bootstrap: planned object-storage reef, no rail

Declare reef-storage as substrate_kind object-storage. Hold non-secret
attribute paths for Scaleway S3. Do not host a compute rail.

workplans/REEF-STORAGE-WP-0001-bootstrap.md

@@ -0,0 +1,44 @@
+---
+id: REEF-STORAGE-WP-0001
+type: workplan
+title: "Bootstrap reef-storage"
+domain: financials
+repo: reef-storage
+status: active
+owner: grok
+topic_slug: railiance
+created: "2026-08-14"
+updated: "2026-08-14"
+related:
+  - RMASTER-WP-0022
+  - RESOURCE-WP-0002
+---
+
+# REEF-STORAGE-WP-0001 — bootstrap
+
+## Goal
+
+Stand up the planned storage reef: declaration without a rail, attribute
+file layout, and the contract for non-secret object-store facts.
+
+## T01 — Declare the reef
+
+```task
+id: REEF-STORAGE-WP-0001-T01
+status: done
+priority: high
+```
+
+`declarations/reef.yaml`: `substrate_kind: object-storage`, no
+`primary_rail`, no `hosted_rails`, empty `current_members`, planned.
+
+## T02 — Attribute contract
+
+```task
+id: REEF-STORAGE-WP-0001-T02
+status: done
+priority: high
+```
+
+`schemas/object-store-attributes.schema.json` and a planned
+`platform-audit-storage.yaml` with null operating fields until purchase.