feat(update): handle platform upgrade errors and log them appropriately

Author: dido18

internal/update/arduino/arduino.go

@@ -209,6 +209,12 @@ func (a *ArduinoPlatformUpdater) UpgradePackages(ctx context.Context, names []st
 			},
 			stream,
 		); err != nil {
+			var alreadyPresent *cmderrors.PlatformAlreadyAtTheLatestVersionError
+			if errors.As(err, &alreadyPresent) {
+				eventsCh <- update.Event{Type: update.UpgradeLineEvent, Data: alreadyPresent.Error()}
+				return
+			}
+
 			var notFound *cmderrors.PlatformNotFoundError
 			if !errors.As(err, &notFound) {
 				eventsCh <- update.Event{

internal/update/update.go

@@ -146,6 +146,9 @@ func (b *Manager) broadcast(event Event) {
 	b.mu.RLock()
 	defer b.mu.RUnlock()
 
+	if event.Type == ErrorEvent {
+		slog.Error("An error occurred", slog.Any("event", event))
+	}
 	for ch := range b.subs {
 		select {
 		case ch <- event: