USDA SNOTEL (SNOTEL)
Upstream: USDA WCC reportGenerator CSV endpoint (wcc.sc.egov.usda.gov). Station list and URL fragments come from a bundled or custom CSV (station_csv, columns such as SITE_ID, SITE_NAME, STATE).
Transport: HTTP GET via coldcast.download.download_requests().
Auth: None for the public report generator URLs used in defaults (subject to USDA terms).
CLI: coldcast download snotel
Settings: SNOTEL — url_base, url_template, filename_template, url_param, station_csv.
Code: coldcast.sources.snotel