Careful Deletion: Clean the Desk

Your desk at /root/desk needs clearing, and this is a precision job — the grader checks what REMAINS as strictly as what's gone. Delete: the three scratch files ending in .tmp, and the empty directory empty-box (rmdir handles that one — it only deletes empty directories, which is exactly the safety you want). Survive, untouched: notes.tmp.txt (looks tmp-ish, ends in .txt), tmp-checklist.txt (starts with tmp, isn't one), and the box/ directory with the keepsake inside it. rm has no undo, the look-alikes are planted to punish sloppy patterns, and ls is your preview tool. Slow is smooth, smooth is fast.