MCRO PDF Group Report
    =====================
    This folder was generated by mcro_pdf_group_report.py.

    Scope:
      • Only JSON files where tracking.tracked_flag == true.
      • Only documents that have at least one entry in tracking.groups[*].pdf_group.
      • A document may belong to multiple pdf_groups; it is included in each group's stats.

    Main dumps:
      • pdf_group_documents.csv         — curated column set; 1 row per (doc, pdf_group).
      • pdf_group_attorneys.csv         — 1 row per (pdf_group, attorney entry).
      • pdf_group_objects.csv           — 1 row per (pdf_group, object) with doc context.
      • pdf_group_terms.csv             — 1 row per (pdf_group, doc, term) with quantities.
      • pdf_group_signatures_pdfsig.csv — 1 row per (pdf_group, doc) with pdfsig fields flattened.

    Stats:
      • pdf_group_overview.csv          — high-level metrics per pdf_group.
      • pdf_group_term_stats.csv        — per pdf_group/search_term aggregates.

    You can now use these CSVs to drive deeper analyses:
      • Per-group flag overlays (using your flags CSV).
      • Font hash uniqueness/probabilities per group.
      • Cross-group language, signature, and metadata comparisons.
