feat(linear-static-3d-euler-beam): step 18 - sparse-assembly-review-fix

docs/implementation-plans/linear-static-3d-euler-beam-implementation-report.md

@@ -729,8 +729,7 @@
   `tests/unit/assembly/sparse_assembler_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`,
+  `phases/linear-static-3d-euler-beam/index.json`
-  `.superpowers/sdd/linear-static-3d-euler-beam/task-18-report.md`
 - requirement_ids: `FESA-REQ-LS3DEB-024`, `FESA-REQ-LS3DEB-025`,
   `FESA-REQ-LS3DEB-034`, `FESA-REQ-LS3DEB-035`
 - test_ids: `T18-SPARSE-001`, `T18-SPARSE-002`, `T18-SPARSE-003`,
@@ -748,7 +747,7 @@
 | VERIFY-full | `ctest --test-dir .harness/build -C Debug --output-on-failure` | 0 | Full accumulated C++ suite has zero failures | 47/47 tests passed |
 | VERIFY-contract-scans | Public backend/upward-dependency/PARDISO, assembler shared-CSR-member, dense inheritance, exact-test-count, and CMake registration scans using fail-on-match/count `rg` wrappers | 0 | Sparse storage and reduction remain behind the exact approved boundaries | public backend leaks 0; math-header upward dependencies 0; PARDISO matches 0; assembler CSR-member writes 0; dense inheritance 0; tests 5; registrations 2/2 |
 | VERIFY-determinism | Exact bytes, reversed completion, serial/TBB, repeated TBB, tuple-cancellation, structural-zero, empty-row, multiply, validation, and symmetry assertions in the targeted suite | 0 | NR-O02 fixed-order reduction and NR-T11 scheduler independence are observable | one serial, one TBB, one reverse-order, and eight repeated TBB assemblies produced byte-identical row/column/value vectors; duplicate cancellation produced the tuple-ordered literal `1.0` |
-| VERIFY-diff | `git diff --check` plus trailing-whitespace scan over the six new files | 0 | Tracked and untracked Step 18 files have no whitespace errors | Diff check exit 0; new-file trailing whitespace matches 0 |
+| VERIFY-diff | `git diff --check 59da6c6` | 0 | The combined base-to-current-worktree Step 18 tracked range has no whitespace errors | Exact tracked scope is 10 files; generated discovery JSON and ignored scratch report are absent from the range |
 | VERIFY-reference | `git diff --exit-code -- reference/`; `git status --short -- reference/` | 0 | Approved legacy reference artifacts remain read-only and unchanged | Reference diff exit 0 and reference status empty |
 
 - contract_checks: `SparseMatrix` is a separate owning CSR type with 0-based
@@ -779,3 +778,34 @@
   descriptors, indexing conversion, factorization, and substitution.
 - concerns: none; no implementation, environment, backend, or upstream
   contract conflict was found.
+
+### Step 18 Review Fix Round 1 — evidence artifact scope
+
+- classification: evidence/artifact-integrity correction only. Production,
+  public headers, tests, CMake, upstream contracts, and phase-index content
+  were not changed by this review fix.
+- reproduced_finding: before correction,
+  `git diff --check 59da6c6..HEAD` exited 2 with 382 trailing-whitespace
+  findings, all from tracked generated file
+  `.harness/step18-discovery.json`. The cumulative `changed_files` list omitted
+  that tracked file while listing ignored scratch file
+  `.superpowers/sdd/linear-static-3d-euler-beam/task-18-report.md` as though it
+  were tracked.
+- correction: deleted the generated discovery JSON with `apply_patch` and
+  reconciled `changed_files` to the exact 10-file combined tracked scope. The
+  ignored scratch report remains supplementary evidence and is not listed as
+  a tracked Step 18 file.
+- phase_index_guard: `git hash-object
+  phases/linear-static-3d-euler-beam/index.json` was
+  `6808d3a8101f656e978b7e00df6cf1a4ad5f1711` before and after correction.
+
+| stage | exact command | exit_code | observed_result |
+| --- | --- | ---: | --- |
+| REVIEW1-reproduce | `git diff --check 59da6c6..HEAD` | 2 | 382 trailing-whitespace findings were isolated to the accidental tracked discovery JSON |
+| REVIEW1-scope | `git diff --name-status 59da6c6` | 0 | Combined base-to-worktree scope contains exactly 10 tracked Step 18 files; discovery JSON and ignored scratch report are absent |
+| REVIEW1-diff | `git diff --check 59da6c6` | 0 | Combined committed plus worktree Step 18 range is whitespace-clean after artifact deletion |
+| REVIEW1-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 | Exact MSVC x64 dependency-resolved configuration completed |
+| REVIEW1-build | `cmake --build .harness/build --config Debug` | 0 | Full Debug build completed under `/W4 /WX` without a new warning |
+| REVIEW1-targeted | `ctest --test-dir .harness/build -C Debug -R SparseAssembly --output-on-failure` | 0 | Exact SparseAssembly suite passed 5/5 |
+| REVIEW1-full | `ctest --test-dir .harness/build -C Debug --output-on-failure` | 0 | Full accumulated suite passed 47/47 |
+| REVIEW1-reference | `git diff --exit-code 59da6c6 -- reference/`; `git status --short -- reference/` | 0 | Approved reference artifacts remain unchanged and reference status is empty |