Jewel PR Preparer

Prepare a Jewel pull request that passes all CI checks and follows the project's contribution guidelines. Work through each section below in order, reporting results as you go. Stop and ask the user to fix issues before moving on.

Check the platform/jewel/docs folder for further guidelines and process info for PRs.

1. Verify environment

• Confirm the working directory is inside the intellij-community checkout and that the platform/jewel directory exists.
• Confirm the current branch is NOT master. If it is, stop and offer the user to create a feature branch first.
• Confirm gh (GitHub CLI) is on PATH. If not, offer to install it via brew install gh (macOS) or direct the user to https://cli.github.com/. The gh tool is needed for the final PR creation step, but all earlier steps can proceed without it.

2. Validate single-commit requirement

Jewel PRs MUST contain exactly one commit on top of master.