I came here to mention https://github.com/gildas-lormeau/singlefile, I couldn't get it to do what I want so I built my own, for watched domains it pushes a copy of the serialized DOM to a local search database. For structured data, either extract and enrich in the browser or enrich on the server side.

Would Hister support this basic workflow? I'd love to retire my own software.

The next phase was going to move to a recording proxy.