In /app/move, rename every .txt file to .json, producing db.json, was.json, and config.json.

In /app/move, rename every .txt file to .json, producing db.json, was.json, and config.json.: a task in rts-1k-rootless-apptainer: RTS-1K: offline rootless Apptainer release (Harbor dataset). What the agent is asked, how it is graded, what it runs in, and its files.