fix: relay shutdown, claim lease, dead-letter undecodable, dedup window

crates/worker/src/main.rs

@@ -15,7 +15,5 @@ async fn main() -> anyhow::Result<()> {
     });
 
     tracing::info!("worker started");
-    app.service.run(shutdown_rx).await;
-
-    Ok(())
+    app.run(shutdown_rx).await
 }