refactor: refactor controllers, services, validation and introduce DTOs, FormRequests and domain exceptions

app/Http/Requests/User/UpdateProfileRequest.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Http\Requests\User;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class UpdateProfileRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     */
+    public function rules(): array
+    {
+        return [
+            'avatar'       => 'nullable|image|max:2048', // 2MB max
+            'new_password' => 'nullable|min:6|confirmed',
+        ];
+    }
+}