Authoring guide for the Kraft KSP automapper library (com.blu3berry.kraft) in Kotlin/KMP. Covers the decision tree for @MapConfig, @MapEnum, @KraftConverter, and @MapUsing (including whole-source mode for decompose/compose/constant/default patterns); reverse mapping with @MapReverse; the Gradle plugin and kraft { } DSL (side aliases, functionNameFormat, moduleId); placement and naming conventions; and the kmpgen-DTO interaction gotchas (K1, K-A1). Use this skill whenever writing or reviewing mappers in a project that depends on Kraft. Trigger on phrases like "Kraft mapper", "@MapConfig", "@KraftConverter", "@MapEnum", "@MapReverse", "DTO mapper", "auto-mapper", "side alias", "kraft plugin", or anytime a `*Mappers.kt` file is being authored.
2026-07-20