feat(admin): centralize subscriptions under /admin?tab=subscriptions

Replaced the dedicated /admin/subscriptions page with a redirect to the central admin panel’s subscriptions tab. Removed session checks, imports, and the AdminSubscriptionDashboard since routing and access are now handled centrally. This streamlines admin UX and keeps access control unified.

app/[locale]/admin/subscriptions/page.tsx

@@ -1,64 +1,20 @@
 import type { Metadata } from "next";
 import { redirect } from "next/navigation";
-import { cookies } from "next/headers";
-import Header from "@/components/Header";
-import { getSession } from "@/lib/redis/session";
-import { getAllSubscriptionTiers } from "@/lib/prisma/queries/subscription-tiers";
-import { AdminSubscriptionDashboard } from "@/components/admin/subscription-dashboard";
-import { getUserById } from "@/lib/prisma/queries/users";
 
 export async function generateMetadata(): Promise<Metadata> {
   return {
     title: "Assinaturas e Permissões",
     description:
-      "Gerencie os planos de assinatura, recursos avançados e permissões dos usuários.",
+      "Redirecionando para o painel administrativo centralizado.",
   };
 }
 
-export default async function AdminSubscriptionsPage({
+export default async function AdminSubscriptionsRedirect({
   params,
 }: {
   params: Promise<{ locale: string }>;
 }) {
   const { locale } = await params;
-  const cookieStore = await cookies();
-  const sessionId = cookieStore.get("sessionId")?.value;
-
-  if (!sessionId) {
-    redirect(`/${locale}`);
-  }
-
-  const session = await getSession(sessionId);
-
-  if (!session || session.userId !== 1) {
-    redirect(`/${locale}`);
-  }
-
-  const tiers = await getAllSubscriptionTiers(true);
-  const adminUser = await getUserById(session.userId);
-
-  return (
-    <div className="min-h-screen bg-background text-foreground">
-      <Header />
-      <main className="container mx-auto px-4 py-10 space-y-8">
-        <section className="space-y-2">
-          <h1 className="text-3xl font-bold">Assinaturas & Permissões</h1>
-          <p className="text-muted-foreground">
-            Configure planos, recursos e vincule usuários às assinaturas disponíveis.
-          </p>
-          {adminUser?.subscription_tier && (
-            <p className="text-sm text-muted-foreground">
-              Seu plano atual:{" "}
-              <span className="font-semibold uppercase">
-                {adminUser.subscription_tier.name} ({adminUser.subscription_tier.slug})
-              </span>
-            </p>
-          )}
-        </section>
-
-        <AdminSubscriptionDashboard initialTiers={tiers} />
-      </main>
-    </div>
-  );
+  redirect(`/${locale}/admin?tab=subscriptions`);
 }