feat(admin): Weeztix setup wizard, integration status badges

- Summary view when Weeztix is configured; edits only via 3-step wizard
- Step 1: reuse or replace OAuth client ID/secret; callback URL shown
- Step 2: OAuth connect (resume wizard after callback when started from wizard)
- Step 3: coupon, prefix, usage; finishing exits wizard
- PreregistrationPage: mailwizz/weeztix integration status helpers
- Pages index: Integrations column with MW/WZ badges; edit page: status cards

Made-with: Cursor

app/Http/Controllers/Admin/WeeztixController.php

@@ -8,18 +8,34 @@ use App\Http\Controllers\Controller;
 use App\Http\Requests\Admin\UpdateWeeztixConfigRequest;
 use App\Models\PreregistrationPage;
 use Illuminate\Http\RedirectResponse;
+use Illuminate\Http\Request;
 use Illuminate\Support\Facades\DB;
 use Illuminate\View\View;
 
 class WeeztixController extends Controller
 {
-    public function edit(PreregistrationPage $page): View
+    public function edit(Request $request, PreregistrationPage $page): View
     {
         $this->authorize('update', $page);
 
         $page->load('weeztixConfig');
 
-        return view('admin.weeztix.edit', compact('page'));
+        $showWizard = $page->weeztixConfig === null || $request->boolean('wizard');
+        $wizardStep = $showWizard ? min(3, max(1, (int) $request->query('step', 1))) : 1;
+        if ($showWizard && $page->weeztixConfig === null && $wizardStep !== 1) {
+            return redirect()
+                ->route('admin.pages.weeztix.edit', ['page' => $page, 'wizard' => 1, 'step' => 1]);
+        }
+        $hasStoredCredentials = $page->weeztixConfig !== null
+            && is_string($page->weeztixConfig->client_id)
+            && $page->weeztixConfig->client_id !== '';
+
+        return view('admin.weeztix.edit', compact(
+            'page',
+            'showWizard',
+            'wizardStep',
+            'hasStoredCredentials'
+        ));
     }
 
     public function update(UpdateWeeztixConfigRequest $request, PreregistrationPage $page): RedirectResponse
@@ -41,8 +57,26 @@ class WeeztixController extends Controller
             );
         });
 
+        $page->load('weeztixConfig');
+
+        if ($request->boolean('wizard')) {
+            if ($request->boolean('wizard_coupon_save')) {
+                return redirect()
+                    ->route('admin.pages.weeztix.edit', ['page' => $page])
+                    ->with('status', __('Weeztix-configuratie opgeslagen.'));
+            }
+
+            return redirect()
+                ->route('admin.pages.weeztix.edit', [
+                    'page' => $page,
+                    'wizard' => 1,
+                    'step' => 2,
+                ])
+                ->with('status', __('Weeztix-configuratie opgeslagen.'));
+        }
+
         return redirect()
-            ->route('admin.pages.weeztix.edit', $page)
+            ->route('admin.pages.weeztix.edit', ['page' => $page])
             ->with('status', __('Weeztix-configuratie opgeslagen.'));
     }