feat: Prepare Zemailnator for Dokploy deployment

- Add highly optimized Dockerfile with Nginx and PHP-FPM 8.4
- Add docker-compose.yml configured with Redis and MariaDB 10.11
- Implement entrypoint.sh and supervisord.conf for background workers
- Refactor legacy IMAP scripts into scheduled Artisan Commands
- Secure app by removing old routes with hardcoded basic auth credentials
- Configure email attachments to use Laravel Storage instead of insecure public/tmp

app/Filament/Resources/TrialExtensions/Schemas/TrialExtensionForm.php

@@ -34,6 +34,7 @@ class TrialExtensionForm
                                                 if ($subscription->trial_ends_at) {
                                                     $label .= " ({$subscription->trial_ends_at->format('M j, Y')})";
                                                 }
+
                                                 return [$subscription->id => $label];
                                             })
                                             ->toArray();
@@ -158,12 +159,14 @@ class TrialExtensionForm
 
         if (! $subscriptionId || ! $extensionDays) {
             $set('new_trial_ends_at', null);
+
             return;
         }
 
         $subscription = Subscription::find($subscriptionId);
         if (! $subscription) {
             $set('new_trial_ends_at', null);
+
             return;
         }