chrisbanes/skills ? reverse-engineered prompt

Build me a polished repository for a collection of AI agent skills focused on Kotlin, Jetpack Compose, Android development, and grounded writing.

I want it to work as a portable Agent Plugins package, so people can install it in tools like Claude Code, Codex, and OpenCode, and the skills should be easy to discover and use from the main skills folder. Please make the documentation clear for setup, usage, and what each skill is for, with a friendly README that helps someone pick the right skill quickly.

It should feel like a real public project, with good examples, sensible structure, and enough tests or checks to keep the package healthy. If anything depends on current tool docs or plugin format details, look them up online and follow the latest guidance. Keep the writing practical and grounded, since part of the project is helping agents write and reason well, not just shipping code.