Add publication ids and metadata to estate ADRs

Prefix CUST-ADR-001–011 and record owner, revision, and review dates
so policy-nexus can publish them. Estate arc42 chapter 9 updated.

canon/architecture/adr-007-workplan-identity-and-repo-worker-topology.md

@@ -1,8 +1,12 @@
 ---
-id: ADR-007
+id: CUST-ADR-007
 type: architecture-decision-record
 title: "Workplan Identity Uniqueness, Single Registrar, and Repo Worker Topology"
 status: accepted
+owner: the-custodian
+revision: "accepted-1"
+last_reviewed: "2026-08-17"
+review_interval: 6m
 decided_by: Bernd Worsch
 date: "2026-08-16"
 accepted: "2026-08-17"