WisePrior

ENFORCEMENT: Strictly reviews and enforces Android code architecture. Mandatory Clean Architecture, UI passivity, and ViewModel responsibilities.

ENFORCEMENT: Scaffolds a complete, production-ready feature. Enforces Clean Architecture, Resource-First UI, guardian-clean-code principles, and MANDATORY testing from the start.

ENFORCEMENT: Strictly improves code quality by fixing architecture violations, eliminating testability blockers, and adding missing tests. Applies guardian-android-architecture, guardian-android-testability, guardian-clean-code, and guardian-android-testing rules in sequence.

Step-by-step guide for upgrading an Android project from AGP 8.x to AGP 9. Covers dependency requirements (KSP 2.3.6+, Hilt 2.59.2+), migration from kapt to KSP, built-in Kotlin migration, new AGP 9 DSL changes, BuildConfig handling, and gradle.properties cleanup. Use this skill when asked to upgrade the Android Gradle Plugin to version 9, migrate from kapt to KSP, or adopt the new built-in Kotlin support in AGP 9. Does NOT apply to Kotlin Multiplatform projects.

Guides migration from Jetpack Navigation 2 to Navigation 3 and teaches how to implement Navigation 3 patterns: type-safe routes, multiple back stacks, deep links, scenes (dialogs, bottom sheets, list-detail), conditional navigation, returning results from flows, and integration with Hilt and ViewModel. Use this skill when working with navigation in this multi-module project or when asked to migrate from navigation-compose 2.x to Navigation 3.