Android View utilities shared between paginator-view-offset and paginator-view-cursor. Contains the scroll-position preservation primitives (RecyclerViewScrollSnapshotRegistry, attachScrollPreservation helper) that back the `preserveScroll = true` parameter on bindToRecyclerView, plus the shared binding primitives (ScrollBinding, ScrollDispatcher, PrefetchErrorChannel). Depends only on paginator-core (for the ScrollWindow index-remapping math); independent of paginator-offset and ...