{
  "project": "FESA Structural Solver",
  "phase": "linear-static-3d-euler-beam",
  "steps": [
    {
      "step": 0,
      "name": "requirements-baseline",
      "status": "completed",
      "started_at": "2026-08-09T01:35:55+0900",
      "summary": "docs/requirements/linear-static-3d-euler-beam.md에 44개 연속 shall 요구조건과 검증 행렬을 작성하고 2026-08-09 amendment의 approved B33 baseline을 고정함",
      "completed_at": "2026-08-09T01:53:04+0900"
    },
    {
      "step": 1,
      "name": "research-evidence",
      "status": "completed",
      "started_at": "2026-08-09T01:54:38+0900",
      "summary": "FEM wiki 근거로 B31/B33, Hermite·Gauss, general beam section/output, analytical benchmark, SPD·assembly·reference 적용 한계를 정리한 research brief를 작성함",
      "completed_at": "2026-08-09T02:12:54+0900"
    },
    {
      "step": 2,
      "name": "formulation-alignment",
      "status": "completed",
      "started_at": "2026-08-09T02:14:26+0900",
      "summary": "기존 3D Euler–Bernoulli strong/weak form과 DOF·부호·2점 Gauss·12×12 강성 의미를 보존하면서 B33 n1/section/geometry 및 recovery/tolerance 계약을 승인 V0 요구조건·연구에 정렬함",
      "completed_at": "2026-08-09T02:33:50+0900"
    },
    {
      "step": 3,
      "name": "numerical-review",
      "status": "completed",
      "started_at": "2026-08-09T02:33:50+0900",
      "summary": "DOF·theta_y=-w'·end-action 부호, 4x12 B/12x12 강성·2-point Gauss·rank 6/rigid modes·좌표변환·line-load·partition/SPD를 독립 검토하고 pass-for-implementation-planning 판정과 11개 테스트 권고를 기록함",
      "completed_at": "2026-08-09T02:52:47+0900"
    },
    {
      "step": 4,
      "name": "io-contract",
      "status": "completed",
      "started_at": "2026-08-09T02:52:47+0900",
      "summary": "승인된 Abaqus B33 keyword subset, stable source identity, HDF5 schema v0와 legacy CSV normalization/component-scale tolerance 계약을 정의함",
      "completed_at": "2026-08-09T03:16:25+0900"
    },
    {
      "step": 5,
      "name": "reference-model-contract",
      "status": "completed",
      "started_at": "2026-08-09T03:16:25+0900",
      "summary": "code·analytical·B33 reference 검증을 분리하고 analytical/invalid model inventory와 read-only legacy 4-file provenance·schema·tolerance coverage를 계약화함",
      "completed_at": "2026-08-09T03:29:44+0900"
    },
    {
      "step": 6,
      "name": "implementation-plan",
      "status": "completed",
      "started_at": "2026-08-09T03:29:45+0900",
      "summary": "승인 upstream 계약을 Step 7–24의 exact 파일·시그니처·GoogleTest RED/GREEN/VERIFY·CMake/CTest·44개 요구조건 traceability와 read-only B33 comparison handoff로 매핑한 ready-for-implementation 계획을 작성함",
      "completed_at": "2026-08-09T03:53:12+0900"
    },
    {
      "step": 7,
      "name": "cmake-test-foundation",
      "status": "completed",
      "started_at": "2026-08-09T03:53:12+0900",
      "summary": "C++17 MSVC x64 Debug CMake foundation, normalized MKL/TBB/HDF5 targets, GoogleTest BuildInfo 2-test suite와 누적 implementation report를 RED/GREEN/VERIFY로 구축함",
      "completed_at": "2026-08-09T04:44:04+0900"
    },
    {
      "step": 8,
      "name": "core-diagnostics",
      "status": "completed",
      "started_at": "2026-08-09T10:51:14+0900",
      "summary": "stable source identity, deterministic diagnostic ordering, categorized Status와 value/error-exclusive Result를 TDD로 구현하고 MSVC x64 Debug 5-test full suite를 검증함",
      "completed_at": "2026-08-09T10:54:29+0900"
    },
    {
      "step": 9,
      "name": "dense-math-adapters",
      "status": "completed",
      "started_at": "2026-08-09T11:13:43+0900",
      "summary": "contiguous double Vector와 row-major Matrix의 MKL CBLAS copy/dot/norm/scale/axpy/GEMV/GEMM adapter를 TDD로 구현하고 DenseMath 2/2·MSVC x64 Debug full 7/7·public-header leak 0건을 검증함",
      "completed_at": "2026-08-09T11:35:31+0900"
    },
    {
      "step": 10,
      "name": "domain-model",
      "status": "completed",
      "started_at": "2026-08-09T11:49:47+0900",
      "summary": "SourceLocation을 포함한 semantic records와 static timing, part/instance source-index mapping, warnings/source identity를 소유하는 effectively immutable Domain을 TDD로 구현하고 DomainModel 3/3 및 전체 10/10을 검증함",
      "completed_at": "2026-08-09T12:07:11+0900"
    },
    {
      "step": 11,
      "name": "inp-syntax-parser",
      "status": "completed",
      "started_at": "2026-08-09T15:06:01+0900",
      "completed_at": "2026-08-09T15:19:17+0900",
      "summary": "keyword/parameter name만 uppercase canonicalize하고 raw value/data/originalLine, normalized source path, exact-byte fnv1a64 identity와 file/line 위치를 보존하는 syntax-only reader를 TDD로 구현해 InpSyntax 4/4, 전체 14/14 및 legacy 30-block read-only parse를 검증함"
    },
    {
      "step": 12,
      "name": "inp-domain-mapping",
      "status": "completed",
      "started_at": "2026-08-09T15:27:22+0900",
      "completed_at": "2026-08-09T16:15:17+0900",
      "summary": "승인 B33 단일 static-step Abaqus subset을 immutable Domain으로 mapping하고 identity instance·stable source/internal ID·set/target expansion·material/section·model/step BC/CLOAD·warning no-op와 exact rejection portfolio를 TDD로 구현해 InpDomainMapping 5/5 및 전체 19/19를 검증함"
    },
    {
      "step": 13,
      "name": "analysis-model",
      "status": "completed",
      "started_at": "2026-08-09T16:36:20+0900",
      "completed_at": "2026-08-09T16:50:12+0900",
      "summary": "단일 static step의 Domain을 비소유 참조로 유지하고 active element·BC·load stable index와 reachable material/section의 오름차순 dedup view를 TDD로 구현해 address identity·불변성·missing/multiple-step diagnostic, AnalysisModel 3/3 및 전체 22/22를 검증함"
    },
    {
      "step": 14,
      "name": "dof-manager",
      "status": "completed",
      "started_at": "2026-08-09T16:56:29+0900",
      "completed_at": "2026-08-09T17:10:22+0900",
      "summary": "절점당 6-DOF full/free/constrained numbering, validated boundary target expansion과 prescribed dc, 12-DOF scatter 및 sorted-unique full CSR pattern을 DofManager 단독 소유로 TDD 구현해 DofManager 4/4와 전체 26/26을 검증함"
    },
    {
      "step": 15,
      "name": "analysis-state",
      "status": "completed",
      "started_at": "2026-08-09T17:19:21+0900",
      "completed_at": "2026-08-09T17:31:51+0900",
      "summary": "fullDofCount 크기의 독립 zero-initialized displacement/external/internal/residual/reaction과 StepFrameIdentity·stable endpoint/Gauss/S11 rows를 TDD 구현하고 velocity·acceleration·temperature·iteration/nonlinear state 미할당, AnalysisState 3/3 및 전체 29/29를 검증함"
    },
    {
      "step": 16,
      "name": "euler-beam-element",
      "status": "completed",
      "started_at": "2026-08-09T17:38:34+0900",
      "completed_at": "2026-08-09T18:04:40+0900",
      "summary": "Implemented the exact two-node 3D Euler-Bernoulli beam kernel with reviewed local signs, two-point Gauss stiffness and line loading, strict geometry/property validation, transform, end/Gauss/S11 recovery, and 10/10 targeted plus 39/39 full tests passing."
    },
    {
      "step": 17,
      "name": "parallel-for-tbb",
      "status": "completed",
      "started_at": "2026-08-09T18:41:51+0900",
      "completed_at": "2026-08-09T18:52:20+0900",
      "summary": "Backend-free ParallelFor/Serial/Tbb adapter가 caller-owned index-addressed slot에서 zero/one/many exact-once와 stable output을 보장하고 oneTBB cancellation의 body exception을 그대로 전파하며 global thread/oversubscription 설정 없이 targeted 3/3 및 전체 42/42를 검증함"
    },
    {
      "step": 18,
      "name": "sparse-assembly",
      "status": "completed",
      "started_at": "2026-08-09T19:07:39+0900",
      "completed_at": "2026-08-09T19:27:34+0900",
      "summary": "ParallelFor index-owned 12x12 element buffers를 stable COO tuple order로 fixed-sum하여 exact sorted-unique 0-based CSR pattern과 structural zero를 보존하고 serial/TBB/repeated byte identity, SparseAssembly 5/5 및 전체 47/47을 검증함"
    },
    {
      "step": 19,
      "name": "essential-constraints",
      "status": "completed",
      "started_at": "2026-08-09T19:37:55+0900",
      "completed_at": "2026-08-09T19:46:22+0900",
      "summary": "Stable free/constrained DOF order로 full CSR을 Kff/Kfc/Kcf/Kcc에 exact partition하고 structural zero와 nonzero prescribed displacement full/reduced roundtrip을 보존해 EssentialConstraints 4/4 및 전체 51/51을 검증함"
    },
    {
      "step": 20,
      "name": "mkl-pardiso-solver",
      "status": "completed",
      "started_at": "2026-08-09T19:50:41+0900",
      "completed_at": "2026-08-09T20:05:06+0900",
      "summary": "Private PImpl oneMKL PARDISO SPD adapter가 full CSR 검증과 checked upper-triangle 변환 뒤 phase 11/22 factorization을 유지하고 phase 33 repeated RHS substitution 및 phase -1 RAII release를 수행하며, structured 실패·conditioning과 targeted 6/6 및 전체 57/57을 검증함"
    },
    {
      "step": 21,
      "name": "load-assembly",
      "status": "completed",
      "started_at": "2026-08-09T20:22:02+0900",
      "completed_at": "2026-08-09T20:34:21+0900",
      "summary": "Semantic node/set CLOAD를 stable full-DOF source order로 합산하고 constrained load를 보존하며 exact Ff-Kfc*dc, nonfinite/dimension/order validation, zero-free/zero-constrained cases를 구현해 LoadAssembly 5/5 및 전체 62/62를 검증함"
    },
    {
      "step": 22,
      "name": "result-recovery",
      "status": "completed",
      "started_at": "2026-08-09T20:42:15+0900",
      "completed_at": "2026-08-09T21:14:47+0900",
      "summary": "Full K*d-F residual을 reaction에 보존해 constrained physical reaction과 free residual evidence를 원자적으로 복구하고 stable endpoint/Gauss/S11 rows 및 unloaded consistent two-endpoint station no-average normalization을 구현해 ResultRecovery 6/6 및 전체 68/68을 검증함"
    },
    {
      "step": 23,
      "name": "hdf5-results-writer",
      "status": "completed",
      "started_at": "2026-08-09T21:23:14+0900",
      "completed_at": "2026-08-09T22:03:33+0900",
      "summary": "Backend-free ResultsWriter 경계 뒤 schema v0의 exact metadata/model/Step-1 frame-0 결과와 stable identity/diagnostics를 mandatory HDF5로 기록하고 same-directory temp flush/checked-close/read-only self-check 뒤 ReplaceFileW 또는 write-through MoveFileExW로 원자화했으며 shared HDF5/libmmd runtime을 stage해 Hdf5ResultsWriter 5/5 및 전체 73/73을 검증함"
    },
    {
      "step": 24,
      "name": "linear-static-cli",
      "status": "completed",
      "started_at": "2026-08-09T22:13:49+0900",
      "completed_at": "2026-08-09T22:54:33+0900",
      "summary": "Exact factorize-before-load single-step lifecycle과 argv0-excluded fesa.exe 0/2/3/4/5/6 CLI를 구현하고 repeated/unknown option token을 usage로 거부하며 read-only legacy B33/HDF5 comparator로 176 rows, 16 metrics, deterministic JSON/physics evidence를 생성해 Step24 10/10 및 전체 83/83을 검증함"
    },
    {
      "step": 25,
      "name": "build-test-verification",
      "status": "completed",
      "started_at": "2026-08-09T23:16:20+0900",
      "summary": "HEAD 400db19에서 fresh Visual Studio 18 2026/MSVC x64 Debug configure와 clean full build를 warning 0건으로 통과하고 JSON discovery 83개, feature-label 83/83, full CTest 83/83, Step 7-24 RED/GREEN/VERIFY 및 reference read-only audit를 확인해 pass-for-reference-verification으로 인계함",
      "completed_at": "2026-08-09T23:25:28+0900"
    },
    {
      "step": 26,
      "name": "reference-verification",
      "status": "completed",
      "started_at": "2026-08-09T23:34:22+0900",
      "completed_at": "2026-08-09T23:43:22+0900",
      "summary": "Approved legacy B33 4-file artifact precheck와 read-only HDF5 schema/source identity/stress audit를 통과하고 exact B33ReferenceComparison을 두 번 1/1 실행해 deterministic comparison.json의 passed=true, 176/176 rows, 16/16 metrics, displacement/reaction/section 66/66/44 rows 및 reference immutability를 독립 검산했으며 final review에서 exact acceptance probe도 authoritative passed boolean으로 정렬·재검증하여 pass-for-physics-evaluation으로 인계함"
    },
    {
      "step": 27,
      "name": "physics-sanity",
      "status": "completed",
      "started_at": "2026-08-09T23:45:30+0900",
      "summary": "Reference gate와 exact B33 HDF5/JSON/reference identity를 확인하고 force/origin-moment equilibrium, constrained reaction와 normalized free residual, displacement/rotation sign, zero symmetry, endpoint/section balance, local/global 및 S11 sanity, finite/energy/mode와 analytical coverage를 검토해 pass-for-release-agent로 인계함",
      "completed_at": "2026-08-09T23:59:16+0900"
    },
    {
      "step": 28,
      "name": "release-readiness",
      "status": "completed",
      "started_at": "2026-08-10T00:08:50+0900",
      "completed_at": "2026-08-10T00:11:51+0900",
      "summary": "Build/Test·Reference Verification·Physics Evaluation의 exact pass gate와 Steps 0-27 completion을 감사하고 44/44 must 요구조건을 acceptance·exact test/evidence·reference/analytical 근거·final disposition에 연결했으며 stale implementation aggregate header를 nonblocking으로 판정하고 limitations·accepted Minors·release notes를 기록해 internal ready-for-release로 인계함"
    }
  ],
  "created_at": "2026-08-09T01:35:55+0900"
}
