From sign-in to a printed quote, even offline

Sign in with an email code, set up your business, write a quote with no connection and print it. Changes sync when you are back online.
This is the first time all the pieces work together: sign-in, your workspace, exact totals, the A4 PDF and a queue that keeps your changes until they can be sent.
Pinzell tells you where your data is. "Saved on this device" means it has not reached the cloud yet; "Synced" only appears once the server has confirmed it.
Still to come before the pilot: testing on a real Android phone and a real printer.