Enriching webmentions from third-party platforms

I keep finding new gaps in my webmention implementation. Mentions coming in from Bluesky, Lemmy and Lobsters were showing up with no author at all, just a blank avatar and an empty name. Reddit and Hacker News bookmarks fared a bit better, with a username attached, but got flattened into a generic “bookmarked” icon with no indication of where the post had actually been shared. Lobsters mentions also carried the wrong published date. None of these felt like they were pulling their weight compared to a proper webmention from a blog or Mastodon. What pushed me from “should fix this someday” to actually doing it was my Xteink X4 post hitting Hacker News the day after I published it, then Lobsters the day after that. The traffic graph still has the spike sitting in it, from next to nothing to over 1,600 views an hour, 7,126 of those visits via news.ycombinator.com alone, and 13,414 of the site’s 15,150 page views over those three days landing on that one post. Suddenly the gaps weren’t…