**Motivations:**
- Prevent citing local H6 reports with inconsistent paliers
- Make expected vs certified palier explicit in generated reports
**Root causes:**
- Certificates can be produced from CSVs where the palier is not encoded in the class column name
- Reports did not surface palier expectations vs certificate metadata
**Correctifs:**
- Add an explicit audit section comparing artefact expected palier to certificate palier
**Evolutions:**
- Document the palier audit in report format and generator docs
- Record observed uniform bounds (Δm(E), max fusion horizon) in the proof plan as audit facts
**Pages affectées:**
- applications/collatz/collatz_k_scripts/collatz_generate_run_report.py
- docs/collatz_run_report_format.md
- docs/features/collatz_run_report_generator.md
- applications/collatz/collatz_k_scripts/plan_lemmes_manquants_et_programme_de_preuve.md
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