- Add AIRFLOW__CORE__DAGS_FOLDER env var in Dockerfile so it's always set
- Run `airflow dags reserialize` after `db migrate` in init container so
DAGs appear immediately without waiting for scheduler scan interval
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Airflow 3 replaced `airflow webserver` with `airflow api-server` and
removed the `airflow users` CLI. Auth is now via SimpleAuthManager
configured through AIRFLOW__CORE__SIMPLE_AUTH_MANAGER_USERS env var.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>