- Docker: PHP 8.3-fpm + nginx + supervisord
- MariaDB 11.8 (shared container)
- Previous upgrade: 5.2.3 → 6.0.7 already completed
Migrations Version20250828070131 (sms_messages) and Version20250923135527 (push_notifications) add a translation_parent_id column as unsigned int with a self-referencing FK to the id column, which is signed int.