**Motivations:**
- Publish new Collatz palier runs and associated artefacts (C3 local descent, universal clauses, iteration protocol).
- Extend the scripts toolbox to generate/verify clauses and build refinement certificates over S_m.
**Root causes:**
- Universal clause witnesses were lifted to 2^(A+1) even when the witness is already fixed modulo the domain palier, leading to unstable or unnecessarily weak/ambiguous modulus choices.
- CSV palier inference in scission could mis-detect short column names (e.g. "m") by substring matching.
**Correctifs:**
- Lift D_exact/F witnesses to m_stable := max(m, A+1) in universal clause extraction and run reports.
- Make scission palier/m column detection exact-match to avoid false positives.
- Update C3 local descent verification/reporting to use strict fusion witness selection prioritizing lower modular stability and refreshed D/F metrics.
- Add a dedicated run report profile for per-palier universal clauses.
**Evolutions:**
- Add scripts for terminal clauses and minorated descent clauses over S_m, their deterministic verification, and multi-level refinement certificate building.
- Add modular tooling for register_K and incremental comparison of D_minor families.
- Add/update feature documentation for the new pipelines and generated reports.
**Pages affectées:**
- applications/collatz/collatz_k_scripts/README.md
- applications/collatz/collatz_k_scripts/collatz_extract_universal_clauses.py
- applications/collatz/collatz_k_scripts/collatz_generate_run_report.py
- applications/collatz/collatz_k_scripts/collatz_iterate_palier_protocol.py
- applications/collatz/collatz_k_scripts/collatz_scission.py
- applications/collatz/collatz_k_scripts/collatz_verify_c3_local_descent.py
- applications/collatz/collatz_k_scripts/collatz_verify_universal_clauses.py
- applications/collatz/collatz_k_scripts/*refinement*over_Sm*.py
- applications/collatz/collatz_k_scripts/collatz_generate_*clauses_over_Sm.py
- applications/collatz/collatz_k_scripts/collatz_verify_minorated_descent_clauses_over_Sm.py
- applications/collatz/collatz_k_scripts/collatz_build_register_K_modular.py
- applications/collatz/collatz_k_scripts/collatz_compare_dminor_families_incremental.py
- applications/collatz/*.md
- docs/features/*.md
- docs/artefacts/collatz/**
- docs/collatz_run_report_2026-03-09_*.md
**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
**Motivations:**
- Cite universal clause extraction/verification as a first-class deterministic run in the standard reporting flow.
- Provide a measurable cartography of `conjoncture_collatz.md` duplication to enable later rationalization without immediate content moves.
**Root causes:**
- Universal clauses artefacts were not covered by the run report generator, making citations inconsistent with other C1/C2/C3 artefacts.
- `conjoncture_collatz.md` contains multiple repeated trunks and generic headings, preventing unambiguous internal referencing.
**Correctifs:**
- Add `universal_clauses` profile to `collatz_generate_run_report.py` parsing and reporting counts/ok from versioned artefacts.
- Add a versioned run report for the universal clauses artefacts.
**Evolutions:**
- Extend `docs/collatz_run_report_format.md` and `docs/features/collatz_run_report_generator.md` with the new profile.
- Link the new artefacts and report in `démonstration collatz.md` and `conjoncture_collatz.md`.
- Add `docs/collatz_conjoncture_collatz_cartographie.md` (livrable 1) with headings/duplication cartography and a no-deletion plan.
**Pages affectées:**
- applications/collatz/collatz_k_scripts/collatz_generate_run_report.py
- docs/collatz_run_report_2026-03-09_universal_clauses.md
- docs/collatz_run_report_format.md
- docs/features/collatz_run_report_generator.md
- applications/collatz/démonstration collatz.md
- applications/collatz/conjoncture_collatz.md
- docs/collatz_conjoncture_collatz_cartographie.md
**Motivations:**
- Produce a deterministic bridge from C3 local witnesses to universal-clause candidates (D/F) usable in later H4/H5 formalization.
**Root causes:**
- Local witnesses (Lift(B12)-scoped) were not exportable into a versioned, machine-checkable clause artefact.
**Correctifs:**
- Add deterministic extraction with minimal stable modulus lifting for D_exact/F and local encoding for D_brother dependencies.
- Add deterministic verifier checking arithmetic consistency, lifting stability, and brother↔mate relation.
**Evolutions:**
- Version universal clause artefacts (JSON/MD) under `docs/artefacts/collatz/universal_clauses/`.
- Document the feature and reproduction steps in `docs/features/`.
**Pages affectées:**
- applications/collatz/collatz_k_scripts/collatz_extract_universal_clauses.py
- applications/collatz/collatz_k_scripts/collatz_verify_universal_clauses.py
- docs/artefacts/collatz/universal_clauses/*
- docs/features/collatz_universal_clause_extraction_optionA.md
**Motivations:**
- Instrument the C3 “final lock” as a citeable deterministic artefact
- Provide a reproducible check over Lift(B12) at palier 2^13 using D8/Fusion witnesses
**Root causes:**
- C3 lacked a machine-checkable artefact aligned with the run-report standard
**Correctifs:**
- Add a deterministic verifier that checks fusion witnesses (m<n and U(m)=U^t(n)) and aggregates N* where computable
**Evolutions:**
- Version C3 verification artefacts under docs/artefacts
- Add run report profile c3_local_descent (sha256 + metrics)
- Document the new profile and reference the artefacts in the proof plan
**Pages affectées:**
- applications/collatz/collatz_k_scripts/collatz_verify_c3_local_descent.py
- docs/artefacts/collatz/c3_local_descent/verification_c3_local_descent.json
- docs/artefacts/collatz/c3_local_descent/verification_c3_local_descent.md
- applications/collatz/collatz_k_scripts/collatz_generate_run_report.py
- docs/collatz_run_report_2026-03-09_c3_local_descent.md
- docs/collatz_run_report_format.md
- docs/features/collatz_run_report_generator.md
- docs/features/collatz_c3_local_descent_verification.md
- applications/collatz/collatz_k_scripts/plan_lemmes_manquants_et_programme_de_preuve.md
**Motivations:**
- Make Lemma C2 assertions citeable without terminal transcripts
- Provide a deterministic check for “both-children residual” and projective projection to B12
**Root causes:**
- C2 relied on narrative links between completion docs and B12 invariance without a machine-checkable artefact
**Correctifs:**
- Add a deterministic verifier that checks set equalities and projections from the existing completion MD sources
**Evolutions:**
- Version C2 verification artefacts in docs/artefacts
- Add a run report profile (sha256 + metrics) for C2 projective verification
- Update the proof plan with explicit C2 statements and references
**Pages affectées:**
- applications/collatz/collatz_k_scripts/collatz_verify_c2_projective.py
- docs/artefacts/collatz/c2_projective/verification_c2_projective.json
- docs/artefacts/collatz/c2_projective/verification_c2_projective.md
- applications/collatz/collatz_k_scripts/collatz_generate_run_report.py
- docs/collatz_run_report_2026-03-09_c2_projective.md
- docs/collatz_run_report_format.md
- docs/features/collatz_run_report_generator.md
- docs/features/collatz_c2_projective_verification.md
- applications/collatz/collatz_k_scripts/plan_lemmes_manquants_et_programme_de_preuve.md
**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
**Motivations:**
- Make H6(E) checks reproducible and citeable for all 60 B12 states
- Provide an aggregated view of Δm(E) and minimal observed horizons
**Root causes:**
- applications/collatz/out/ is Git-ignored, so local H6 artefacts must live in versioned docs paths
- Per-state H6 evidence was previously limited to E1
**Correctifs:**
- Replace ambiguous palier inference for local certificates with explicit palier in JSON
**Evolutions:**
- Add a generator for versioned local H6 artefacts (per state) at palier 2^13
- Generate per-state local H6 run reports and a versioned aggregated index
- Reference the aggregated index from the proof plan
**Pages affectées:**
- applications/collatz/collatz_k_scripts/collatz_generate_local_h6_artefacts.py
- applications/collatz/collatz_k_scripts/plan_lemmes_manquants_et_programme_de_preuve.md
- docs/artefacts/collatz/local_H6_index.md
- docs/artefacts/collatz/local_E*_palier2p13/**
- docs/collatz_run_report_2026-03-09_local_H6_E*_palier2p13.md
- docs/features/collatz_local_h6_artefacts_and_index.md
**Motivations:**
- Avoid one-profile-per-state duplication for local H6 completeness checks
- Reuse a single strict verifier for any versioned local H6 artefacts set
**Root causes:**
- The initial local_H6_E1 profile was state-specific and not reusable for other E
**Correctifs:**
- Factor local H6 verification into a generic union-vs-lift equality check
**Evolutions:**
- Add `local_H6` profile with `--local-h6-artefacts-dir`
- Keep `local_H6_E1` as a stable alias to the E1 artefacts directory
- Document the generalized usage and update the E1 report output
**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
- docs/collatz_run_report_2026-03-09_local_H6_E1.md
**Motivations:**
- Make H6(E1) artefacts citeable/reproducible in-repo
- Generate a standard report without relying on ignored OUT/
**Root causes:**
- applications/collatz/out/ is Git-ignored, so local artefacts cannot be versioned there
**Correctifs:**
- Add strict set-equality check for H6(E1) lifted domain coverage
- Canonicalize H6(E1) artefact paths in the audit and plan
**Evolutions:**
- Add `local_H6_E1` profile to the run report generator
- Document the new profile in run report docs
**Pages affectées:**
- applications/collatz/collatz_k_scripts/collatz_generate_run_report.py
- applications/collatz/collatz_k_scripts/plan_lemmes_manquants_et_programme_de_preuve.md
- docs/collatz_run_report_format.md
- docs/features/collatz_run_report_generator.md
- docs/artefacts/collatz/local_E1_palier2p13/**
- docs/collatz_run_report_2026-03-09_local_H6_E1.md
**Motivations:**
- Start C1 with a concrete state E1 and a citable local-completeness (H6) target
- Support run reports beyond D18→D21 (section 7 validation)
**Root causes:**
- C1/H6 lacked a first explicit state-level coverage target
- Run report automation was limited to the extend pipeline
**Correctifs:**
- Add an explicit H6(E1) lift coverage plan with certified D/F semantics
**Evolutions:**
- Extend the report generator with profiles (extend_finale, validation_section7)
- Document the new profile usage in docs/ and docs/features/
**Pages affectées:**
- applications/collatz/collatz_k_scripts/plan_lemmes_manquants_et_programme_de_preuve.md
- applications/collatz/collatz_k_scripts/collatz_generate_run_report.py
- docs/collatz_run_report_format.md
- docs/features/collatz_run_report_generator.md
