Prepare for the 26.1 release series

[BlockyTheDev]

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[BlockyTheDev]

@copilot Please code review

[Copilot]

Pull request overview

Prepares the project for the Minecraft/Fabric 26.1 release series by updating build tooling, dependency versions, and adapting mixins/commands to upstream API changes.

Changes:

• Bump build/runtime requirements (Gradle wrapper, Loom, Fabric Loader/API, Java toolchain/GitHub Actions Java).
• Update mixins to match new Minecraft rendering/chat method signatures and introduce a new renderer mixin.
• Update command registration API usage (ClientCommandManager → ClientCommands) and adjust metadata/docs for the new target series.

Reviewed changes

Copilot reviewed 12 out of 14 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/main/resources/fabric.mod.json	Updates dependency constraints (loader, Minecraft range, Java level).
src/main/resources/communityradar.mixins.json	Raises mixin compatibility level and adds EntityRendererMixin.
src/main/java/io/github/communityradargg/fabric/mixin/EntityRendererMixin.java	New hook to modify name tag submission.
src/main/java/io/github/communityradargg/fabric/mixin/ChatComponentMixin.java	Updates injected method descriptor for addMessage.
src/main/java/io/github/communityradargg/fabric/mixin/AvatarRendererMixin.java	Removes old name-tag ModifyArg logic; keeps UUID extraction hook.
src/main/java/io/github/communityradargg/fabric/commands/RadarCommand.java	Migrates client command builder to ClientCommands.
gradlew	Wrapper script metadata update (pinned template commit).
gradle/wrapper/gradle-wrapper.properties	Updates Gradle distribution to 9.4.1.
gradle/wrapper/gradle-wrapper.jar	Wrapper jar updated/added for the new Gradle version.
gradle/libs.versions.toml	Updates Minecraft/Fabric versions and Loom plugin coordinates.
gradle.properties	Updates mod_version to the 26.1 stream.
build.gradle.kts	Updates dependencies/toolchain/release settings for Java 25 and 26.1.
README.md	Removes hardcoded Minecraft version from the title.
.github/workflows/build.yml	Updates CI actions versions and Java version.

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