feat(editor): run CSS processing via tsdown onSuccess hook (#3121)

Co-authored-by: Cursor Agent <cursoragent@cursor.com>

Author: gabrielmfern

packages/editor/package.json

@@ -79,7 +79,7 @@
   },
   "license": "MIT",
   "scripts": {
-    "build": "tsdown && pnpm run build:css",
+    "build": "tsdown",
     "build:css": "tsx scripts/copy-css.ts",
     "build:watch": "tsdown --watch",
     "clean": "rm -rf dist",

packages/editor/tsdown.config.ts

@@ -12,4 +12,5 @@ export default defineConfig({
   format: ['esm', 'cjs'],
   dts: true,
   external: ['react', 'react-dom'],
+  onSuccess: 'pnpm build:css',
 });