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>

workplans/index.yaml

@@ -2,7 +2,7 @@ repository: info-tech-canon
 type: workplan-registry
 status: active
 created: "2026-05-23"
-updated: "2026-05-23"
+updated: "2026-06-08"
 
 implementation_decisions:
   infospace_root: infospace/
@@ -165,3 +165,17 @@ workplans:
       - model and standard selection guide
       - consumer workplan templates
       - CLI JSON API review-kit surface
+
+  - id: ITC-WP-0012
+    title: Canonical Repository Layout Standard Integration
+    status: finished
+    priority: medium
+    path: workplans/ITC-WP-0012-canonical-repository-layout-standard.md
+    depends_on:
+      - ITC-WP-0005
+      - ITC-WP-0006
+    produces:
+      - reviewed repository-layout demand signal
+      - repository-layout standard placement and extension candidates
+      - registered repository-layout standard
+      - consumer adoption brief