Changes in version 0.0.2 (2025-08-28) Changes in version 0.0.1 Initial CRAN submission. Added - Core risk API: risk_pred_core() (2- and 5-year KFRE). - R6 helper: RiskPredictor with predict_kfre() and kfre_person(). - Dataframe helper: add_kfre_risk_col() to append kfre_var_year columns. - Performance utilities: eval_kfre_metrics() and plot_kfre_metrics(). - Outcome & staging: class_esrd_outcome() and class_ckd_stages(). - Misc: apply_precision(), unit tests incl. Seoul demo (skipped if local data missing).