In the /app directory, use the extra-array npm package to demonstrate the in-place copy behavior of…

In the /app directory, use the extra-array npm package to demonstrate the in-place copy behavior of…: 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.