Scans all videos that still have a local file, checks NAS for meta.json
(written last in syncVideo, so its presence confirms a complete push),
then removes the local copy if confirmed.
Usage:
php artisan nas:free-local --dry-run # preview
php artisan nas:free-local --force # delete
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>