Generate QR code on order create; implement reGenerate route

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

app/Http/Controllers/AutoController.php

@@ -4,6 +4,7 @@ namespace App\Http\Controllers;
 
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\DB;
+use App\Http\Controllers\QrController;
 
 class AutoController extends Controller
 {
@@ -110,6 +111,7 @@ class AutoController extends Controller
             'created_at'             => $request->created_at ?? now(),
             'updated_at'             => now(),
         ]);
+        QrController::generateQr($id, 'auto_');
         return redirect()->route('auto.show', $id);
     }