The feed in Comfortable (one full-width card per row on the phone: 16:9 landscape, 4:5 portrait) and Compact (list rows), the toolbar row with the “Newest ▾” sort menu and the view toggle, infinite-scroll footers, every empty and error state, offline, favorites, selection mode with “Add to queue / Add to playlist / Delete”, and delete with undo. The chip row and the Watch Later clock buttons are drawn in their final form (Watch Later and the playlist chips arrive with E8). Phone 375×812, dark theme; desktop 1280×800, scaled down.