Depend on futures-util instead of futures

examples/complex_dag.rs

@@ -67,7 +67,7 @@
 //! ```
 
 use dagx::{task, DagResult, DagRunner};
-use futures::FutureExt;
+
 
 // Extract: Load data from different sources
 struct LoadData {
@@ -202,7 +202,7 @@ async fn main() -> DagResult<()> {
 
     // Execute the entire ETL pipeline
     println!("Executing pipeline...\n");
-    dag.run(|fut| tokio::spawn(fut).map(Result::unwrap)).await?;
+    dag.run(|fut| async move { tokio::spawn(fut).await.unwrap() }).await?;
 
     // Display final report
     println!("\n{}", dag.get(report)?);