submitCash.php, submit.php, and webhook.php were creating kitchen
tasks without TaskTypeID, which is NOT NULL with no default. This
caused cash order submission to fail with a SQL error.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Complete port of all 163 API endpoints from Lucee/CFML to PHP 8.3.
Shared helpers in api/helpers.php (DB, auth, request/response, security).
PDO prepared statements throughout. Same JSON response shapes as CFML.
