init: first version of cca viewer

astro.config.mjs

@@ -0,0 +1,9 @@
+// @ts-check
+import { defineConfig } from 'astro/config';
+
+import react from '@astrojs/react';
+
+// https://astro.build/config
+export default defineConfig({
+  integrations: [react()]
+});