Safely triage committed-but-junky files in a git repo — ephemeral SQLite DBs, stray JSON artifacts, intermediate skill outputs, plan documents at the project root — moving keepers to a sensible home, deleting the rest with `git rm` plus `.gitignore` updates, never disturbing source. Use when "clean up my repo", "the repo junk cleaner", "tidy up the project root", "random `.db` / `.md` files committed", or when an agent swarm leaves ephemeral artifacts in the working tree.