more fixes

app/Http/Requests/Settings/UpdateAccountSectionRequest.php

@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Requests\Settings;
+
+use App\Http\Requests\UsernameRequest;
+use Illuminate\Foundation\Http\FormRequest;
+
+class UpdateAccountSectionRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    protected function prepareForValidation(): void
+    {
+        if ($this->has('username')) {
+            $this->merge([
+                'username' => \App\Support\UsernamePolicy::normalize((string) $this->input('username')),
+            ]);
+        }
+    }
+
+    public function rules(): array
+    {
+        return [
+            'username' => ['required', ...UsernameRequest::rulesFor((int) $this->user()->id)],
+        ];
+    }
+}