Surface a like is tapped on. It selects the analytics field set the app
attaches to the signed body: the feed surfaces (feed_timeline,
feed_short_url) carry inventory_source and logging_info_token, the reels
viewer carries the chaining_* session fields and media_pct_watched, and
the home timeline its own carousel-child layout
(MediaLikeGraphqlInput's 'timeline' member, the GraphQL build's).
Surface a like is tapped on. It selects the analytics field set the app attaches to the signed body: the feed surfaces (
feed_timeline,feed_short_url) carryinventory_sourceandlogging_info_token, the reels viewer carries thechaining_*session fields andmedia_pct_watched, and the home timeline its own carousel-child layout (MediaLikeGraphqlInput's'timeline'member, the GraphQL build's).