Well, what difference is there between “static assets” and “full websites”? Back in my day, all websites were just static assets (…kids these days…). :-D

The use case is linked above: a set of static HTML files (machine-generated, but plain static HTML) in a directory, available under the relevant IDs (the files contain the relevant links for individual political parties in the Czech Republic, linked using https://www.wikidata.org/wiki/Property:P11031); and next to them, there is an index file containing their list in a human-readable format, so that you can go and find the relevant ID easily.

On IRC, I have later learned that this is just a small difference between the default configuration of lighttpd used for the PHP server, and the default configuration of nginx used for the static server: lighthttpd uses index.php index.html index.htm, while nginx uses just index.html. So had I named the index file index.html instead of index.htm, it would work correctly.

So… this is really a low-impact request, basically just saying “there is a surprising difference in configuration between lighttpd and nginx, which probably should be corrected and index.htm added to the nginx configuration to unify them”. Nothing critical.