Config GC provides a garbage collection workflow for your Claude Code configuration by periodically scanning ~/.claude directories including skills, memory, hooks, permissions, MCP servers, and caches. It flags redundant, stale, or orphaned items and guides the user through a safe, confirm-each-deletion cleanup process that utilizes soft-deletes and maintains a detailed log. Reach for it when the user wants to audit their setup, slim down a bloated configuration, or clean up overlapping skills.