Command egnkey stores files in root if output dir already exists

[MegaRedHand]

Describe the bug

When generating keys with egnkey, if the output directory already exists, the keys are stored in the file-system root (/).

To Reproduce

mkdir -p foobar
egnkey generate --key-type ecdsa --num-keys 1 --output-dir foobar
ls foobar  # output dir is empty
ls /keys /private_key_hex.txt /password.txt  # ...because everything is in root

Expected behavior

The keys to be in the output dir

OS details

macOS 15