Categorize Reverse Dependency Issues

Write revdep/issue.md to group packages by common error categories based on the error output in revdep/problems.md and revdep/failures.md.

What This Skill Does

This skill analyzes reverse dependency check results and writes out an issue tracking file to group packages by their error types, making it easier to:

• Identify common problems across packages
• Understand which issues are dplyr-related vs external dependencies
• Prioritize fixes based on error patterns
• Provide clear guidance to package maintainers

Files Involved

Input files:

• revdep/README.md - The New problems section lists the packages to group
• revdep/problems.md - Detailed error output for packages with test/check issues
• revdep/failures.md - Installation failures and error messages