feature: phase1 - org-type navigation, Cases permissions, staff filtering, and route guards.

frontend/src/app/[locale]/(dashboard)/cases/page.tsx

@@ -0,0 +1,14 @@
+'use client';
+
+import { useTranslations } from 'next-intl';
+
+export default function CasesPage() {
+  const t = useTranslations('cases');
+
+  return (
+    <div className="space-y-4">
+      <h1 className="text-2xl font-semibold text-text-primary">{t('title')}</h1>
+      <p className="text-sm text-text-muted max-w-xl">{t('stubDescription')}</p>
+    </div>
+  );
+}