feat(ADM-018): completed feature

work/artifacts/F-027/security.json

@@ -0,0 +1,13 @@
+{
+  "feature_id": "F-027",
+  "agent": "security",
+  "verdict": "APPROVED",
+  "summary": "Security approved. No new dependencies. Cache contracts route is admin-only, metrics route requires authenticated user. Adapter write errors are swallowed to preserve availability.",
+  "evidence": [
+    "cd project && npm audit --audit-level=high --omit=dev: found 0 vulnerabilities",
+    "Reviewed /cache/contracts: requireRole admin",
+    "Reviewed /cache/metrics: authenticated",
+    "Reviewed fallback: loader executes when adapter fails"
+  ],
+  "timestamp": "2026-08-15T19:00:58Z"
+}