fix(ux): have podcast dashboard card link to podcast dashboard if only one podcast in instance

themes/cp_admin/dashboard.php

@@ -12,7 +12,7 @@
 <?= $this->section('content') ?>
 
 <div class="flex flex-wrap items-start gap-4">
-    <DashboardCard href="<?= route_to('podcast-list') ?>" glyph="mic" title="<?= lang('Dashboard.podcasts.title') ?>" subtitle="<?= $podcastsData['last_published_at'] ? esc(lang('Dashboard.podcasts.last_published', [
+    <DashboardCard href="<?= $onlyPodcastId === null ? route_to('podcast-list') : route_to('podcast-view', $onlyPodcastId) ?>" glyph="mic" title="<?= lang('Dashboard.podcasts.title') ?>" subtitle="<?= $podcastsData['last_published_at'] ? esc(lang('Dashboard.podcasts.last_published', [
         'lastPublicationDate' => local_date($podcastsData['last_published_at']),
     ], null, false)) : lang('Dashboard.podcasts.not_found') ?>"><?= $podcastsData['number_of_podcasts'] ?></DashboardCard>
     <DashboardCard href="<?= $onlyPodcastId === null ? '' : route_to('episode-list', $onlyPodcastId) ?>" glyph="play" title="<?= lang('Dashboard.episodes.title') ?>" subtitle="<?= $episodesData['last_published_at'] ? esc(lang('Dashboard.episodes.last_published', [