GitHub skill-repo sync cron troubleshooting — class-level pitfalls encountered when running the daily `github-release-readme` pipeline against jorinyang/awesome-skills from a Windows cron host. Use when the sync shows unexpected sync candidates, deletes tracked files, double-counts or under-counts skills, or fails to rebase correctly. Each pitfall has a tested recipe. Captures class-level patterns; session-specific incidents belong in `references/execution-log-YYYY-MM-DD.md`.
