fix: correct stream status on stop failure and ensure clean subscribe/goroutine ordering (#14)

* Initial plan

* fix: set streamErrored status in Stop() when stream.Stop() fails

Co-authored-by: intel352 <77607+intel352@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: intel352 <77607+intel352@users.noreply.github.com>

Author: Copilot

internal/stream_module.go

@@ -109,6 +109,7 @@ func (m *streamModule) Stop(ctx context.Context) error {
 
 	if m.stream != nil {
 		if err := m.stream.Stop(ctx); err != nil {
+			m.setStatus(streamErrored)
 			slog.Error("error stopping bento stream", "error", err, "module", m.name)
 			return fmt.Errorf("bento.stream %q: stop: %w", m.name, err)
 		}