If today's Hacker News trend is "ways to archive web pages for permanent storage", let me also point folks to https://webrecorder.net/archivewebpage/ and the WebRecorder suite of tools.
We try to avoid repetition on the frontpage—people tend to post related/follow-up links as submissions (bad) instead of in the comments (good, as you did here!)
Thanks for this recommendation, this is exactly a kind of tool that I think I had hoped might exist out there somewhere. I don't suppose there's a Firefox version?