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FESADev/docs/implementation-plans/linear-static-3d-euler-beam-implementation-report.md
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Linear Static 3D Euler Beam Implementation Report

Metadata

  • feature_id: linear-static-3d-euler-beam
  • source_plan: docs/implementation-plans/linear-static-3d-euler-beam.md
  • source_design: docs/superpowers/specs/2026-08-08-linear-static-3d-euler-beam-design.md
  • status: in-progress
  • owner_agent: implementation-agent
  • validation_environment: Windows, MSVC 19.51.36252, Visual Studio 18 2026, x64 Debug
  • report_started: 2026-08-09

Step 7 — cmake-test-foundation

  • task_id: TASK-07
  • status: completed
  • changed_files: CMakeLists.txt, cmake/FesaDependencies.cmake, include/fesa/build_info.hpp, src/fesa/build_info.cpp, src/fesa/CMakeLists.txt, tests/CMakeLists.txt, tests/unit/build_info_test.cpp, docs/implementation-plans/linear-static-3d-euler-beam-implementation-report.md
  • requirement_ids: FESA-REQ-LS3DEB-030, FESA-REQ-LS3DEB-034
  • test_ids: T07-BUILD-001, T07-BUILD-002
stage exact command exit_code expected_or_observed_result evidence_tail
RED Temporarily move include/fesa/build_info.hpp to .harness/build_info.hpp.red-backup; run cmake --build .harness/build --config Debug --target fesa_unit_tests; restore the header in finally 1 Build fails because the public API is unavailable build_info.cpp(1,10): error C1083: 'fesa/build_info.hpp': No such file or directory
GREEN cmake --build .harness/build --config Debug --target fesa_tests; ctest --test-dir .harness/build -C Debug -R BuildInfo --output-on-failure 0 Foundation target builds and both named BuildInfo tests pass BuildInfo.VersionIsStableAndNonEmpty and BuildInfo.PublicHeaderHasNoBackendDependency: 2/2 passed
VERIFY-configure cmake -S . -B .harness/build -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" 0 MSVC x64 Debug build tree generated and dependencies resolved Visual Studio 18 2026; MSVC 19.51.36252; MKL 2026.1; TBB and HDF5 CONFIG packages resolved
VERIFY-build cmake --build .harness/build --config Debug 0 FESA and GoogleTest targets build without FESA warnings fesa_solver.lib and fesa_unit_tests.exe built; no warning emitted under FESA /W4 /WX
VERIFY-discovery ctest --test-dir .harness/build -C Debug --show-only=json-v1 0 CTest discovers at least one test 2 tests discovered, both carrying linear-static-3d-euler-beam and unit labels
VERIFY-full ctest --test-dir .harness/build -C Debug --output-on-failure 0 Full suite has zero failures 2/2 tests passed
  • contract_checks: GoogleTest revision 04ee1b4f2aefdffb0135d7cf2a2c519fe50dabe4; no default C:/git/googletest path in production CMake; /W4 /WX is private to fesa_solver; public BuildInfo header exposes only std::string_view.
  • generated_evidence: .harness/build/src/fesa/Debug/fesa_solver.lib, .harness/build/tests/Debug/fesa_unit_tests.exe
  • environment_note: Native Codex Windows workspace sandboxes stalled in the CMake compiler-id cl.exe child process. The identical approved configure, build, and CTest commands were therefore executed by the root session's authorized unrestricted shell; the same configure completed in 7.9 seconds.
  • reference_diff: unchanged
  • handoff: fesa_solver, fesa_unit_tests, fesa_tests, normalized Fesa::MKL, Fesa::TBB, Fesa::HDF5, and solverVersion() are available to Step 8.

Step 8 — core-diagnostics

  • task_id: TASK-08
  • status: completed
  • changed_files: include/fesa/core/source_identity.hpp, include/fesa/core/diagnostic.hpp, include/fesa/core/status.hpp, src/fesa/core/diagnostic.cpp, src/fesa/core/status.cpp, src/fesa/CMakeLists.txt, tests/CMakeLists.txt, tests/unit/core/source_identity_test.cpp, tests/unit/core/diagnostic_test.cpp, tests/unit/core/status_test.cpp, docs/implementation-plans/linear-static-3d-euler-beam-implementation-report.md
  • requirement_ids: FESA-REQ-LS3DEB-033, FESA-REQ-LS3DEB-034
  • test_ids: T08-CORE-001, T08-CORE-002, T08-CORE-003
stage exact command exit_code expected_or_observed_result evidence_tail
RED cmake --build .harness/build --config Debug --target fesa_tests 1 Tests are registered before production and fail for the three missing core headers MSVC C1083 for fesa/core/diagnostic.hpp, fesa/core/source_identity.hpp, and fesa/core/status.hpp
GREEN-build cmake --build .harness/build --config Debug --target fesa_tests 0 Minimal core implementation and all test translation units build diagnostic.cpp, status.cpp, and three core tests compile; fesa_unit_tests.exe links
GREEN-test ctest --test-dir .harness/build -C Debug -R CoreDiagnostics --output-on-failure 0 Identity, deterministic ordering, and Result exclusivity pass 3/3 CoreDiagnostics tests passed
VERIFY-configure cmake -S . -B .harness/build -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" 0 Approved MSVC x64 build tree regenerates with normalized dependencies Configure and generate completed; MKL 2026.1 resolved
VERIFY-build cmake --build .harness/build --config Debug 0 Full Debug build passes without a new FESA warning fesa_solver.lib and fesa_unit_tests.exe built under /W4 /WX
VERIFY-targeted ctest --test-dir .harness/build -C Debug -R CoreDiagnostics --output-on-failure 0 Focused Step 8 suite remains green 3/3 tests passed
VERIFY-discovery ctest --test-dir .harness/build -C Debug --show-only=json-v1 0 CTest discovers the existing and new named tests 5 tests discovered with feature and unit labels
VERIFY-full ctest --test-dir .harness/build -C Debug --output-on-failure 0 Full accumulated C++ suite has zero failures 5/5 tests passed
VERIFY-harness uv run --with pytest python -m pytest -v -rs 0 Harness regression suite remains green 4/4 tests passed
  • contract_checks: SourceEntityId preserves numeric and raw label forms; sortDiagnostics() applies the fixed file/line/keyword/entity/code tuple with stable discovery-order ties; Status owns sorted diagnostics and optional failure category; Result<T> owns either a value or failed status and rejects both failed value access and construction from an OK status. Core public headers include only FESA core or C++ standard-library headers; no MKL/TBB/HDF5 names are present.
  • generated_evidence: .harness/build/src/fesa/Debug/fesa_solver.lib, .harness/build/tests/Debug/fesa_unit_tests.exe
  • reference_diff: unchanged
  • handoff: SourceLocation, SourceEntityId, Diagnostic, deterministic diagnostic sorting, FailureCategory, Status, and Result<T> are available to Step 9 and later parser/model/solver tasks.

Step 9 — dense-math-adapters

  • task_id: TASK-09
  • status: completed
  • changed_files: include/fesa/math/vector.hpp, include/fesa/math/matrix.hpp, src/fesa/math/vector.cpp, src/fesa/math/matrix.cpp, tests/unit/math/vector_test.cpp, tests/unit/math/matrix_test.cpp, src/fesa/CMakeLists.txt, tests/CMakeLists.txt, docs/implementation-plans/linear-static-3d-euler-beam-implementation-report.md, phases/linear-static-3d-euler-beam/index.json
  • requirement_ids: FESA-REQ-LS3DEB-025, FESA-REQ-LS3DEB-034
  • test_ids: T09-DENSE-001, T09-DENSE-002
stage exact command exit_code expected_or_observed_result evidence_tail
RED cmake --build .harness/build --config Debug --target fesa_tests; ctest --test-dir .harness/build -C Debug -R DenseMath --output-on-failure 1 Both planned tests are registered before production and the build fails for the missing dense-math API MSVC C1083 for fesa/math/matrix.hpp and fesa/math/vector.hpp; DenseMath discovery is unavailable until the test executable builds
GREEN-build cmake --build .harness/build --config Debug --target fesa_tests 0 Minimal dense adapters, tests, and runtime staging compile, link, and complete GoogleTest discovery matrix.cpp, vector.cpp, both math tests, fesa_solver.lib, and fesa_unit_tests.exe built; no FESA warning under /W4 /WX
GREEN-test ctest --test-dir .harness/build -C Debug -R DenseMath --output-on-failure 0 Storage/ownership/checking and row-major BLAS contracts pass 2/2 DenseMath tests passed
VERIFY-configure cmake -S . -B .harness/build -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" 0 Approved MSVC x64 build tree regenerates with explicit dependencies Configure/generate completed; oneMKL 2026.1 dynamic ILP64 backend resolved
VERIFY-build cmake --build .harness/build --config Debug 0 Full Debug build passes without a new FESA warning fesa_solver.lib and fesa_unit_tests.exe built under /W4 /WX
VERIFY-targeted ctest --test-dir .harness/build -C Debug -R DenseMath --output-on-failure 0 Focused dense-math suite remains green 2/2 tests passed
VERIFY-discovery ctest --test-dir .harness/build -C Debug --show-only=json-v1 0 CTest discovers the accumulated tests and both exact DenseMath names 7 tests discovered with feature/unit labels
VERIFY-full ctest --test-dir .harness/build -C Debug --output-on-failure 0 Full accumulated C++ suite has zero failures 7/7 tests passed
VERIFY-public-header $leaks = rg -n "mkl\.h|MKL_INT|CBLAS_" include/fesa; if ($LASTEXITCODE -eq 0) { throw "MKL API leaked into public headers:n$leaks" }; if ($LASTEXITCODE -ne 1) { throw 'Public-header dependency scan failed' }` 0 Public headers remain independent of oneMKL API and types rg returned the required no-match exit 1; wrapper scan completed with zero leaks
  • contract_checks: Vector accepts zero size, owns contiguous doubles, deep-copies, leaves moved-from objects empty and usable, checks every index, and rejects dot/axpy mismatches; Matrix accepts zero dimensions, owns row-major contiguous doubles, deep-copies, leaves moved-from objects empty and usable, checks every index, and rejects GEMV/GEMM mismatches. Hand-derived nonsquare GEMV [50,122] and GEMM [[58,64],[139,154]] pass. All copy, dot, norm, scale, axpy, GEMV, and GEMM calls cross CBLAS only inside .cpp files. Windows tests stage the package-resolved oneMKL/OpenMP runtime before post-build discovery because the exact shell does not assume oneAPI in PATH.
  • generated_evidence: .harness/build/src/fesa/Debug/fesa_solver.lib, .harness/build/tests/Debug/fesa_unit_tests.exe
  • reference_diff: unchanged; git diff --exit-code -- reference/ exit 0
  • handoff: backend-free fesa::Vector and fesa::Matrix public APIs, with owning dense storage and checked BLAS operations, are available to Step 10 and later DOF/element/assembly tasks.

Review Fix Round 1 — matrix-storage-size-overflow

  • regression_test: tests/unit/math/matrix_test.cpp now constructs Matrix{SIZE_MAX / 2 + 1, 2} and requires std::length_error.
  • RED: cmake --build .harness/build --config Debug --target fesa_tests exited 0; ctest --test-dir .harness/build -C Debug -R DenseMath --output-on-failure exited 8 with 1/2 failures because the wraparound constructor threw nothing.
  • fix: Matrix computes its storage size through a checked helper before vector construction and rejects exactly columns != 0 && rows > SIZE_MAX / columns.
  • GREEN: the same targeted build and DenseMath CTest commands exited 0; 2/2 passed.
  • VERIFY: approved MSVC x64 configure and full Debug build exited 0; targeted DenseMath passed 2/2, discovery found 7 tests, and the full suite passed 7/7. The public-header MKL scan had zero matches, git diff --check exited 0, and git diff --exit-code -- reference/ exited 0.
  • scope: the deferred empty-dot review minor was not changed, reference artifacts remain untouched, and phase Step 9 status/timestamps were not modified.