feat: consolidate shared UI and harden browser authority for release

webui/vite.conformance.config.ts

@@ -4,9 +4,13 @@ import react from "@vitejs/plugin-react";
 
 export default defineConfig({
   root: resolve(import.meta.dirname, "conformance"),
+  // Vite derives its default cache from the nearest package.json, not root.
+  // Keep browser fixtures separate from the concurrently running application.
+  cacheDir: resolve(import.meta.dirname, "node_modules/.vite/govoplan-conformance"),
   plugins: [react()],
   resolve: {
     alias: {
+      "@govoplan/core-webui/wysiwyg": resolve(import.meta.dirname, "src/wysiwyg.ts"),
       "@govoplan/core-webui": resolve(import.meta.dirname, "conformance/QuickAccessCoreFacade.ts"),
       "virtual:govoplan-installed-modules": resolve(import.meta.dirname, "conformance/installedModules.ts"),
       react: resolve(import.meta.dirname, "node_modules/react"),