md-review

Run the standard markdown review loop end-to-end with the mdxg-redline CLI: send a markdown document to a human reviewer, wait (via Bash polling) for the feedback.json they export, then apply their location-aware inline comments back into the markdown and revise it. Always use this skill when the user wants human-in-the-loop review of markdown with structured JSON feedback — e.g. "send this spec out for review",…