feat: Next.js 14 web admin scaffold — auth, sidebar, dashboard, placeholders

app/(app)/settings/plans/page.tsx

@@ -0,0 +1,31 @@
+'use client';
+
+import { Card, CardContent } from '@/components/ui/card';
+import { Button } from '@/components/ui/button';
+import { Plus } from 'lucide-react';
+
+export default function PlansPage() {
+  return (
+    <div>
+      <div className="mb-6 flex items-center justify-between">
+        <div>
+          <h1 className="text-2xl font-bold text-slate-800">Service Plans</h1>
+          <p className="text-slate-500 text-sm mt-1">Manage internet subscription plans</p>
+        </div>
+        <Button style={{ backgroundColor: '#0891B2' }}>
+          <Plus size={16} className="mr-2" />
+          Add Plan
+        </Button>
+      </div>
+
+      <div className="grid grid-cols-1 md:grid-cols-3 gap-4">
+        <Card className="border shadow-sm border-dashed border-slate-300">
+          <CardContent className="flex flex-col items-center justify-center py-12 text-slate-400">
+            <Plus size={24} className="mb-2" />
+            <p className="text-sm">Create your first plan</p>
+          </CardContent>
+        </Card>
+      </div>
+    </div>
+  );
+}