Manage a local Astronomer/Airflow environment with Astro CLI. Use when the user says astro dev start/stop/restart, local scheduler, astro dev parse, astro dev pytest, local task logs, localhost Airflow UI, or Makefile wrappers like make airflow / make scheduler-restart. Not for staging/prod inspection (vd:astro-airflow) and not for YAML DAG authoring (vd:dag-factory).