We want PyREPL to syntax highlight Python code, like this: <img width="796" alt="Image" src="https://github.com/user-attachments/assets/5bb47d56-2e80-4a9f-92c8-173f2836f4fb" /> Theming support is planned, but a separate concern. This issue is about enabling syntax to highlight correctly whenever color is used within the REPL anyway. This is a feature for 3.14, with some test and code refactors that we will be bringing back to 3.13 for improved future maintenance. <!-- gh-linked-prs --> ### Linked PRs * gh-131509 * gh-131546 * gh-131547 * gh-131557 * gh-131562 * gh-132270 * gh-132274 * gh-132293 * gh-133247 <!-- /gh-linked-prs -->