Here's the complete project structure with all necessary files for immediate compilation:

To compile:

1. Create the folder structure as shown
2. Place each file in its respective location
3. Run gradlew build (Windows) or ./gradlew build (Linux/Mac)
4. The compiled mod will be in build/libs/autotool-1.0.0.jar

Here's the updated client-side only version of the AutoTool mod:

Key changes made:

1. Removed server-side run configuration
2. Added client-side only checks in event handler
3. Simplified mod initialization to only run on client
4. Removed unnecessary server-side classes
5. Updated mod description to clarify it's client-side only