In just one major bored morning, I made huge progress with the passwords store component. You can now enter notes, the content will be filtered out and strong formatting will be stripped from regular view. Editing a note works, as does showing the list and the entry.
The piece missing now is the cookie for the passphrase storage. There I need to add the page that requests the passphrase, the one that allows you to create the passphrase, and the session cookie that will store the passphrase, encrypted using the master passphrase and the day (so that cookies expire every day).