Gradle → Kotlin Toolchain Project Migration

Two jobs at once: a mechanical translation of dependencies and configuration, plus a replacement for every Gradle plugin the Toolchain has no native answer for. Templates to adapt are in references/examples.md, drawn from one real migration.

Lean on the companion skills for the plugin-shaped subproblems: kotlin-toolchain for syntax, gradle-to-kotlin-toolchain-plugin for the per-plugin port workflow (you will run it once per Gradle plugin without a native equivalent), kotlin-toolchain-plugin-authoring for plugins written from scratch.

Principles