feat: order Scaleway backup bucket for WP-0002 T03

Policy now allows Object Storage. Inventory moves proposed -> ordered
with provider_resource_id and reef-storage attribute refs. Cost alert
remains a founder console action; scoped Barman key is T04.

tests/test_portfolio.py

@@ -39,6 +39,7 @@ class PortfolioTest(unittest.TestCase):
             r for _, r in self.records() if r["id"] == "resource:platform:audit-storage"
         ))
         record["status"] = "ordered"
+        record["decision"]["status"] = "draft"
         with self.assertRaisesRegex(ValueError, "approved decision"):
             validate_record(record)
         record["decision"]["status"] = "approved"