CI4 doesn't support hyphens/dashes in controller subdirectories

Why don't you just set the auto-route to false and define your own route?

Doesn't that necessitate the maintenance of a separate list of url mappings in the routes file? I.e., an extra step that, if done incorrectly, yields a broken url -- and also potentially a bottleneck if you have a bunch of developers adding controllers/methods that require such routing.

The solution I've mentioned is currently adequate. You just have to be careful to name the subdirectory in the Controllers folder using a hyphen and remember to use a underscore in the namespace declaration in your controllers.