What's left to get wrong
There's no /admin on this site. No login form to try a password against, no session cookie to steal, no plugin list to check against last month's CVEs — not because a checklist said to strip them out, but because none of them were ever built in the first place.
The engine's own architecture notes put the rest of it plainly: the threat model is a static site with no server of its own. Nothing here listens on a port. The goal was never to harden a complex system against everything that could go wrong with it. The goal was to avoid needing one in the first place.
What's left to get wrong, once that's true, is narrower than a normal blog's list — what the pages carry, what the working directory holds, and the one thing that does arrive from outside.
The one thing that arrives from outside
Writing from a phone means one door does accept bytes from a stranger's own device: scripts/receive.sh, running as the forced command of an SSH key. It listens on nothing — no socket, no daemon, just a key that can run exactly this script and nothing else.