Add POS Pro subscription billing and free-tier limits.

Wallet-backed Pro unlocks unlimited products, restaurant mode, catalog imports, and ecosystem sync features.

Co-authored-by: Cursor <cursoragent@cursor.com>

bootstrap/app.php

@@ -22,6 +22,7 @@ return Application::configure(basePath: dirname(__DIR__))
         ]);
         $middleware->alias([
             'platform.session' => \App\Http\Middleware\EnsurePlatformSession::class,
+            'pro' => \App\Http\Middleware\EnsurePro::class,
         ]);
     })
     ->withExceptions(function (Exceptions $exceptions): void {