refactor: Element -> WidgetHost (cce-ui 6bd flip)

Mechanical rename; the god-trait name is gone workspace-wide.

Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_018u7qTwzX95dd5ysAkaSCLk

 src/main.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main.rs b/src/main.rs
index dd73313..f89ceca 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,6 +1,6 @@
 use cce_ui::engine::{Application, WindowSettings, LogicalSize, LogicalPosition, EngineState};
 use cce_ui::widget::{
-    Adapted, Button, Element, EventCtx, UiContext, MouseButton, ElementState, KeyEvent,
+    Adapted, Button, WidgetHost, EventCtx, UiContext, MouseButton, ElementState, KeyEvent,
     MouseScrollDelta, Event,
 };
 use cce_ui::layout::RenderTarget;