fix(notifications): add toWebhook payload to Hetzner deletion failure notification

app/Notifications/Server/HetznerDeletionFailed.php

@@ -65,4 +65,16 @@ class HetznerDeletionFailed extends CustomEmailNotification
             color: SlackMessage::errorColor()
         );
     }
+
+    public function toWebhook(): array
+    {
+        return [
+            'success' => false,
+            'message' => "[ACTION REQUIRED] Failed to delete Hetzner server #{$this->hetznerServerId} from Hetzner Cloud. The server has been removed from Coolify, but may still exist in your Hetzner Cloud account.",
+            'event' => 'hetzner_deletion_failed',
+            'hetzner_server_id' => $this->hetznerServerId,
+            'error' => $this->errorMessage,
+            'url' => base_url().'/servers',
+        ];
+    }
 }