feat: clean Weeztix and Mailwizz when admin deletes subscriber

Run CleanupSubscriberIntegrationsService before delete: remove coupon code
in Weeztix via list+DELETE API; update Mailwizz contact to strip configured
source tag from the tag field and clear the mapped coupon field.

Extract MailwizzCheckboxlistTags and MailwizzSubscriberFormPayload for
shared sync/cleanup behaviour. Add WeeztixService list and delete helpers.

Integration failures are logged only; local delete always proceeds.
Feature tests cover Mailwizz strip+clear and Weeztix delete paths.

Made-with: Cursor

app/Http/Controllers/Admin/SubscriberController.php

@@ -10,6 +10,7 @@ use App\Http\Requests\Admin\IndexSubscriberRequest;
 use App\Http\Requests\Admin\QueueMailwizzSyncRequest;
 use App\Models\PreregistrationPage;
 use App\Models\Subscriber;
+use App\Services\CleanupSubscriberIntegrationsService;
 use App\Services\DispatchUnsyncedMailwizzSyncJobsService;
 use Illuminate\Http\RedirectResponse;
 use Illuminate\View\View;
@@ -34,8 +35,13 @@ class SubscriberController extends Controller
         return view('admin.subscribers.index', compact('page', 'subscribers', 'unsyncedMailwizzCount'));
     }
 
-    public function destroy(DestroySubscriberRequest $request, PreregistrationPage $page, Subscriber $subscriber): RedirectResponse
-    {
+    public function destroy(
+        DestroySubscriberRequest $request,
+        PreregistrationPage $page,
+        Subscriber $subscriber,
+        CleanupSubscriberIntegrationsService $cleanupIntegrations
+    ): RedirectResponse {
+        $cleanupIntegrations->runBeforeDelete($subscriber);
         $subscriber->delete();
 
         return redirect()