# Nonlinear Static Newton–Raphson Coordination Record

## 1. Metadata and Feature Scope

- feature_id: `nonlinear-static-newton-raphson`
- workflow_state: `needs-formulation`
- owner_agent: `coordinator-agent`
- request_date: `2026-08-18`
- last_updated: `2026-08-23` (Stage 2 사용자 명시 승인; Stage 3 Formulation Agent dispatch 준비)
- process_classification: `architectural`
- requested_capability: Newton–Raphson 방법을 사용하는 새 nonlinear static analysis procedure
- proposed_scope_boundary: 첫 release는 initial configuration 기준 Total Lagrangian, materially linear + geometrically nonlinear MITC4로 제한한다. 요구조건 인터뷰와 8단계 evidence gate를 먼저 완료하며, 승인 전에는 상세 수치·I/O·구현 범위를 확정하거나 기존 linear-static lifecycle을 변경하지 않는다.
- naming_note: 사용자 표현 `Newton-Rhapson`은 표준 명칭 `Newton–Raphson`으로 정규화했다.
- current_goal: 승인된 `requirements.md`와 사용자 승인된 `research.md`를 입력으로 Stage 3의 구현 가능한 `formulation.md` 계약을 Formulation Agent에게서 확보하고 독립 evidence audit을 수행한다.
- constraints: 승인된 physics/scope/tolerance/authoritative output/public compatibility를 보존한다. Stage 3는 O-ROT/O-MAP/O-DRILL/O-MOM/O-BC를 구현 가능한 수학 계약으로 해소하되 HDF5/I/O schema, reference artifact, C++/tests/CMake, phase/Harness 또는 Stage 4 판단으로 확장하지 않는다. Abaqus/Midas 내부 동등성을 주장하지 않는다.
- repository_audit: 기존 worktree에는 `.codex/agents/*.toml`과 `AGENTS.md`의 사용자 변경이 있으며 이를 보존한다.

## 2. Eight-Stage Worklist

| stage | owner | status | output paths | acceptance gate | evidence summary | blockers | attempt count |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Requirements | `requirement-agent` | `passed` | `docs/nonlinear-static-newton-raphson/requirements.md` | `<=400` lines, 24 canonical shall requirements, exact 24-row Matrix, approved semantic loss 0, Stage-1 user question 0 | Approved compact content 395 lines; approval metadata 2 lines, current 397; 24↔24 exact ID sets, duplicate/missing/orphan 0, OQ/questions/trivia/placeholders 0; core semantics and NSNR-083 public precedence retained; forbidden changes 0; user explicitly approved on 2026-08-23. | 없음 | 40 |
| 2. Research | `research-agent` | `passed` | `docs/nonlinear-static-newton-raphson/research.md` | 필요한 이론·benchmark·source reliability·applicability limit가 충분함 | Owner/Coordinator pass와 2026-08-23 사용자 명시 승인; 10 required sections, S1–S17, 12 benchmark candidates, 11 research-relevant requirement IDs, 14 unique open issues; nonlinear stored reference gap explicit; SHA-256 `C920A6B02381230D1DB419D73FE767D611B36720D27D6410507BA88C3CA28EEE`; forbidden changes 0. | 없음 | 1 |
| 3. Formulation | `formulation-agent` | `in-progress` | `docs/nonlinear-static-newton-raphson/formulation.md` | strong/weak form, kinematics, tangent/residual, integration, state/recovery가 구현 가능한 계약이며 O-ROT/O-MAP/O-DRILL/O-MOM/O-BC가 승인 scope 안에서 해소됨 | Stage 3 bounded dispatch 준비; approved requirements SHA-256 `910E351F3F90FFA42F07D15206B55E62C05EAE821E250424430148337506EBF2`, approved research SHA-256 `C920A6B02381230D1DB419D73FE767D611B36720D27D6410507BA88C3CA28EEE`. | Formulation Agent 반환 evidence 대기 | 1 |
| 4. Numerical/reference review | `numerical-review-agent` | `pending` | `docs/nonlinear-static-newton-raphson/numerical-review.md`; `docs/nonlinear-static-newton-raphson/reference-model.md` | 두 문서가 함께 `pass-for-io-definition`이며 수치 안정성과 exact reference contract가 준비됨 | 없음 | Stage 3 사용자 승인 필요 | 0 |
| 5. I/O definition | `io-definition-agent` | `pending` | `docs/nonlinear-static-newton-raphson/io.md` | Abaqus subset, semantic mapping, HDF5 schema, diagnostics, CSV projection이 승인됨 | 없음 | Stage 4 사용자 승인 필요 | 0 |
| 6. Implementation | `implementation-planning-agent`; `implementation-agent` | `pending` | `docs/nonlinear-static-newton-raphson/implementation-plan.md`; `docs/nonlinear-static-newton-raphson/implementation-report.md`; `docs/nonlinear-static-newton-raphson/build-test.md`; `docs/nonlinear-static-newton-raphson/reference-comparison.md` | 상세 인터뷰와 계획 승인 후 TDD, MSVC/x64/Debug CMake/CTest, blocking reference comparison이 통과함 | 없음 | Stage 5 사용자 승인과 implementation-planning interview 필요 | 0 |
| 7. Physics evaluation | `physics-evaluation-agent` | `pending` | `docs/nonlinear-static-newton-raphson/physics-evaluation.md` | equilibrium, reaction, direction, path/history, energy, symmetry, model coverage가 `pass-for-release-agent`임 | 없음 | Stage 6 passing evidence 필요 | 0 |
| 8. Release readiness | `release-agent` | `pending` | `docs/nonlinear-static-newton-raphson/release.md` | `ready-for-release` recommendation과 acceptance traceability가 완전함 | 없음 | Stage 7 passing evidence 필요 | 0 |

## 3. Active Dispatch Package and Latest Sub-Agent Return

### Active Dispatch Package

- feature_id: `nonlinear-static-newton-raphson`
- current_dispatch: `stage-3-formulation-attempt-1`
- target_sub_agent: `formulation-agent`
- required_inputs:
  - `docs/nonlinear-static-newton-raphson/requirements.md` (`approved`; user approval date `2026-08-23`; SHA-256 `910E351F3F90FFA42F07D15206B55E62C05EAE821E250424430148337506EBF2`).
  - `docs/nonlinear-static-newton-raphson/research.md` (`passed`; user explicitly approved Stage 2 on `2026-08-23`; SHA-256 `C920A6B02381230D1DB419D73FE767D611B36720D27D6410507BA88C3CA28EEE`).
  - `AGENTS.md`, `docs/PRD.md`, `docs/ARCHITECTURE.md`, `docs/ADR.md`, `docs/TOLERANCE.md`, `docs/SOLVER_AGENT_DESIGN.md`.
  - `docs/linear-static-mitc4-shell/formulation.md`의 approved linear 계약과 §15 gap inventory. §15는 nonlinear 해답으로 복사하지 않는다.
- expected_outputs: `docs/nonlinear-static-newton-raphson/formulation.md`
- acceptance_gate: Formulation Agent가 `fesa-formulation-spec`을 사용하여 strong/weak form, fixed-initial-reference TL kinematics, finite committed/trial triad와 objective update, exact `24 global -> 20 physical + 4 drill` residual/tangent 및 map Hessian, objective numerical drilling potential/Hessian, fixed-global dead force/moment work, prescribed finite-rotation BC path, integration, state/commit/rollback, recovery와 verification identities를 구현 가능하게 정의한다. O-ROT/O-MAP/O-DRILL/O-MOM/O-BC는 unresolved placeholder 없이 승인 범위 안에서 해소되고, requirement traceability와 explicit assumptions/limits가 있다.
- stop_condition: `formulation.md`와 output paths/status/evidence summary/blockers만 Coordinator에 반환한다. Peer/Stage 4를 dispatch하거나 C++/tests/CMake/I/O schema/reference artifact/tolerance/phases/Harness를 생성·변경·실행하지 않는다. 승인된 scope/physics/tolerance/authoritative output/public compatibility를 변경할 필요가 있으면 문서에 임의 반영하지 말고 blocker로 반환한다.
- missing_evidence: Formulation Agent 소유 `formulation.md`, self-audit, O-ROT/O-MAP/O-DRILL/O-MOM/O-BC closure map과 acceptance-gate evidence.

### Latest Sub-Agent Return

- target_sub_agent: `research-agent`
- output_paths: `docs/nonlinear-static-newton-raphson/research.md`
- status: `passed` (owner); `needs-rework` (user review gate)
- evidence_summary:
  - 17 external sources cover original MITC4/TL theory, finite rotation, objective/consistent linearization, Full Newton, V&V/MMS and nonlinear shell benchmarks.
  - B-01–B-06 invariant/software checks, B-07F/B-07M large-rotation cantilevers, public NAFEMS 3DNLG-1/9 candidates, locking characterization and shell-MMS gap are separated by applicability.
  - `reference/shell/` and `reference/shellR/` are explicitly retained as `nlgeom=NO` linear evidence; exact stored nonlinear input/CSV remains an honest Numerical Review gap.
  - Objective 24-DOF mapping/drilling, nodal-moment work, prescribed finite-rotation path, invariant tolerances and fixed-step benchmark traversability are routed downstream without inventing contracts.
- blockers:
  - User Stage-2 review/approval only.
- self_audit_findings: Coordinator independently confirmed 10 required sections, exact S1–S17 inventory, 12 benchmark sections with artifact/gap/target/cannot-verify/limits/review questions, 11 research-relevant requirement IDs, 14 unique open issues, all local evidence paths present and nonlinear reference artifact hits 0. SHA-256 `C920A6B02381230D1DB419D73FE767D611B36720D27D6410507BA88C3CA28EEE`.
- return_contract_check: output path, owner status, source/benchmark coverage, downstream gaps, blockers and ownership confirmation present.
- acceptance_evidence_check: all owner and Coordinator Research evidence gates pass; Stage 2 remains `needs-rework` solely for explicit user approval.

### Compact Migration Evidence

- `NSNR-001←001,005,015,017,066–068`; `003←003,040`; `041←041,042`; `074←073–075`
- `NSNR-006←002,006,043–045`; `007←007,052,054`; `069←069`; `070←070`; `008←008,013,071`; `014←014,072`
- `NSNR-046←009,010,046,055–057`; `048←048`; `018←018,060–062`; `063←049–051,063–065`; `016←016,058,059`
- `NSNR-011←011,012,047,029`; `019←019,053`; `020←020`; `021←021–023,025`; `024←024,076,077`
- `NSNR-083←004,083–085,088`; `026←026`; `030←030–032`; `034←034–037`
- Downstream-only: `027,028,033,039,086,087`; removed interview-only record: `038`

## 4. Gate Decision Log and Workflow State

| date | gate | decision | owner evidence | workflow state | next eligible action |
| --- | --- | --- | --- | --- | --- |
| 2026-08-18 | Intake | `in-progress` | 사용자 요청; repository baseline audit | `needs-requirements` | Requirements Agent dispatch 및 반환 검증 |
| 2026-08-18 | Requirements draft | `needs-rework` | `requirements.md` status `draft-needs-user-decision`; Requirement Agent return contract | `needs-user-decision` | `OQ-001`을 사용자에게 질문하고 답변 뒤 Requirement Agent에 bounded revision dispatch |
| 2026-08-18 | Requirements OQ-001 | `in-progress` | 사용자 결정: option 1 `Geometric-only MITC4` | `needs-requirements` | 같은 Requirement Agent가 scope 반영 및 self-audit 수행 |
| 2026-08-18 | Requirements OQ-001 revision | `needs-rework` | revised `requirements.md`; Requirement Agent self-audit; Coordinator traceability check | `needs-user-decision` | `OQ-004` finite-kinematic framework를 사용자에게 질문 |
| 2026-08-18 | Requirements OQ-004 | `in-progress` | 사용자 결정: option 1 `Total Lagrangian` | `needs-requirements` | 같은 Requirement Agent가 initial-configuration 계약 반영 및 self-audit 수행 |
| 2026-08-18 | Requirements OQ-004 revision | `needs-rework` | revised `requirements.md`; Requirement Agent self-audit; Coordinator configuration/state/rollback check | `needs-user-decision` | `OQ-006` Newton variant와 tangent refresh를 사용자에게 질문 |
| 2026-08-18 | Requirements OQ-006 | `in-progress` | 사용자 결정: option 1 `Full Newton–Raphson` | `needs-requirements` | 같은 Requirement Agent가 per-iteration tangent/factorization/solve 계약 반영 및 self-audit 수행 |
| 2026-08-18 | Requirements OQ-006 revision | `needs-rework` | revised `requirements.md`; Requirement Agent self-audit; Coordinator Full Newton event/rollback/determinism check | `needs-user-decision` | `OQ-005` increment control variable을 사용자에게 질문 |
| 2026-08-18 | Requirements OQ-005 | `in-progress` | 사용자 결정: option 1 `Load-factor control` | `needs-requirements` | 같은 Requirement Agent가 scalar load coordinate와 step/load/BC path 계약 반영 및 self-audit 수행 |
| 2026-08-18 | Requirements OQ-005 revision | `needs-rework` | revised `requirements.md`; Requirement Agent self-audit; Coordinator load-factor identity/path/rollback check | `needs-user-decision` | `OQ-009` scalar load-factor path proportionality를 사용자에게 질문 |
| 2026-08-18 | Requirements OQ-009 | `in-progress` | 사용자 결정: option 1 `Single proportional load/BC path` | `needs-requirements` | 같은 Requirement Agent가 proportional load/BC factor와 constraint/equilibrium/rollback 계약 반영 및 self-audit 수행 |
| 2026-08-18 | Requirements OQ-009 revision | `needs-rework` | revised `requirements.md`; Requirement Agent self-audit; Coordinator proportional factor/constraint/equilibrium check | `needs-user-decision` | `OQ-017` increment-size strategy를 사용자에게 질문 |
| 2026-08-18 | Requirements OQ-017 | `in-progress` | 사용자 결정: option 2 `Fixed-size stepping` | `needs-requirements` | 같은 Requirement Agent가 fixed increment/final-shortening/fail-without-retry 계약 반영 및 self-audit 수행 |
| 2026-08-18 | Requirements OQ-017 revision | `needs-rework` | revised `requirements.md`; Requirement Agent self-audit; Coordinator endpoint/order/no-retry check | `needs-user-decision` | `OQ-020` four-value `*STATIC` mapping을 사용자에게 질문 |
| 2026-08-18 | Requirements OQ-020 | `in-progress` | 사용자 결정: option 2 `First-value driven` | `needs-requirements` | 같은 Requirement Agent가 `*STATIC` use/ignore/validation/diagnostic 및 endpoint consistency 반영 |
| 2026-08-18 | Requirements OQ-020 revision | `needs-rework` | revised `requirements.md`; Requirement Agent self-audit; Coordinator mapping/ignored-field warning/input validation check | `needs-user-decision` | `OQ-018` approved `*CLOAD` direction/configuration을 사용자에게 질문 |
| 2026-08-18 | Requirements OQ-018 | `in-progress` | 사용자 결정: option 1 `Dead loads in fixed global directions` | `needs-requirements` | 같은 Requirement Agent가 global-fixed `*CLOAD` magnitude/work/tangent/equilibrium/assembly 계약 반영 |
| 2026-08-18 | Requirements OQ-018 revision | `needs-rework` | revised `requirements.md`; Requirement Agent self-audit; Coordinator 62 requirement/matrix traceability 및 stale/금지범위 check | `needs-user-decision` | `OQ-019` prescribed `*BOUNDARY` total/incremental 의미를 사용자에게 질문 |
| 2026-08-18 | Requirements OQ-019 | `in-progress` | 사용자 결정: option 1 `Total step target` | `needs-requirements` | 같은 Requirement Agent가 absolute target/interpolation, zero/repeated-step, correction/equilibrium/state/source-identity 계약 반영 |
| 2026-08-18 | Requirements OQ-019 revision | `needs-rework` | revised `requirements.md`; Requirement Agent self-audit; Coordinator 65 requirement/matrix traceability, target/correction/rollback 및 stale/금지범위 check | `needs-user-decision` | `OQ-003` nonlinear step cardinality와 propagation 범위를 사용자에게 질문 |
| 2026-08-18 | Requirements OQ-003 | `in-progress` | 사용자 결정: option 1 `Single nonlinear step only` | `needs-requirements` | 같은 Requirement Agent가 single-step fail-closed cardinality, identity, ordering, failure preservation과 CLI selection 계약 반영 |
| 2026-08-18 | Requirements OQ-003 revision | `needs-rework` | revised `requirements.md`; Requirement Agent self-audit; Coordinator 68 requirement/matrix traceability, cardinality/identity/order/failure-preservation 및 stale/금지범위 check | `needs-user-decision` | `OQ-007` mandatory convergence quantity set을 사용자에게 질문 |
| 2026-08-18 | Requirements OQ-007 quantity set | `in-progress` | 사용자 결정: option 1 `Residual and correction` | `needs-requirements` | 같은 Requirement Agent가 two mandatory gates, same-state/order, free-DOF, nonfinite/max-iteration 및 atomic state 계약 반영 |
| 2026-08-18 | Requirements OQ-007 quantity revision return | `needs-rework` | revised `requirements.md`; 72/72 traceability와 quantity contract는 통과했으나 next question이 사용자 지정 norm/normalization/tolerance 대신 line search를 제시함 | `needs-requirements` | 같은 Requirement Agent에 `next-question-routing-mismatch` bounded correction 1회 dispatch |
| 2026-08-18 | Requirements OQ-007 routing correction | `needs-rework` | OQ-007 closed/OQ-021 sole pending-next; 72/72 traceability와 accepted quantity/failure/energy-exclusion 보존; Coordinator stale/금지범위 check | `needs-user-decision` | `OQ-021` convergence norm/normalization/threshold contract를 사용자에게 질문 |
| 2026-08-18 | Requirements OQ-021 nonzero-scale contract | `in-progress` | 사용자 결정: channel-separated normalized infinity gates; four relative thresholds=`1e-2`; zero-scale 미결정 | `needs-requirements` | 같은 Requirement Agent가 free-DOF channel/same-trial scale/fresh-correction identity를 반영하고 zero-scale만 다음 질문으로 분리 |
| 2026-08-18 | Requirements OQ-021 nonzero-scale revision | `needs-rework` | revised `requirements.md`; 72/72 traceability, four `1e-2` channels, same-trial/fresh-solve scale, logical-AND/stable-order 및 sole pending-next 검증 | `needs-user-decision` | OQ-021 zero-denominator policy와 필요한 absolute thresholds를 사용자에게 질문 |
| 2026-08-18 | Requirements OQ-021 zero-scale policy partial decision | `in-progress` | 사용자 결정: channel-specific absolute fallback; exact four channel thresholds 미제공 | `needs-requirements` | 같은 Requirement Agent가 policy만 반영하고 four exact values/unit dimensions를 sole pending-next로 유지 |
| 2026-08-18 | Requirements OQ-021 zero-scale partial revision | `needs-rework` | revised `requirements.md`; 72/72 traceability, own-channel fallback, common floor/tolerance reuse absence와 four value/dimension request 검증 | `needs-user-decision` | force, force·length, length, dimensionless-rotation exact thresholds 네 값을 사용자에게 요청 |
| 2026-08-18 | Requirements OQ-021 final thresholds | `in-progress` | 사용자 결정: each zero-scale threshold numeric literal=`1e-3` with distinct model-consistent dimensions | `needs-requirements` | 같은 Requirement Agent가 OQ-021을 닫고 exact values/dimensions/pass rule/unit semantics/stale text를 전 구간 정렬 |
| 2026-08-18 | Requirements OQ-021 final revision | `needs-rework` | revised `requirements.md`; 72/72 traceability, OQ-021 closed/OQ-008 sole pending-next, four typed `1e-3`, nonzero `1e-2`, unit/fallback exclusion 검증 | `needs-user-decision` | OQ-008 line-search 지원 범위를 사용자에게 질문 |
| 2026-08-18 | Requirements OQ-008 | `in-progress` | 사용자 결정: option 1 `No line search` | `needs-requirements` | 같은 Requirement Agent가 full-correction direct application과 line-search/damping/merit/reduction/fallback exact absence를 반영하고 max iteration을 OQ-022로 분리 |
| 2026-08-19 | Requirements OQ-008 revision | `needs-rework` | user decision date 2026-08-18 유지; revised `requirements.md`; 72/72, OQ-008 closed/OQ-022 sole pending-next, full-correction identity와 line-search lifecycle exact absence 검증 | `needs-user-decision` | OQ-022 maximum Newton iteration count를 사용자에게 질문 |
| 2026-08-19 | Requirements OQ-022 | `in-progress` | 사용자 결정: attempted increment당 fixed maximum Newton iterations=`100` | `needs-requirements` | 같은 Requirement Agent가 iteration `1..100`, pass-at-100, fail-after-100 및 post-exhaustion exact absence를 반영 |
| 2026-08-19 | Requirements OQ-022 revision | `needs-rework` | revised `requirements.md`; 72/72, OQ-022 closed/OQ-010 sole pending-next, pass-at-99/100, fail-after-100와 post-event absence 검증 | `needs-user-decision` | OQ-010 finite-rotation/director state representation을 사용자에게 질문 |
| 2026-08-19 | Requirements OQ-010 | `in-progress` | 사용자 결정: `Incremental rotation vector + committed triad` | `needs-requirements` | 같은 Requirement Agent가 external DOF/incremental correction/committed-trial triad/multiplicative update/rollback과 downstream map gaps를 반영 |
| 2026-08-19 | Requirements OQ-010 revision | `needs-rework` | revised `requirements.md`; 75/75, OQ-010 closed/OQ-012 sole pending-next, triad/director invariants, exact rollback과 unresolved exact-map gaps 검증 | `needs-user-decision` | OQ-012 authoritative HDF5 accepted-frame/iteration-history 범위를 사용자에게 질문 |
| 2026-08-20 | Requirements OQ-012 | `in-progress` | user decision date 2026-08-19 유지: every committed increment frame, no trial history | `needs-requirements` | 같은 Requirement Agent가 accepted-commit↔frame 1:1/order/factor1 및 trial/failed/partial-final absence를 반영 |
| 2026-08-20 | Requirements OQ-012 revision | `needs-rework` | revised `requirements.md`; 75/75, OQ-012 closed/OQ-011 sole pending-next, accepted-frame bijection/order/factor1, absence/preservation와 factor0/schema gap 분리 검증 | `needs-user-decision` | OQ-011 runtime Newton diagnostic granularity를 사용자에게 질문 |
| 2026-08-21 | Requirements OQ-011 granularity/content | `in-progress` | 사용자 결정: every entered iteration exactly one structured runtime summary | `needs-requirements` | 같은 Requirement Agent가 complete/early-failure content, nonfabrication/order/runtime-only absence를 반영하고 transport/exit mapping을 분리 |
| 2026-08-21 | Requirements OQ-011 granularity revision | `needs-rework` | revised `requirements.md`; 77/77, OQ-011 closed/OQ-025 sole pending-next, completed/early-failure/exhaustion cardinality, nonfabrication와 HDF5/sidecar/reference absence 검증 | `needs-user-decision` | OQ-025 runtime-summary serialization format을 사용자에게 질문 |
| 2026-08-21 | Requirements OQ-025 | `in-progress` | 사용자 결정: `JSON Lines runtime records` | `needs-requirements` | 같은 Requirement Agent가 summary↔JSON-object↔line cardinality, finite/parseable/nonaggregation과 runtime-only absence를 반영하고 exact schema/transport/exit gaps를 분리 |
| 2026-08-21 | Requirements OQ-025 revision | `needs-rework` | revised `requirements.md`; 79/79, OQ-025 closed/OQ-026 sole pending-next, strict JSON Lines cardinality/finite/nonaggregation/order 및 projection absence 검증 | `needs-user-decision` | OQ-026 destination/buffering/failed-run delivery lifecycle을 사용자에게 질문 |
| 2026-08-21 | Requirements OQ-026 | `in-progress` | 사용자 결정: stderr record별 immediate emit+flush | `needs-requirements` | 같은 Requirement Agent가 flush-before-next/return, controlled failure delivery, stable/no-interleaving/no-bulk/no-stdout/projection absence를 반영 |
| 2026-08-21 | Requirements OQ-026 revision | `needs-rework` | revised `requirements.md`; 81/81, OQ-026 closed/OQ-028 sole pending-next, stderr emit/flush cardinality/order/delivery와 prohibited path absence 검증 | `needs-user-decision` | OQ-028 unavailable-field JSON schema를 사용자에게 질문 |
| 2026-08-21 | Requirements OQ-028 | `in-progress` | 사용자 결정: field omission + explicit not-evaluated identity list; low-risk defaults may auto-apply | `needs-requirements` | 같은 Requirement Agent가 omission/list nonfabrication을 반영하고 next item risk classification을 반환 |
| 2026-08-21 | Requirements OQ-028 revision | `needs-rework` | revised `requirements.md`; 82/82, OQ-028 closed/OQ-029 sole pending-next, omission-list bijection/reason/nonfabrication 검증; OQ-029 substantive 분류 | `needs-user-decision` | OQ-029 stderr write/flush failure policy를 사용자에게 질문 |
| 2026-08-21 | Requirements JSON policy scope reversal | `in-progress` | 사용자 요청: JSON 정책 철회, simple plain-text analysis log; destination은 substantive ambiguity | `needs-requirements` | 같은 Requirement Agent가 JSON-specific decisions/requirements를 retire하고 OQ-011을 보존한 뒤 stderr text 대 `.txt` file direct confirmation을 반환 |
| 2026-08-21 | Requirements JSON policy retirement rework | `needs-rework` | revised `requirements.md`; 82→77/77, retired NSNR-078..082, superseded/retired OQ-025..032, current JSON shall/Matrix 0, OQ-011 보존 검증 | `needs-user-decision` | OQ-033 stderr text 대 actual `.txt` file을 direct confirmation |
| 2026-08-21 | Requirements OQ-033 ambiguous response | `needs-rework` | 사용자 원문 verbatim evidence, OQ-033 `pending-clarification`/sole pending-next, 77/77 exact traceability와 금지범위 변경 0건 확인 | `needs-user-decision` | solver-only stderr와 external one-file redirect 의미를 direct yes/no로 확인 |
| 2026-08-21 | Requirements OQ-033 solver-managed file partial decision | `needs-rework` | Solver-managed single `.txt`, external redirect superseded, OQ-033 `pending-clarification`/sole pending-next, 77/77 exact traceability와 금지범위 변경 0건 확인 | `needs-user-decision` | same iteration summary의 file-only 대 file+stderr duplication을 direct confirmation |
| 2026-08-21 | Requirements OQ-033 file-only/no-duplication approval | `needs-rework` | OQ-033 closed; stderr duplicate 0; OQ-035 `analysis.log` sibling unapproved sole pending-next; repository evidence; 77/77 exact traceability와 금지범위 변경 0건 | `needs-user-decision` | OQ-035 filename/location direct confirmation |
| 2026-08-21 | Requirements input-stem output naming scope clarification | `needs-rework` | Exact proposal를 `proposed/pending-scope`로 기록, current shall/Matrix hit 0, OQ-035 sole pending-next, 77/77 exact traceability와 금지범위 변경 0건 | `needs-user-decision` | nonlinear-static-only 대 repository-wide scope direct confirmation |
| 2026-08-21 | Requirements repository-wide output scope approval | `in-progress` | 사용자 승인: all analyses input-directory stem outputs, remove `--output`; current one-input/explicit-output CLI/tests/ARCHITECTURE/ADR conflict read-only audit | `needs-requirements` | cross-procedure requirements와 global-doc handoff를 기록하고 removed-option compatibility를 sole pending-next로 분리 |
| 2026-08-21 | Requirements repository-wide output revision return | `needs-rework` | 77→80/80, NSNR-083..085, OQ-035 closed/OQ-038 sole pending-next, retired-ID reuse 0; NSNR-085 failure-atomicity scope ambiguity 발견 | `needs-requirements` | same Requirement Agent wording-only correction 후 evidence 재검증 |
| 2026-08-21 | Requirements failure-atomicity boundary correction | `needs-rework` | NSNR-085 legacy HDF5 preservation only; new result/log lifecycle OQ-037; 80/80 exact traceability; OQ-038 sole pending-next; forbidden changes 0 | `needs-user-decision` | OQ-038 strict removal/no-alias direct confirmation |
| 2026-08-22 | Requirements OQ-038 strict removal approval | `needs-rework` | OQ-038 closed; exact failure stage/code/diagnostic/output absence; OQ-036 unapproved sole pending-next; 80/80 exact traceability와 forbidden changes 0 | `needs-user-decision` | OQ-036 asymmetric lifecycle direct confirmation |
| 2026-08-22 | Requirements OQ-036 independent lifecycle approval | `needs-rework` | OQ-036 closed; approved log/HDF5 lifecycle and zero pair atomicity; OQ-037 unapproved sole pending-next; 80/80 exact traceability와 forbidden changes 0 | `needs-user-decision` | OQ-037 grouped log-I/O fail-closed direct confirmation |
| 2026-08-22 | Requirements OQ-037 grouped fail-closed approval | `needs-rework` | OQ-037 closed; NSNR-086 operation-stage/preservation/prohibited-event record; 81/81 exact traceability와 forbidden changes 0 | `needs-requirements` | OQ-034 low-risk auto-default revision |
| 2026-08-22 | Requirements OQ-037 revision evidence | `needs-rework` | OQ-037 closed, NSNR-086 added, 81/81 exact traceability, OQ-034 low-risk/OQ-039 first substantive classification | `needs-requirements` | OQ-034 auto-default bounded revision |
| 2026-08-22 | Requirements OQ-034 auto-default revision | `needs-rework` | OQ-034 closed, NSNR-087 added, 82/82 exact traceability, content/authority scope unchanged, OQ-039 sole pending-next | `needs-user-decision` | OQ-039 stem/path identity option selection |
| 2026-08-22 | Requirements OQ-039 lexical identity approval | `in-progress` | 사용자 option 1 approval; concurrency/locking remains substantive | `needs-requirements` | OQ-039 close, open-item audit, same-output concurrency question framing |
| 2026-08-22 | Requirements compact-pruning proposal | `needs-rework` | Read-only 24/24 proposal; 360–390 claim과 section sum 불일치, asymmetric output lifecycle mapping 보강 필요; file edits 0 | `needs-requirements` | Same Requirement Agent read-only correction |
| 2026-08-22 | Requirements compact-pruning corrected design | `needs-rework` | Exact 363-line budget, 24 canonical records/24 Matrix, approved semantic-loss 0, asymmetric log/HDF5 lifecycle explicit, Stage-1 remaining questions 0; baseline unchanged 2,909/83/83/40 | `needs-user-decision` | Compact sectioned-design 한 번의 명시적 사용자 승인 |
| 2026-08-22 | Requirements compact rewrite approval | `in-progress` | User explicitly approved 24-record/363-line-target design and permanent essential-decision-only Requirement Agent discipline | `needs-requirements` | Same Requirement Agent compact rewrite and self-audit |
| 2026-08-22 | Requirements compact rewrite return | `needs-rework` | 395 lines, exact 24↔24, no OQ/trivia/questions; Coordinator found NSNR-083 retained exit 2/pre-output but omitted approved pre-input/pre-Analysis precedence and no-alias/deprecation | `needs-requirements` | Same Requirement Agent NSNR-083 wording-only correction |
| 2026-08-22 | Requirements NSNR-083 correction return | `needs-rework` | 395 lines, exact 24↔24, NSNR-083 summary/record/Matrix preserve pre-input/pre-Analysis/pre-result-log exit 2 and no alias/deprecation; duplicate/missing/orphan/questions/placeholders/forbidden changes 0 | `needs-user-decision` | Present compact Stage-1 artifact for explicit user approval |
| 2026-08-23 | Requirements explicit user approval | `passed` | User explicitly approved `requirements.md`; owner and Coordinator evidence already passed | `research-in-progress` | Dispatch Research Agent for Stage 2 evidence |
| 2026-08-23 | Research Agent return and Coordinator audit | `needs-rework` | `research.md` owner pass; Coordinator verified 10 sections, S1–S17, 12 complete benchmark candidates, 11 requirement IDs, 14 unique open issues, local evidence existence, nonlinear stored reference hits 0 and forbidden changes 0 | `needs-user-decision` | Present Stage-2 artifact for explicit user approval |
| 2026-08-23 | Research explicit user approval | `passed` | User explicitly approved `research.md`; Research Agent and Coordinator evidence already passed; approved artifact SHA-256 `C920A6B02381230D1DB419D73FE767D611B36720D27D6410507BA88C3CA28EEE` | `needs-formulation` | Dispatch Formulation Agent for bounded Stage 3 evidence |
| 2026-08-23 | Formulation dispatch attempt 1 | `in-progress` | Approved Stage-1/2 baselines and project contracts audited; bounded package requires O-ROT/O-MAP/O-DRILL/O-MOM/O-BC closure without downstream contract changes | `needs-formulation` | Await Formulation Agent return and independently audit Stage-3 evidence |

- current_dispatch: `stage-3-formulation-attempt-1`
- current_workflow_state: `needs-formulation`
- next_gate_requires_user_approval: `false` (owner evidence audit 선행)

## 5. Risk, Blocker, and User-Decision Register

| id | type | description | owner | status |
| --- | --- | --- | --- | --- |
| RISK-001 | architecture | 기존 `LinearStaticAnalysis` private lifecycle은 단일 factorization/substitution과 final frame만 소유하므로 nonlinear increment/iteration/state commit을 삽입하면 ADR 경계를 위반한다. | `coordinator-agent` routing | open |
| RISK-002 | scope | `Newton–Raphson`은 solution algorithm이고 geometric/material/contact nonlinearity 범위를 단독으로 결정하지 않는다. | `requirement-agent` | mitigated by DECISION-001 |
| RISK-003 | contract | 현재 `Element`는 displacement-dependent residual/consistent tangent/trial state 계약이 없고 `AnalysisState`는 nonlinear history를 소유하지 않는다. | downstream formulation/architecture gates | open |
| RISK-004 | input | 현재 `NLGEOM=YES`는 `unsupported-nonlinear-geometry`로 거부되고 `*STATIC` 네 값은 provenance로만 보존된다. | downstream requirements/I/O gates | open |
| RISK-005 | verification | exact nonlinear reference artifacts와 path-dependent blocking quantities가 아직 지정되지 않았다. | downstream numerical-review gate | open |
| DECISION-001 | user decision | 첫 release는 materially linear + geometrically nonlinear MITC4로 고정한다. Material-only와 combined material/geometric nonlinearity는 이 release 범위 밖이다. | user via Coordinator | closed |
| DECISION-002 | user decision | First-release geometric-nonlinear MITC4 kinematic framework는 initial configuration 기준 `Total Lagrangian`으로 고정한다. Updated Lagrangian과 corotational 의미는 이 release 범위 밖이다. | user via Coordinator | closed |
| DECISION-003 | user decision | Newton variant는 `Full Newton–Raphson`으로 고정한다. 매 iteration의 current trial/candidate state에서 residual과 algorithmically consistent tangent를 재평가하고, 그 tangent로 새 factorization/solve를 수행한다. Modified Newton과 adaptive refresh는 out-of-scope다. | user via Coordinator | closed |
| DECISION-004 | user decision | First-release nonlinear increment control은 하나의 scalar load coordinate/load factor로 approved load/BC path를 진행하는 `Load-factor control`로 고정한다. Controlled-displacement와 arc-length/path-following control은 out-of-scope다. | user via Coordinator | closed |
| DECISION-005 | user decision | 모든 approved `*CLOAD`와 nonzero prescribed `*BOUNDARY` target은 같은 dimensionless scalar load factor로 step-start 값에서 target까지 비례 진행한다. Fixed step-start BC와 independent/non-proportional amplitude/path는 out-of-scope다. | user via Coordinator | closed |
| DECISION-006 | user decision | First-release는 approved fixed load-factor increment size를 반복하고 factor 1에 정확히 도달하도록 마지막 increment만 작게 조정하는 `Fixed-size stepping`으로 고정한다. Automatic growth, cutback/retry와 explicit schedule은 out-of-scope며 attempted increment failure는 재시도 없이 analysis failure다. | user via Coordinator | closed |
| DECISION-007 | user decision | Nonlinear four-value `*STATIC`은 first positive value만 fixed load-factor increment로 사용하고 second/period는 exact supported endpoint `1`을 요구하며 positive minimum/maximum은 입력 호환성을 위해 수용하지만 runtime stepping에는 사용하지 않는 `First-value driven` mapping으로 고정한다. Strict tuple과 single-value form은 out-of-scope다. | user via Coordinator | closed |
| DECISION-008 | user decision | First-release approved `*CLOAD` force/moment component directions는 initial/current deformation과 무관하게 fixed global frame에 유지되고 common scalar factor로 magnitude만 비례 진행하는 dead-load semantics로 고정한다. Follower nodal loads, selectable dual semantics, external-load geometric tangent/follower work는 out-of-scope다. | user via Coordinator | closed |
| DECISION-009 | user decision | Nonzero prescribed `*BOUNDARY` input value는 factor 1의 absolute global-DOF `Total step target`이며 step-start committed value에서 target까지 common scalar factor로 보간한다. Incremental delta와 selectable dual semantics는 out-of-scope다. | user via Coordinator | closed |
| DECISION-010 | user decision | First release는 입력당 exactly one supported geometrically nonlinear static step만 허용하고 no-prior-history baseline에서 factor 0→1을 수행한다. Multiple nonlinear steps, mixed linear/nonlinear steps, cross-step state/load/BC propagation과 procedure transition은 out-of-scope/fail-closed다. | user via Coordinator | closed |
| DECISION-011 | user decision | First-release increment acceptance는 free-DOF equilibrium residual과 Newton correction의 두 mandatory quantity가 각각 승인 gate를 모두 통과해야 한다. Energy convergence는 diagnostic/mandatory가 아닌 out-of-scope다. Norm, normalization과 tolerance는 별도 결정으로 남긴다. | user via Coordinator | closed |
| DECISION-012 | user decision | Four channel-separated infinity gates의 nonzero-scale relative threshold는 각각 `1e-2`다. Zero denominator에는 own-channel absolute fallback을 적용하며 네 numeric literal은 모두 `1e-3`: force residual은 model-consistent force, moment residual은 force·length, translational correction은 length, rotational correction은 later-approved convention의 dimensionless rotation parameter다. `.inp` 단위 추론/변환은 하지 않는다. | user via Coordinator | closed |
| DECISION-013 | user decision | First release는 `No line search`다. 각 successful fresh tangent correction solve의 full correction을 damping/backtracking/trial-step reduction 없이 next candidate에 그대로 적용하며 merit/acceptance/reduction loop, selectable input과 fallback은 out-of-scope/fail-closed다. | user via Coordinator | closed |
| DECISION-014 | user decision | Attempted increment당 maximum Newton iteration count는 product-fixed `100`이다. Entered iteration은 `1..100`; iteration 100 gate pass는 accept 가능하고 fail 시 iteration 101/candidate/retry/cutback 없이 immediate failure 및 prior committed state/result preservation을 적용한다. | user via Coordinator | closed |
| DECISION-015 | user decision | MITC4 Newton solve는 dimensionless incremental rotation-vector correction을 만들고 authoritative rotational state는 orthonormal right-handed committed triad `Q`이며 director는 third axis다. Separate trial triad를 사용하고 large rotation은 multiplicative composition으로 갱신한다. Exact map/side/frame/parameterization/re-orthonormalization/drilling/derivatives는 downstream gap이다. | user via Coordinator | closed |
| DECISION-016 | user decision | Successful analysis의 authoritative `results.h5`는 each committed nonlinear increment마다 exactly one accepted frame을 stable accepted-factor order로 저장하고 factor-1 frame을 포함한다. Trial/failed/duplicate/missing/partial-final history는 없으며 pre-existing valid final을 exact 보존한다. Exact schema와 factor-0 frame 여부는 downstream gap이다. | user via Coordinator | closed |
| DECISION-017 | user decision | Every entered Newton iteration은 exactly one deterministic structured runtime summary를 낸다. Complete gate는 four-channel identities/norms/branch/threshold/pass/combined transition을 포함하고 early failure는 last-completed/failing stage와 later fields absent/not-evaluated를 기록한다. 이는 diagnostic-only이며 HDF5/sidecar/authoritative/reference quantity가 아니다. Transport/exit mapping은 별도 미결정이다. | user via Coordinator | closed |
| DECISION-018 | superseded user decision | JSON Lines serialization family 결정은 DECISION-023 scope reversal로 current contract에서 retire되며 historical evidence로만 남는다. | user via Coordinator | closed |
| DECISION-019 | superseded user decision | JSON stderr exactly-once emit/flush lifecycle 결정은 DECISION-023 scope reversal로 current contract에서 retire되며 historical evidence로만 남는다. | user via Coordinator | closed |
| DECISION-020 | superseded user decision | JSON field-omission/not-evaluated-list 결정은 DECISION-023 scope reversal로 current contract에서 retire되며 historical evidence로만 남는다. | user via Coordinator | closed |
| DECISION-021 | user operating policy | 물리 결과·수치 거동·public compatibility에 실질 영향 없는 serialization notation/key ordering/diagnostic formatting 등 low-risk 기본 결정은 recommended option을 자동 적용한다. Formulation/Newton/state/tolerance/load-BC/input/failure-rollback/HDF5 authoritative/public compatibility/reference acceptance는 계속 한 번에 하나씩 인터뷰한다. | user via Coordinator | closed |
| DECISION-022 | retired pending decision | JSON stderr write/flush failure policy는 DECISION-023 scope reversal로 선택 없이 retire되었다. | user via Coordinator | closed |
| DECISION-023 | user scope reversal | JSON-specific runtime log decisions와 파생 contracts를 철회하고 serialization-independent OQ-011 granularity를 보존한 simple plain-text analysis log로 재설계한다. Destination은 stderr text 대 actual `.txt` file의 substantive user decision으로 남긴다. | user via Coordinator | closed |
| DECISION-024 | user decision | Solver directly creates exactly one separate plain-text analysis-log file. Per-iteration summaries are file-only; stderr contains log open/write/close fatal diagnostic and final analysis failure summary only, with exact zero per-iteration duplication. External redirect and file+stderr duplication are excluded. Filename/location, overwrite and failure atomicity remain separate questions. | user via Coordinator | closed |
| DECISION-025 | user decision | Repository-wide architectural direction approved: all existing/future analyses use input-directory `<filename>.inp -> <filename>_results.h5` and `<filename>_log.txt`, and `--output` is removed. This requires later approved sectioned-design changes to ARCHITECTURE/ADR and cross-procedure regression evidence; no implementation/global-doc change is claimed now. | user via Coordinator | closed |
| DECISION-026 | user decision | Every invocation containing `--output`, including the formerly valid explicit path form, fails before input parsing/Analysis construction/result-log creation with exact exit 2 and one ordered `cli-usage` stderr diagnostic. No compatibility alias or deprecation window. | user via Coordinator | closed |
| DECISION-027 | user decision | Independent asymmetric lifecycle: current-run log replaces/truncates old log at invocation start and persists on success/failure; HDF5 uses sibling candidate and replaces final only after success, preserving prior valid final on failure; no cross-file pair atomicity. | user via Coordinator | closed |
| DECISION-028 | user decision | Log-I/O grouped fail-closed policy: pre-analysis abort on create/open/truncate failure; immediate abort on write/flush; close failure blocks result commit; best-effort one fatal stderr diagnostic attempt, prior HDF5 and retained log prefix preservation, no retry/fallback/continue/result commit. | user via Coordinator | closed |
| DECISION-029 | coordinator auto-default | OQ-034 low-risk plain-text representation/ordering: UTF-8 no BOM, one physical tab-separated `label=value` line per entered iteration, fixed semantic field/channel order, explicit `not-evaluated(reason)`, locale-independent finite round-trip numerics, embedded control/backslash escaping. No physics/numerics/path/state/authority change. | Coordinator under DECISION-021 | closed |
| DECISION-030 | user decision | OQ-039 user-addressed lexical identity: resolve relative input against invocation CWD, lexically normalize `.`/`..`, do not resolve symlink/junction targets, accept final `.inp` case-insensitively, remove only the last extension and preserve preceding dots/basename case; output beside normalized user-addressed path. | user via Coordinator | closed |
| DECISION-031 | superseded proposal | Same-derived-output concurrent invocation ownership의 fine-grained OQ-040 interview는 사용자 process correction으로 중단했다. 승인된 정책은 없으며 필요한 convention은 I/O/Planning owner가 repository evidence로 정한다. | user via Coordinator | closed |
| DECISION-032 | user process decision | `requirements.md`를 핵심 Stage-1 계약으로 압축하고 OQ chronology, diagnostic/path/concurrency trivia와 반복 handoff를 제거한다. Minor details는 downstream specialist convention/evidence로 정하며 approved scope/physics/tolerance/public compatibility를 바꿀 때만 사용자 결정을 다시 요청한다. | user via Coordinator | closed |
| DECISION-033 | design approval | Target 363 lines, 24 canonical requirements와 24-row Matrix, approved semantic-loss 0의 compact rewrite design. | user via Coordinator | closed |
| DECISION-034 | user process decision | Requirement Agent는 approved physics/scope/tolerance/authoritative-output/public compatibility를 바꾸는 essential decision만 사용자에게 묻고, specialist detail은 owning downstream stage가 repository evidence와 conventional FEM practice로 정한다. Equivalence claim은 금지한다. | user via Coordinator; `.codex/agents/requirement-agent.toml` | closed |

## 6. Rework-Loop Control and Stop Condition

- normalized_failure_attempts: `requirements-next-question-routing-mismatch`: 1; `requirements-output-failure-atomicity-scope-ambiguity`: 1; `requirements-compact-public-contract-omission`: 1
- automatic_rework_limit: 동일 normalized failure classification `2`회
- correction_agent_policy: 명확한 implementation failure는 먼저 `implementation-agent`에 반환하고, 반복되거나 원인이 불명확할 때만 `correction-agent`를 dispatch한다.
- stop_condition: 동일 classification이 두 번이면 자동 rework를 중단하고 workflow를 `needs-user-decision` 또는 `blocked`로 전환한다.

## 7. Final Workflow Closure

- closure_status: `not-eligible`
- required_evidence: `docs/nonlinear-static-newton-raphson/release.md`의 `ready-for-release` recommendation
- closure_record: 없음

## 8. No-Change Assertion

- source_code: 변경 없음
- tests: 변경 없음
- CMake: 변경 없음
- reference_artifacts: 생성·수정·rename 없음
- tolerance_policies: 변경 없음
- phase_files: 생성 없음
- Harness: 실행하지 않음
- feature_documents: `coordination.md`, `requirements.md`, `research.md`만 생성됨