docs(keycloak-session-store): import the session-storage lab as a new project

The keycloak project ended with four open questions that design could not
settle. A two-VM lab was built to answer them by measurement, and this is
that material: 26 experiments, 125 raw command outputs, 22 browser captures.

Follows the import procedure in README.md.

  source/     the originating repository verbatim — 78 documents, 28 SVGs,
              8 manifests, plus .source-revision recording the commit
  final/      the SSOT
    document.md   729 lines written from the 29 experiment documents, not
                  concatenated: what was predicted, what was measured, and
                  where the measurement itself was wrong
    evidence/raw    125 outputs, flattened to <experiment>__<file> because
                    the originals collided (01-baseline.txt appeared three
                    times) and the audit only globs the top level
    evidence/meta   one per raw file; command and exitCode are null and the
                    README says why rather than inventing them
    evidence/browser  22 captures
    assets/       three diagrams through techviz
    .techviz/     their VizSpecs

A separate project rather than an addition to keycloak: the B-layer answers
that project's four questions, but the A, C and D layers are about cluster
failure, SSO and operations, and one document.md should hold one subject.
The four question records there can point here through 관계.

Recorded rather than papered over: only three of the 28 diagrams were
remade. The repository forbids hand-drawn SVG and forbids titles inside the
canvas; all 28 originals carry both, so converting them is redrawing, not
reformatting. They stay in source/ and the gap is written into the document.

verify-pipeline.py passes. audit-records.py reports no issues.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

docs/clean-architecture-backend-template/final/evidence/raw/a07-f006-claude.txt

@@ -0,0 +1,54 @@
+# 지침 문서의 금지 절과 첫 항목에 붙은 근거 둘
+## Forbidden
+
+- Persistence or web technology (JPA/Hibernate/Spring Data/Spring Web) — ArchUnit
+  `identifier_adapter_does_not_depend_on_other_adapters_or_bootstrap`;
+  `.claude/hooks/ca_import_gate.py` G4 가 쓰기 시점에 차단.
+- inbound adapters, persistence adapters, other outbound leaves, `app-bootstrap`,
+  `sample-portfolio`.
+
+# 아키텍처 규칙 쪽 — 선언과 그것이 막는 이름들
+  @ArchTest
+  static final ArchRule IDENTIFIER_ADAPTER_DOES_NOT_DEPEND_ON_OTHER_ADAPTERS_OR_BOOTSTRAP =
+      noClasses()
+          .that()
+          .resideInAPackage("..adapter.outbound.identifier..")
+          .should()
+          .dependOnClassesThat(
+              JavaClass.Predicates.resideInAnyPackage(
+                      "..adapter.inbound.web..",
+                      "..adapter.outbound.persistence..",
+                      "..bootstrap..",
+                      "org.springframework.data.repository..",
+                      "org.springframework.data.jpa.repository..",
+                      "jakarta.persistence..",
+                      "javax.persistence..",
+                      "org.hibernate..")
+                  .or(
+                      JavaClass.Predicates.resideInAPackage("..adapter.outbound..")
+
+#   그 규칙이 실제로 도는가
+    51:@AnalyzeClasses(packages = "dev.caskeleton", importOptions = ProductionClassImportOption.class)
+    92:    implementation project(':adapter:outbound:identifier')
+    50:        run: ./gradlew check verifyPublicPathSnapshot verifyDependencyLocks --warning-mode=fail --no-daemon --stacktrace
+
+#   그 리프의 프로덕션 클래스패스
+    154:empty=compileClasspath,runtimeClasspath
+
+# 훅 쪽 — 그 파일이 있다는 자리
+#   git ls-files .claude : 0
+#   전 이력에서 .claude 아래 추적된 적 : 0
+#   작업 트리 : settings.local.json 
+    .gitignore:3:.claude/	.claude/hooks/ca_import_gate.py
+
+#   문서가 특정한 규칙 번호가 해석되는가
+    src/adapter/outbound/identifier/CLAUDE.md:39:  `.claude/hooks/ca_import_gate.py` G4 가 쓰기 시점에 차단.
+
+# 그 훅을 고치겠다던 계획의 현재 상태
+> **SUPERSEDED — HISTORICAL PROVENANCE ONLY (2026-07-25):** The user-approved harness-free
+> Mode B amendment supersedes this plan. Retain the body as historical provenance; it is not
+> executable instruction.
+#   그것을 대체한 문서의 목표
+7:**Goal:** Restore Gradle bootstrap and Clean Architecture dependency enforcement without recreating
+8-the absent development harness.
+#   그 계획이 새로 만들겠다던 디렉터리 : 없음