refactor(auth): replace local background images with external URLs

- Remove local image imports for the background in login and register pages.
- Update background-image styles to use external URL links for easier asset management.

apps/web/src/pages/register-page.tsx

@@ -28,7 +28,18 @@ export function RegisterPage() {
 
   return (
     <main className="flex min-h-screen items-center justify-center px-6 py-12">
-      <div className="w-full max-w-sm md:max-w-md space-y-4">
+      {/* Background Image with Overlay */}
+      <div
+        className="absolute inset-0 z-0"
+        style={{
+          backgroundImage: `linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.4)), url(https://cdn.pixabay.com/photo/2014/09/09/19/07/corn-field-440338_1280.jpg)`,
+          backgroundSize: "cover",
+          backgroundPosition: "center",
+          backgroundRepeat: "no-repeat",
+        }}
+      />
+      {/* Glassmorphism Container */}
+      <div className="relative z-10 w-full max-w-sm md:max-w-md space-y-6 bg-white/60 backdrop-blur-md p-8 md:p-10 rounded-3xl shadow-2xl border border-white/50">
         <AuthForm
           mode="register"
           isSubmitting={mutation.isPending}