ITC-WP-0012: integrate Repository Layout Standard

Register the InfoTechCanon Repository Layout Standard as a domain standard
(itc-repo-layout), processed from demand through the canon's Purpose/Demand
intake without collapsing existing model concepts.

- Register standard in artifacts/index.yaml, canon.yaml, infospace.yaml;
  regenerate indexes, views, briefs, tree, and validation (validate green).
- T04: add reconciliation.yaml (partial/as-is dogfooding, declared core
  conformance, recorded tensions); resolve the demand by moving it out of
  demand/ to the evaluation pack as source-demand.md and removing demand/.
- T05: add consumer-adoption-brief.md for downstream repos.
- Update test artifact/standard counts (60->61, standards 2->3).
- Mark T03/T04/T05 done; workplan and registry status -> finished.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

infospace/artifacts/index.yaml

@@ -242,6 +242,23 @@ artifacts:
         target: model/task
       - type: imports
         target: standard/tagging
+  - id: standard/repository-layout
+    path: standards/repository-layout/InfoTechCanonRepositoryLayoutStandard.md
+    kind: standard
+    title: InfoTechCanon Repository Layout Standard
+    provenance:
+      source_path: infospace/evaluations/repository-layout/source-demand.md
+      placement: authored
+      placement_workplan: ITC-WP-0012
+    relationships:
+      - type: conforms_to
+        target: kernel/itc-core
+      - type: imports
+        target: model/information-space
+      - type: imports
+        target: model/governance
+      - type: imports
+        target: model/task
   - id: benchmark/caring/kubernetes-rbac
     path: standards/caring/benchmarks/kubernetes-rbac/benchmark.yaml
     kind: benchmark-workspace