Migrate frontend to Vuetify/Vuexy + add real WHMCS product data

- Migrate all frontend from plain JS/Tailwind to TypeScript/Vuetify 3 (Vuexy design system)
- Replace placeholder plans with 25 real products scraped from WHMCS:
  9 VPS plans ($4.20-$30/mo), 8 dedicated servers ($44.39-$107.99/mo),
  4 web hosting plans ($2.39-$15.99/mo), 4 MySQL hosting plans ($6-$30/mo)
- Fix Pricing page: correct field mapping (service_type, price), display
  feature values instead of keys, proper price formatting
- Update all marketing pages (Home, Products, VPS, Dedicated, Web Hosting)
  with real specs, pricing, and features from production WHMCS
- Add 38 Vuexy @core SCSS override files for component styling
- Create 4 layouts (Account, Admin, Auth, Marketing) with Vuetify
- Add AppTextField/AppSelect/AppTextarea wrapper components
- Purple primary theme (#7367F0), dark mode default
- 52 tests passing, build clean

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

website/app/Providers/AppServiceProvider.php

@@ -5,6 +5,7 @@ declare(strict_types=1);
 namespace App\Providers;
 
 use App\Http\Responses\LoginResponse;
+use App\Http\Responses\RegisterResponse;
 use App\Services\Billing\BillingServiceFactory;
 use Illuminate\Cache\RateLimiting\Limit;
 use Illuminate\Http\Request;
@@ -12,12 +13,14 @@ use Illuminate\Support\Facades\RateLimiter;
 use Illuminate\Support\Facades\URL;
 use Illuminate\Support\ServiceProvider;
 use Laravel\Fortify\Contracts\LoginResponse as LoginResponseContract;
+use Laravel\Fortify\Contracts\RegisterResponse as RegisterResponseContract;
 
 class AppServiceProvider extends ServiceProvider
 {
     public function register(): void
     {
         $this->app->singleton(LoginResponseContract::class, LoginResponse::class);
+        $this->app->singleton(RegisterResponseContract::class, RegisterResponse::class);
         $this->app->singleton(BillingServiceFactory::class);
     }