LopyMine/MossyLib — reverse-engineered prompt

Build me a simple Minecraft mod library called MossyLib that I can reuse across my other mods.

I want it to be a shared utility project with the common code pulled into one place, so it’s easier to make and maintain my mods. It should include a custom YACL based settings screen theme that matches my projects, some general purpose helper utilities, and a clean setup for supporting multiple Minecraft versions and multiple mod loaders, specifically Fabric and Forge or NeoForge.

Please make it feel like a real reusable library, not just a demo. Set it up so the shared code is organized well, version support is practical, and it can be built and used by my other mods without a lot of extra work. If there are places where the exact implementation depends on current modding docs, look those up and use the current recommended approach.

Keep the project focused on being a lightweight common library for Mossy style mods.