Fix reasoning effort title (#4694)

codex-rs/tui/src/chatwidget.rs

@@ -1640,9 +1640,9 @@ impl ChatWidget {
         }
 
         self.bottom_pane.show_selection_view(SelectionViewParams {
-            title: Some("Select Model".to_string()),
+            title: Some("Select Model and Effort".to_string()),
             subtitle: Some("Switch the model for this and future Codex CLI sessions".to_string()),
-            footer_hint: Some(standard_popup_hint_line()),
+            footer_hint: Some("Press enter to select reasoning effort, or esc to dismiss.".into()),
             items,
             ..Default::default()
         });