GTFS

[amandaha8]

1. Cleaned up files that are no longer used.
2. Figured out why some operators were showing 0 routes = they didn't necessarily have data for the last month (in this case, January 2026). I changed the code to take the most recent date.

[github-actions]

nbviewer URLs for impacted notebooks:

• gtfs_digest/12_route_names.ipynb
• gtfs_digest/13_tiffany_route_id.ipynb
• gtfs_digest/14_op_digest_checks.ipynb
• gtfs_digest/19_airtable_portfolio_name.ipynb
• gtfs_digest/21_airtable_yml.ipynb
• gtfs_digest/36_observations.ipynb
• gtfs_digest/archive_district_report.ipynb
• gtfs_digest/archive_report_operator.ipynb
• gtfs_digest/report_operator.ipynb