<ul><li>Replaced <code>error_reporting(0)</code> with <code>error_reporting(E_ALL)</code> across 73 project files</li><li>Replaced <code>ini_set('display_errors', 0)</code> with 1 across 30+ controller and AJAX files</li><li>Fixed <code>gbl_vars.php</code> and <code>gbl_ns_vars.php</code> — global error display now always E_ALL</li><li>Fixed hase-api endpoints and openaiController</li><li>Excluded third-party libraries: OAuth, PHPMailer, ticket system patches, securimage</li></ul>