feat(F-081): completed feature

work/artifacts/F-081/security.json

@@ -0,0 +1,15 @@
+{
+  "feature_id": "F-081",
+  "verdict": "APPROVED",
+  "checks": [
+    { "name": "XSS / parser safety", "result": "PASS", "notes": "eurToCents uses parseFloat; result is a number, never rendered as HTML." },
+    { "name": "Auth unchanged", "result": "PASS", "notes": "Same admin-gated endpoint." },
+    { "name": "No new dependencies", "result": "PASS", "notes": "No new packages." }
+  ],
+  "sast": "PASS",
+  "dependency_review": "PASS",
+  "secret_scan": "PASS",
+  "verdict_reason": "Format-only UI change; no new attack surface.",
+  "reviewer": "security",
+  "reviewed_at": "2026-08-20T04:03:30Z"
+}