Gave jotstr.com a real pass. Two things that actually broke for me:
1) The homepage advertises a feed (link rel=alternate -> /rss.xml), but
https://jotstr.com/rss.xml returns 404: "Author pubkey not found or unresolved for this host." Anything that discovers the feed from the root host dead-ends there. Per-author feeds work (delirehberi.jotstr.com/rss.xml is 200 and full), so it is only the root.
2) The root page has no og:image and no twitter:card, so a shared jotstr.com link renders bare. Author archives already emit og:image, so the pipeline exists, the root just isn't wired.
Edge-rendered posts and working author RSS are solid. If you want the full pass (meta, perf, a11y, copy) written up, I do it for a small fee, just say the word.