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/agent/retrieval-index.json

@@ -43,7 +43,7 @@
     }
   ],
   "infospace": "canon",
-  "item_count": 60,
+  "item_count": 61,
   "items": [
     {
       "canonical_path": "standards/caring/benchmarks/kubernetes-rbac/benchmark.yaml",
@@ -2241,6 +2241,46 @@
       "title": "InfoTechCanon CARING Access Governance Standard",
       "warnings": []
     },
+    {
+      "canonical_path": "standards/repository-layout/InfoTechCanonRepositoryLayoutStandard.md",
+      "id": "standard/repository-layout",
+      "imports": [
+        "kernel/itc-core",
+        "model/governance",
+        "model/information-space",
+        "model/task"
+      ],
+      "kind": "standard",
+      "owned_concepts": [
+        "CanonicalRepositoryLayout",
+        "InfoTechCanon Repository Layout Standard",
+        "LayoutConformanceLevel",
+        "RepositoryDocumentationDirectory",
+        "ScopeIntentOperatingMode"
+      ],
+      "relationships": [
+        {
+          "target": "kernel/itc-core",
+          "type": "conforms_to"
+        },
+        {
+          "target": "model/information-space",
+          "type": "imports"
+        },
+        {
+          "target": "model/governance",
+          "type": "imports"
+        },
+        {
+          "target": "model/task",
+          "type": "imports"
+        }
+      ],
+      "source_path": "infospace/evaluations/repository-layout/source-demand.md",
+      "summary": "Cross-cutting canon standard: InfoTechCanon Repository Layout Standard.",
+      "title": "InfoTechCanon Repository Layout Standard",
+      "warnings": []
+    },
     {
       "canonical_path": "standards/tagging/InfoTechCanonTaggingStandard.md",
       "id": "standard/tagging",