From the maintainer Li Haoyi: I'm putting a 500USD bounty on this issue, payable by bank transfer on a merged PR implementing this.

These should live in example/kotlinlib/web/6-hello-spring-boot and example/kotlinlib/web/7-todo-spring-boot, basically a kotlin version of example/javalib/web/2-hello-spring-boot example/javalib/web/3-todo-spring-boot but using Kotlin instead of Java

No need for any KotlinJS or other fancy stuff, just a vanilla spring boot web app with server side templates and some vanilla CSS and javascript