refactor: adapt Switcher/ContentBg fields to cce-ui Phase 5n

Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01LkfJazPs9bRchkcozmxXCX

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

diff --git a/src/main.rs b/src/main.rs
index 9286a81..89091c0 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -332,7 +332,7 @@ impl Element for SessionList {
 
 // ── App State and Renderer ──
 struct State {
-    bg: ContentBg,
+    bg: cce_ui::widget::Adapted<ContentBg>,
     card: LoginCard,
     username_box: TextBox,
     password_box: TextBox,