fix(rss): add file extension to enclosure url

app/Config/Routes.php

@@ -195,12 +195,12 @@ $routes->group('@(:podcastHandle)', static function ($routes): void {
 });
 
 // audio routes
-$routes->head('audio/@(:podcastHandle)/(:slug)', 'EpisodeController::audio/$1/$2', [
+$routes->head('audio/@(:podcastHandle)/(:slug).(:alphanum)', 'EpisodeController::audio/$1/$2', [
     'as' => 'episode-audio',
-],);
-$routes->get('audio/@(:podcastHandle)/(:slug)', 'EpisodeController::audio/$1/$2', [
+], );
+$routes->get('audio/@(:podcastHandle)/(:slug).(:alphanum)', 'EpisodeController::audio/$1/$2', [
     'as' => 'episode-audio',
-],);
+], );
 
 // Other pages
 $routes->get('/credits', 'CreditsController', [

app/Entities/Episode.php

@@ -337,7 +337,7 @@ class Episode extends Entity
 
     public function getAudioUrl(): string
     {
-        return url_to('episode-audio', $this->getPodcast()->handle, $this->slug);
+        return url_to('episode-audio', $this->getPodcast()->handle, $this->slug, $this->getAudio()->file_extension);
     }
 
     public function getAudioWebUrl(): string

modules/Analytics/Controllers/EpisodeAnalyticsController.php

@@ -72,6 +72,9 @@ class EpisodeAnalyticsController extends Controller
             throw PageNotFoundException::forPageNotFound();
         }
 
-        return redirect()->route('episode-audio', [$episode->podcast->handle, $episode->slug]);
+        return redirect()->route(
+            'episode-audio',
+            [$episode->podcast->handle, $episode->slug, $episode->audio->file_extension]
+        );
     }
 }