Auth: convert auth views and verification email to Nova layout

app/Http/Middleware/NormalizeUsername.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use App\Support\UsernamePolicy;
+use Closure;
+use Illuminate\Http\Request;
+use Symfony\Component\HttpFoundation\Response;
+
+class NormalizeUsername
+{
+    public function handle(Request $request, Closure $next): Response
+    {
+        $payload = $request->all();
+
+        if (array_key_exists('username', $payload)) {
+            $payload['username'] = UsernamePolicy::normalize((string) $payload['username']);
+        }
+
+        if (array_key_exists('old_username', $payload)) {
+            $payload['old_username'] = UsernamePolicy::normalize((string) $payload['old_username']);
+        }
+
+        $request->merge($payload);
+
+        return $next($request);
+    }
+}