Review pass 3

lib/ui/src/window.rs

@@ -34,6 +34,11 @@ pub enum WindowLifecycle {
 
 #[derive(Clone, Copy, Debug, PartialEq)]
 pub struct WindowConfigured {
+    /// Current logical content size and platform presentation scale.
+    ///
+    /// Backends should emit a new configuration when either the logical size or
+    /// scale changes. This lets hosts relayout for size changes while renderers
+    /// can update drawable/text scale when a window moves between displays.
     pub actual_inner_size: UiSize,
     pub scale_factor: f32,
     pub visible: bool,