feat(auth): add role guards and protect admin routes

src/app/(dashboard)/layout.tsx

@@ -3,15 +3,18 @@ import { Toaster } from "sonner"
 import Navbar from "@/components/layout/navbar"
 import AppSidebar from "@/components/layout/sidebar"
 import { SidebarProvider } from "@/components/ui/sidebar"
+import { auth } from "@/lib/auth"
 
 export default async function LayoutDashboard({
   children,
 }: {
   children: React.ReactNode
 }) {
+  const session = await auth()
+
   return (
     <SidebarProvider>
-      <AppSidebar />
+      <AppSidebar userRole={session?.user.role} />
       <main className="w-full">
         <Navbar />
         <div className="flex-1 p-6">{children}</div>