D055 - The passcode reaches further than the key blobs, and a test keyed a package differently to find out

The filesystem key, both key blobs, and the AES over the encrypted entries all derive from the passcode. encrypt_licences had it hardcoded to the fake one, so a package built with any other passcode had its entries keyed one way and its blobs pointing another - unopenable by a console or by this crate's own reader.

Nothing would have caught it, because every other test uses the fake passcode. The test that found it builds a package with a different one and reads the key back out the long way.