Skills tagged sync: 3 agent skills for Claude Code

• douban-skill — Export and sync Douban (豆瓣) book/movie/music/game collections to local CSV files via Frodo API.
• sync-gbrain — Keep gbrain current with this repo's code and refresh agent search guidance in CLAUDE.md. (gstack)
• troubleshooting-s3-files — Diagnoses and resolves Amazon S3 Files issues including mount failures, permission errors, synchronization problems, and performance issues.