spring-shell | Spring Shell helps you to create Spring | Application Framework library

You need to use something to package your dependencies into the jar with your code or you need to manually add the dependencies to the classpath at execution. This usually involves something like maven's shade plugin or gradle's shadow plugin.

See How can I create an executable JAR with dependencies using Maven?

This can also be done within intellij but its usually a bad idea to make an ide your build tool.

https://blog.karthicr.com/posts/2016/07/10/creating-an-executable-jar-in-intellij-idea/

With dependencyManagement you only manage dependencies like version, overrides etc. you don't actually add dependencies to a project. For that use dependencies like you use in the other places.

Spring Shell is different than Spring MVC or Spring Boot, it is not a server to run and accept continuous incoming request. Think of it as a command line where you can open it when you need it and close it after you are done.

It is possible to open the shell and not close it. You need to use the screen command -> https://linuxize.com/post/how-to-use-linux-screen/ Just reattach to the screen when needed, instead of creating a new shell instance.