A track picked on one episode now carries over to the next by its title as
well as its language, so e.g. "Signs & Songs" vs "Full" subtitles in the same
language stick. Catalog migration V8 adds the title columns; the Android
bridge keeps a stored title only while its language is unchanged.
B14-B42 record the Android review the theme and lifecycle work came out of.
DESIGN-TOKENS.md states what both clients agree on and where each keeps its
copy.
nvrl