seo fixes

app/Providers/AppServiceProvider.php

@@ -3,6 +3,7 @@
 namespace App\Providers;
 
 use App\Models\Page;
+use Illuminate\Support\Facades\URL;
 use Illuminate\Support\Facades\View;
 use Illuminate\Support\ServiceProvider;
 
@@ -21,6 +22,12 @@ class AppServiceProvider extends ServiceProvider
      */
     public function boot(): void
     {
+        // Always generate absolute URLs (route(), url(), canonical tags, sitemap,
+        // JSON-LD, ...) from the configured APP_URL, not the incoming request's
+        // Host header. Without this, www vs apex requests each produce
+        // self-referencing canonical URLs for identical content.
+        URL::forceRootUrl(config('app.url'));
+
         View::composer('components.layouts.app', function ($view) {
             $view->with('footerPages', Page::published()->inFooter()->get());
         });