Fix button roundtrip in editor, alignment persistence, and test email rendering

admin-spa/src/routes/Appearance/Pages/components/section-renderers/index.ts

@@ -0,0 +1,6 @@
+export { HeroRenderer } from './HeroRenderer';
+export { ContentRenderer } from './ContentRenderer';
+export { ImageTextRenderer } from './ImageTextRenderer';
+export { FeatureGridRenderer } from './FeatureGridRenderer';
+export { CTABannerRenderer } from './CTABannerRenderer';
+export { ContactFormRenderer } from './ContactFormRenderer';