A fresh print-only install showed "Pick from the library" as the second
way in — on an instance that has no library, because the library belongs
to the AI module. The button opened an empty picker. It is gone when the
module is off (`hasLibrary`), together with the two smaller "from the
library" links.
In its place: "Try it with a sample photo". It fetches
public/samples/lake-at-dusk.jpg — an original illustration drawn for this,
no third-party material — and sends it through the normal upload, so
everything after it is what happens with a real picture.
Checked in the browser, English and German, on a print-only instance:
no library button, sample loads, the print button enables, the PDF
measures 210.00 x 297.00 mm, no failed request.
