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 f756f84..1346606 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -4,7 +4,7 @@ use wayland_client::QueueHandle;
 use glyphon::FontSystem;
 use cce_ui::engine::{Application, EngineState, LogicalPosition, LogicalSize, WindowSettings};
 use cce_ui::widget::{
-    MouseButton, ElementState, MouseScrollDelta, KeyEvent, Element,
+    MouseButton, ElementState, MouseScrollDelta, KeyEvent, WidgetHost,
     TextBox, Button, TextLabel, Key, Paginator, PageSelector, MenuController
 };
 use cce_ui::context::UiContext;