feat(F-063): completed feature

work/artifacts/F-063/security.json

@@ -0,0 +1,12 @@
+{
+  "feature_id": "F-063",
+  "agent": "security",
+  "verdict": "APPROVED",
+  "summary": "No security boundary touched. The fix only restructures React effects; same data is loaded from the same authenticated endpoint. The cancelled flag avoids acting on a stale response after unmount, which is a small improvement.",
+  "evidence": [
+    "Endpoint, headers, and payload unchanged — GET /api/products/:id via the existing api-client",
+    "cancelled flag prevents a race where a slow response arrives after navigation away",
+    "No new env vars, no new dependencies"
+  ],
+  "timestamp": "2026-08-19T15:10:00Z"
+}