🔧 Update script names and conditionally build storybook

frontend/scripts/build-app-assets.js

@@ -0,0 +1,7 @@
+import * as h from "./_helpers.js";
+
+await h.compileStyles();
+await h.copyAssets();
+await h.compileSvgSprites();
+await h.compileTemplates();
+await h.compilePolyfills();