ChapelCon '25 Retrospective

[brandon-neth]

This PR includes a new blog post for the retrospective on ChapelCon '25.

[bradcray]

This generally looks nice, and most of my embedded comments are small/minor/local. The "biggest" is probably that a number of the YouTube links are pointing to the original versions of the talks that had that frozen frame issue at the start and should be updated.

Outside of reading what's here, the main thing that strikes me is that it's a very non-visual article, making me wonder whether we could include a compelling slide/screenshot from some or all of the talks you call out. Could alternatively use the title slide and have it hyperlink to the slides or talk. This is obviously completely optional, but I think it would make the article a bit more enticing to look at and read through.

One other thing to consider is whether there are main points you'd like to highlight as pull quotes, which is another way to punch up the article for short attention spans / non-readers / their AIs. (not exclusive with the previous idea, you could do both).