PHP 7.4, breaking composer install on every push. Tests only use Brain Monkey, not wp-phpunit, so the dependency was dead weight. Deploy workflow now uses PHP lint as its only gate. PHPCS and PHPUnit stay in the separate ci.yml workflow where they belong. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>