I've just released an update to Clean Starter Kit, the package and the dotnet template.
This contains a new feature added by Phil Whittaker which sets it up for use with NextJs if you want to. I'll let him write about that for you.
Warren Buckley let me know about a potential security issue, so I've added a fix which strips HTML from the search query when rendering on the page.
All of this has been released in the following packages:
NuGet Packages
Clean v4.2.2 - Umbraco 13
Clean v5.2.2 - Umbraco 15
NuGet Template
Umbraco.Community.Templates.Clean v5.2.0 - Umbraco 15 dotnet template