Generate a custom error using Nushell by applying the schema at /app/error-schema.nuon.

Generate a custom error using Nushell by applying the schema at /app/error-schema.nuon.: 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.