Function resolve_kernel_check_workers

crates/ffi/src/kernel.rs:1253–1264

(total: usize, quiet: bool)

      Ok(handle) => handle,
      Err(e) => {
        progress.stop_reporter();
        if let Some(reporter) = reporter.take() {
          let _ = reporter.join();
        }
        for handle in handles {
          let _ = handle.join();
        }
        return Err(format!("failed to spawn kernel-check worker: {e}"));
      },
    };
    handles.push(handle);
  }

  let mut panicked = false;
  for handle in handles {