Model loading now mirrors nfl4th. The expected-points and field-goal models ship with the package (the field-goal model refreshed to the copy on cfbfastR-data), so nothing is downloaded when the package is attached. The two xgboost models (fourth-down conversion and win probability), 17 MB together, are no longer bundled: each is downloaded from the package’s model_archive GitHub release the first time it is needed and cached under tools::R_user_dir("cfb4th", "cache"); the new cfb4th_clear_cache() forces a fresh download. The installed package shrinks from 17 MB to about 2 MB, and a failed download is one informative error instead of a failure inside a model call.
