more internal polish, resilient workers

crates/worker/src/main.rs

@@ -58,6 +58,7 @@ async fn main() -> Result<()> {
                 task_timeout: 300,
                 max_stdout_bytes: 10 * 1024 * 1024,
                 max_stderr_bytes: 10 * 1024 * 1024,
+                shutdown_timeout: Some(30),
                 stream_logs: true,
             });
         }