build: backup-object-storage AppRole lane delivered

plans/backup-object-storage.md

@@ -3,9 +3,9 @@ id: backup-object-storage
 demand_source: resource-control/workplans/RESOURCE-WP-0002-T04
 consumer_repo: rapp-postgres
 credential_type: openbao-kv-founder-provision
-status: draft
-approved_by: null
-approved_at: null
+status: built
+approved_by: "Bernd Worsch"
+approved_at: "2026-08-14"
 created: "2026-08-14"
 updated: "2026-08-14"
 ---
@@ -102,7 +102,19 @@ the KV version, rotate.
 **Cost to reverse:** delete the KV path, policy, and unused drafts.
 WAL is not enabled yet, so there is no production archive to migrate.
 
-**Decision:** approve, reject, or send back to phase 1.
-Approval authorizes structure (empty path, policy). It does not
-authorize ops-mason to handle the Scaleway secret values, and it does
-not enable continuous archiving.
+**Decision:** approved in chat 2026-08-14 (“Lets go”).
+
+## 6. Build result
+
+Built 2026-08-14:
+
+- policy `workload-kv-read-backup-object-storage` (read on the KV data
+  and metadata paths only)
+- AppRole `external-secrets-backup-object-storage` (15m/30m, 8 uses)
+- Kubernetes Secret `external-secrets/openbao-backup-object-storage-approle`
+  delivered; local files shredded
+- ClusterSecretStore `openbao-backup-object-storage` Valid
+- ExternalSecret synced `databases/platform-pg-backup-s3` (two keys,
+  values not read)
+
+Did not write Scaleway secret values. Did not enable WAL.