Supported versions

Seven release branches, one per Minecraft version. Each one is pinned to its Fabric API and Mod Menu builds and has its own CI workflow, so a jar can be built and published for that version alone.

Support matrix

Branches and artifacts
Branch	Minecraft	Java	Mappings	Artifact
1.21.8	1.21.8	21	Yarn 1.21.8+build.1	`cleanmcmod-0.2.0+1.21.8.jar`
1.21.9	1.21.9	21	Yarn 1.21.9+build.1	`cleanmcmod-0.2.0+1.21.9.jar`
1.21.10	1.21.10	21	Yarn 1.21.10+build.3	`cleanmcmod-0.2.0+1.21.10.jar`
1.21.11	1.21.11	21	Yarn 1.21.11+build.6	`cleanmcmod-0.2.0+1.21.11.jar`
26.1	26.1	25	unobfuscated	`cleanmcmod-0.2.0+26.1.jar`
26.2	26.2	25	unobfuscated	`cleanmcmod-0.2.0+26.2.jar`
26.3	26.3	25	unobfuscated	`cleanmcmod-0.2.0+26.3.jar`

Java requirements

1.21.x branches: Java 21, Yarn mappings, remapping Loom (fabric-loom)
26.x branches: Java 25, official class names, non-remapping Loom (net.fabricmc.fabric-loom)
Gradle and Loom: always run on JDK 25, on every branch
fabric.mod.json: declares java >= 21 on 1.21.x and java >= 25 on 26.x

Why two toolchains: Minecraft 26.1 and newer ship unobfuscated, so there are no Yarn mappings and no remap step; the code compiles against the official names instead. That is why the 26.x line lives on separate branches rather than in one source tree with the 1.21.x line.

Release notes

Each branch builds exactly one jar: ./gradlew clean build in the branch, artifact in build/libs/.
That jar is the file published on Modrinth for its game version (loader: Fabric, environment: client).
CI builds and tests every branch on each push; the workflows are build-<version>.yml.
Every GitHub release carries all seven jars, built from the version branches by the release workflow.
Only the latest version (26.3) is tested in game; the others are provided as is.
The project icon is logo.png at the repository root, with a 64 pixel variant in logo-64.png.
Mod Menu is optional on every branch: the jar only suggests it.