object-fit was hardcoded to 'cover', which crops portrait photos heavily. Add a
global `slideshow_fit` setting (Settings -> Slideshow): 'cover' fills + crops,
'contain' shows the whole image with black bars (no crop). Default 'cover'
(unchanged). Stored in app_settings (no migration), resolved server-side into
the slideshow settings + /state poll so a running projector picks it up live.
Luca
b5c73e05bd