Nice article on using CIDER with clj-kondo and refactor-nrepl https://andreyor.st/posts/2025-09-21-replacing-clojure-lsp-with-clj-kondo-and-refactor-nrepl/
Btw, the main reason why refactor-nrepl's development is moving slowly these days is that the project needs more maintainers. I was never very involved in it, and the original maintainers have retired a long time ago, so progress has been pretty slow in recent years.