docs: align consolidated solver workflow

phases/linear-static-3d-euler-beam/step26.md

@@ -12,11 +12,11 @@
 - `/docs/ARCHITECTURE.md`
 - `/docs/ADR.md`
 - `/docs/reference-verifications/README.md`
-- `/docs/build-test-reports/linear-static-3d-euler-beam.md`
-- `/docs/reference-models/linear-static-3d-euler-beam-reference-models.md`
-- `/docs/io-definitions/linear-static-3d-euler-beam-io.md`
-- `/docs/requirements/linear-static-3d-euler-beam.md`
-- `/docs/implementation-plans/linear-static-3d-euler-beam-implementation-report.md`
+- `/docs/linear-static-3d-euler-beam/build-test.md`
+- `/docs/linear-static-3d-euler-beam/reference-model.md`
+- `/docs/linear-static-3d-euler-beam/io.md`
+- `/docs/linear-static-3d-euler-beam/requirements.md`
+- `/docs/linear-static-3d-euler-beam/implementation-report.md`
 - `/reference/cantilever beam/cantilever beam.inp`
 - `/reference/cantilever beam/cantilever beam displacements.csv`
 - `/reference/cantilever beam/cantilever beam reactions.csv`
@@ -28,7 +28,7 @@
 Build/Test report status가 `pass-for-reference-verification`인지 먼저 확인한다. 통과했다면
 승인 input으로 solver output을 재생성하고, test-only comparison utility가 기록한 raw
 normalized rows/metrics를 독립 검토해
-`docs/reference-verifications/linear-static-3d-euler-beam-reference-verification.md`를 작성하라.
+`docs/linear-static-3d-euler-beam/reference-comparison.md`를 작성하라.
 
 Artifact check:
 
@@ -61,7 +61,7 @@ source/test/CMake/reference/tolerance가 모두 unchanged임을 기록한다.
 ## Acceptance Criteria
 
 ```powershell
-if (-not (Select-String -LiteralPath 'docs/build-test-reports/linear-static-3d-euler-beam.md' `
+if (-not (Select-String -LiteralPath 'docs/linear-static-3d-euler-beam/build-test.md' `
     -SimpleMatch 'status: `pass-for-reference-verification`' -Quiet)) {
   throw 'Build/test gate is not passing'
 }
@@ -74,7 +74,7 @@ git diff --exit-code -- reference/
 ```
 
 ```powershell
-$path = 'docs/reference-verifications/linear-static-3d-euler-beam-reference-verification.md'
+$path = 'docs/linear-static-3d-euler-beam/reference-comparison.md'
 if (-not (Test-Path $path)) { throw "Missing $path" }
 $required = @('status: `pass-for-physics-evaluation`', '## Artifact Inventory',
   '## Comparison Contract', '## Quantity Results', '## No-Change Assertion',