ae1b565ca3
Adds plot_kl_bars/plot_kl_bars_pl (numpy/polars variants) for ranking which target dimension or pdg/material stratum drives KL regressions, with the same kl*n group capping as plot_marginals. Switches existing histogram plots to step-type/log-scale. Adds sample_frac to load_predicted_local for subsampling large predict parquets. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>