Add @vercel/speed-insights and fix remaining toast implementation

Co-authored-by: syed-reza98 <71028588+syed-reza98@users.noreply.github.com>

Author: Copilot

package-lock.json

@@ -52,6 +52,7 @@
     "@tanstack/react-table": "^8.21.3",
     "@types/bcryptjs": "^2.4.6",
     "@vercel/analytics": "^1.5.0",
+    "@vercel/speed-insights": "^1.2.0",
     "bcryptjs": "^3.0.3",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",

package.json

@@ -4,6 +4,7 @@ import { Toaster } from "@/components/ui/sonner";
 import { ThemeProvider } from "next-themes";
 import { Providers } from "@/components/providers";
 import { Analytics } from "@vercel/analytics/react";
+import { SpeedInsights } from "@vercel/speed-insights/next";
 import "./globals.css";
 
 const geistSans = Geist({
@@ -67,6 +68,7 @@ export default function RootLayout({
           </ThemeProvider>
         </Providers>
         <Analytics />
+        <SpeedInsights />
       </body>
     </html>
   );

src/app/layout.tsx

@@ -274,10 +274,7 @@ export function CouponsList() {
         open={isCreateOpen}
         onOpenChange={setIsCreateOpen}
         onSuccess={() => {
-          toast({
-            title: 'Coupon created',
-            description: 'New discount code has been created successfully',
-          });
+          toast.success('New discount code has been created successfully');
         }}
       />
     </>