Hello,

First, thanks for the clear steps in BUILD.md, they helped a lot!

While I just went through the build process using on my system, I ran into a few issues that might be common for new contributors, especially when using IntelliJ.

I'm using:

• IntelliJ IDEA 2024.3.4.1 Community Edition
• Windows 11 (amd64)

And here are some suggestions I'd love to contribute:

What I experienced:

• The build didn't work until I manually selected Temurin 17.0.15 as the JDK inside IntelliJ. Other JDKs (ms-17, etc.) didn't launch the app or caused errors. I’m still not 100% sure why, so if there’s a technical reason for this preference, it could be good to mention that directly?
• I also got this warning in IntelliJ:
  "Duplicate content roots detected" things still worked fine, but it might help to say it's safe to ignore.

Would it make sense to add a small visual guide to BUILD.md with these things?

What I’d love to work on:

• Add a Troubleshooting and Setup Tips section to BUILD.md
• Optionally include screenshots of IntelliJ (JDK selection, warning popup, manual run config setup)
• Maybe even a visual guide that can be launched from the Processing GUI itself? This might become a whole new issue.

Let me know if it would be helpful.

Thanks again!

cc @SableRaf , since you recently updated the BUILD.md, I figured you might have thoughts on this. Happy to draft something and open a PR if that sounds good.