Extract shared home and environment settings for product reuse

packages/ui-react/src/index.ts

@@ -30,3 +30,7 @@ export * from "./Window.js";
 export * from "./WorkspaceWindow.js";
 
 export { ProgressBar, type ProgressBarProps } from "./ProgressBar.js";
+export * from "./EnvironmentSettingsWindow.js";
+export * from "./EnvironmentMediaPlaylistEditor.js";
+export * from "./EnvironmentBackgroundMedia.js";
+export * from "./LandingStage.js";