fix(backend): parse rtorrent version string in health check logs

backend/src/main.rs

@@ -104,7 +104,10 @@ async fn main() {
         let client = xmlrpc::RtorrentClient::new(&args.socket);
         // We use a lightweight call to verify connectivity
         match client.call("system.client_version", &[]).await {
-            Ok(v) => tracing::info!("Connected to rTorrent successfully. Version: {}", v),
+            Ok(xml) => {
+                let version = xmlrpc::parse_string_response(&xml).unwrap_or(xml);
+                tracing::info!("Connected to rTorrent successfully. Version: {}", version);
+            }
             Err(e) => tracing::error!("Socket exists but failed to connect to rTorrent: {}", e),
         }
     }