Cleaning up some warnings on website build

Author: aaronpowell

website/astro.config.mjs

@@ -115,7 +115,12 @@ export default defineConfig({
   trailingSlash: "always",
   vite: {
     build: {
-      sourcemap: true,
+      // Production sourcemaps trigger a known warning in the expressive-code Vite plugin.
+      // The docs site does not need emitted JS sourcemaps for its validation build.
+      sourcemap: false,
+      // Starlight ships large syntax-highlighting chunks that are expected for this site.
+      // Raise the threshold so Vite only warns on materially larger regressions.
+      chunkSizeWarningLimit: 900,
     },
     css: {
       devSourcemap: true,