Wire LadillLink through QrCode model and remaining QR surfaces.

Public URLs, encoded payloads, slug preview, payment callbacks, and asset paths now use ladl.link instead of ladill.com/q/*.

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

app/Http/Controllers/Qr/QrCodeController.php

@@ -313,7 +313,7 @@ class QrCodeController extends Controller
             }
         }
 
-        $png = $this->imageGenerator->renderPng(QrCode::publicBaseUrl() . '/q/' . $shortCode, $style);
+        $png = $this->imageGenerator->renderPng(\App\Support\LadillLink::url($shortCode), $style);
 
         if ($tempLogoPath) {
             Storage::disk('qr')->delete($tempLogoPath);