Path practice and complete archive inventory

Read this tree before navigating. The archive contains only the files
listed below. For paper practice, begin in the stated activity directory
and record the working path after entering notes and after cd ..

This is a complete printed inventory, not an extraction record.
desk-demo/
  notes/map.txt = route north (newline)
  receipts/item.txt = pencil (newline)
Example working directory: /home/desk/lab
Example action: cd notes -> predicted /home/desk/lab/notes
Activity: navigate desk-demo/notes then cd .. back to desk-demo.
Question current directory: /home/desk/tasks
Question child directory: receipts
Question action: cd receipts
Record the resulting absolute path, not the activity's real home path.