# Step 10: Shell Result Recovery

## 담당 역할과 필수 스킬

- 담당 역할: `implementation-agent`
- 필수 스킬: `harness`, `fesa-cpp-msvc-tdd`

## 읽어야 할 파일

- `/.agents/skills/harness/SKILL.md`, `/.codex/skills/fesa-cpp-msvc-tdd/SKILL.md`
- `/AGENTS.md`, `/docs/PRD.md`, `/docs/ARCHITECTURE.md`, `/docs/ADR.md`
- `/docs/HARNESS.md`, `/docs/HARNESS_WORKFLOW.md`, `/.codex/hooks.json`
- `/docs/implementation-plans/linear-static-mitc4-shell-implementation-plan.md`
- `/docs/requirements/linear-static-mitc4-shell.md` Requirements 029/035/041-046/048/057
- `/docs/research/linear-static-mitc4-shell-research.md`
- `/docs/formulations/mitc4-shell-formulation.md` Sections 14, 16
- `/docs/numerical-reviews/linear-static-mitc4-shell-review.md`
- `/docs/io-definitions/linear-static-mitc4-shell-io.md` Sections 6.3-6.5
- `/docs/reference-models/linear-static-mitc4-shell-reference-models.md`
- phase indexes, `step10.md`, completed Steps 5/9 paths and summaries
- `/include/fesa/results/result_recovery.hpp`
- `/src/fesa/results/result_recovery.cpp`
- `/tests/unit/results/result_recovery_test.cpp`

## 작업

1. `MITC4-REC-001..005`를 먼저 작성한다.
2. Existing full `K*d-F` residual을 nodal reaction/free residual evidence로 유지한다.
3. Shell element displacement는 24-entry scatter로 추출하고 Step 5
   physical-only recovery를 호출해 stable source-element/GP/section order로 candidate를 채운다.
4. Deterministic element reduction으로 physical energy를 합산한다. Applied CLOAD와
   constrained reaction으로 global origin about force/moment balance와 normalized
   metrics를 계산한다.
5. 모든 row/component/location/finite validation 뒤 AnalysisState에 원자적으로 commit한다.

## Acceptance Criteria

```powershell
$requiredBuildPaths=@("C:/git/googletest","C:/Program Files (x86)/Intel/oneAPI/mkl/2026.1/lib/cmake/mkl","C:/Program Files (x86)/Intel/oneAPI/tbb/2023.1/lib/cmake/tbb","C:/Program Files/HDF_Group/HDF5/2.1.1/cmake")
foreach($p in $requiredBuildPaths){if(-not(Test-Path -LiteralPath $p)){throw "Missing $p"}}
cmake --fresh -S . -B .harness/build -G "Visual Studio 18 2026" -A x64 `
  "-DFESA_GTEST_SOURCE_DIR=C:/git/googletest" `
  "-DMKL_DIR=C:/Program Files (x86)/Intel/oneAPI/mkl/2026.1/lib/cmake/mkl" `
  "-DTBB_DIR=C:/Program Files (x86)/Intel/oneAPI/tbb/2023.1/lib/cmake/tbb" `
  "-DHDF5_DIR=C:/Program Files/HDF_Group/HDF5/2.1.1/cmake"
cmake --build .harness/build --config Debug --target fesa_unit_tests
ctest --test-dir .harness/build -C Debug -R "ResultRecovery" --output-on-failure
```

Beam-only recovery/absent shell rows의 expected RED 후 minimal GREEN. 이후:

```powershell
cmake --build .harness/build --config Debug --target fesa_unit_tests
ctest --test-dir .harness/build -C Debug -R "ResultRecovery|AnalysisState|Mitc4ShellPhysicalRecovery" --output-on-failure
cmake --build .harness/build --config Debug
ctest --test-dir .harness/build -C Debug --show-only=json-v1
ctest --test-dir .harness/build -C Debug --output-on-failure
```

## 검증 및 상태 갱신

RED와 focused/full result evidence를 기록하고 current Step만 갱신한다.

## 금지사항

- Result record type 또는 HDF5 schema를 이 Step에서 새로 만들지 마라.
- Location averaging, Abaqus point relabeling, drilling recovery/energy를 추가하지 마라.
- Reaction을 shell resultants의 별도 합으로 정의하지 마라.
- 직접 commit/hook 실행 또는 reference/upstream 변경을 하지 마라.