Is there a signal for getting the Kibana dashboard ID? Or better yet - is there a way to just print all the available signals in Vega? I'd be happy to read through a tutorial if you know one - I'm just having a surprisingly hard time finding relevant documentation.
There is no way to get the dashboard ID in vega currently. If you want you can submit it as a feature request here: https://github.com/elastic/kibana/issues/new?template=Feature_request.md