Shared-Basis Stability Analysis

This folder builds figures for the claim that subgroup size is more stable than internal profile only after both branches are projected onto the same support-oriented basis.

The shared metric used here is:

support3_score = mean(key_set_score, row_count_score, column_score)

Outputs:

support3_query_ecdf.png / .tex
support3_paired_delta_hist.png / .tex
support3_model_advantage_bars.png / .tex
support3_ecdf_curves.csv
support3_paired_delta_hist.csv
support3_model_advantage.csv
support3_prefix_advantage.csv
support3_paired_panel_table.csv
summary_metrics.json
INSIGHTS.md