Can I refer version catalog in settings? assume i have

gradle/libs.versions.toml

with:

[versions]
micronaut = "4.2.0"

can i then refer to this in

settings.gradle.kts

like:

dependencyResolutionManagement {
    versionCatalogs {
        create("mn") {
            from("io.micronaut.platform:micronaut-platform:${libs.versions.micronaut}")
        }
    }
}

I would have single source for all versions and catalogs used within projects, to easily handle pulling of those and have automated version management (renovate). I could potentially write convention settings plugin but this only moves problem to another layer.

No, version catalogs are defined when executing the settings script, so you cannot use them during settings script execution.

Why do you need to store the version in libs? Just put them in the code, renovatebot/dependabot is able to update the syntax too.