**Motivations:**
- Support deterministic iteration beyond 2^13 with palier-scoped artefacts and reports.
**Root causes:**
- C3 palier runs needed distinct report naming; universal clause reports referenced a hard-coded C3 input.
- Palier iteration lacked a deterministic way to mass-generate local H6 run reports and keep `local_H6_index.md` consistent.
**Correctifs:**
- Add `c3_local_descent_palier` report profile (distinct filename per palier) and fix C3 report wording to use the actual palier.
- Make `universal_clauses` report profile derive its C3 input from `clauses_universelles.json`.
**Evolutions:**
- Add `collatz_generate_local_h6_run_reports.py` and extend `collatz_iterate_palier_protocol.py` to include C1 reports + palier-scoped universal clause outputs.
- Update documentation and proof pointers for palier2p14 artefacts/reports.
**Pages affectées:**
- applications/collatz/collatz_k_scripts/collatz_generate_run_report.py
- applications/collatz/collatz_k_scripts/collatz_generate_local_h6_run_reports.py
- applications/collatz/collatz_k_scripts/collatz_iterate_palier_protocol.py
- docs/collatz_run_report_format.md
- docs/features/collatz_run_report_generator.md
- applications/collatz/démonstration collatz.md
- applications/collatz/conjoncture_collatz.md