Refactor admin area and remove legacy root paths

app/root/marquee/page.tsx

@@ -1,60 +0,0 @@
-import { redirect } from "next/navigation";
-
-import { MarqueeSettingsForm } from "@/components/root/marquee-settings-form";
-import { RootDashboardShell } from "@/components/root/root-dashboard-shell";
-import { MotionFade } from "@/components/motion-fade";
-import { clearAdminSessionCookie, isAdminAuthenticated } from "@/lib/admin-auth";
-import { getMarqueeSettings } from "@/lib/app-config";
-
-import { saveMarqueeSettingsAction } from "./actions";
-
-export const dynamic = "force-dynamic";
-
-const copy = {
-  title: "Marquee",
-  subtitle: "Scrollende Textzeilen fuer die Startseite pro Sprache verwalten.",
-  overview: "Uebersicht",
-  maintenance: "Wartungsmodus",
-  uiKit: "UI Kit",
-  media: "Media",
-  siteSettings: "Settings",
-  marquee: "Marquee",
-  smtp: "SMTP",
-  portfolio: "Portfolio",
-  logout: "Ausloggen",
-  backToSite: "Zur Website",
-};
-
-export default async function RootMarqueePage() {
-  if (!(await isAdminAuthenticated())) {
-    redirect("/");
-  }
-
-  async function logoutAction() {
-    "use server";
-
-    await clearAdminSessionCookie();
-    redirect("/");
-  }
-
-  const marqueeSettings = await getMarqueeSettings();
-
-  return (
-    <RootDashboardShell
-      copy={copy}
-      active="marquee"
-      logoutAction={logoutAction}
-      headerTitle={copy.title}
-      headerDescription={copy.subtitle}
-    >
-      <div className="space-y-6">
-        <MotionFade delay={0.14}>
-          <MarqueeSettingsForm
-            action={saveMarqueeSettingsAction}
-            initialSettings={marqueeSettings}
-          />
-        </MotionFade>
-      </div>
-    </RootDashboardShell>
-  );
-}