OGVerticalFeedConfig

Configuration for OGVerticalFeedView. Everything is explicit — the feed never infers behavior from content. The player pool holds at most preloadAhead + keepBehind + 1 (≤ 3) engine instances; preloaded items buffer on a capped standby profile so memory stays predictable.

The feed ships BARE by design: no built-in rail buttons. The right rail is a placeholder for up to 6 host RailActions per item; title/subtitle are opt-in via showTitle/showSubtitle. Feed-level mute is driven through OGVerticalFeedState.