Rename all .txt files in /app/move to .json so that db.json, was.json, and config.json exist and no .txt…

Rename all .txt files in /app/move to .json so that db.json, was.json, and config.json exist and no .txt…: 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.