feat(F-067): completed feature

work/artifacts/F-067/security.json

@@ -0,0 +1,13 @@
+{
+  "feature_id": "F-067",
+  "agent": "security",
+  "verdict": "APPROVED",
+  "summary": "No new attack surface. The frontend proxy forwards the original cookie; the existing backend endpoint keeps the owner-or-admin guard. The checkout override path doesn't write anything back to the customer's address book (the user only picks, never edits).",
+  "evidence": [
+    "Frontend /api/users/[id]/addresses forwards the request with the original cookie; backend's requireOwnerOrAdmin still applies",
+    "Checkout manual edits to the form are scoped to the order payload — no backend write",
+    "No new endpoints, no new env vars, no new dependencies",
+    "Existing auth/me + cart cookie contracts unchanged"
+  ],
+  "timestamp": "2026-08-19T15:35:00Z"
+}