What a caller opening the viewer on a list declares about the session: the
two ids the app mints when the viewer opens and the watched percentage it
measured. A caller that holds such values (a scene) declares them;
one that holds none declares nothing and the viewer mints the ids its like
and comment must carry. The per-reel facts are not declared: the seed is the
tapped reel's container id and the positions are its index in the list.
What a caller opening the viewer on a list declares about the session: the two ids the app mints when the viewer opens and the watched percentage it measured. A caller that holds such values (a scene) declares them; one that holds none declares nothing and the viewer mints the ids its like and comment must carry. The per-reel facts are not declared: the seed is the tapped reel's container id and the positions are its index in the list.