If you have a look at the packages I maintain I added catalog metadata to htem and I generate automatically
Now this would require to load all the configruatiion files in the images and this is not what you want.
What we could do is to extend the catalog builder server to emit STON files in addition to the html one
and the browser could just load these files without having to download all the configurationOf.
If somebody want to help, the code of the catalog builder is available and the jenkins job up and running
here:
<Configuration browser.png>