feat(F-157): completed feature

work/artifacts/F-157/qa.json

@@ -0,0 +1,15 @@
+{
+  "feature_id": "F-157",
+  "agent": "qa",
+  "stage": "qa_gate",
+  "verdict": "APPROVED",
+  "summary": "Los cuatro criterios de aceptación quedan cubiertos.",
+  "checks": [
+    { "item": "Only one Reporting sidebar entry", "ok": true, "evidence": "Static acceptance check passed" },
+    { "item": "Three page-local sections", "ok": true, "evidence": "Nested layout contains Dashboard, Ventas, Productos" },
+    { "item": "Active section marker", "ok": true, "evidence": "usePathname plus aria-current=page" },
+    { "item": "Admin build", "ok": true, "evidence": "Next.js production build passed" },
+    { "item": "Harness", "ok": true, "evidence": "verify.sh passed" }
+  ],
+  "issues": []
+}