Подготовил к интеграции с битриксом

vite.config.ts

@@ -3,5 +3,9 @@ import react from '@vitejs/plugin-react'
 
 // https://vite.dev/config/
 export default defineConfig({
+  // Needed when the build is served from a subpath (e.g. local/diagram-app/
+  // inside the Bitrix docroot) instead of domain root — see
+  // docs/bitrix-integration.md §7.
+  base: process.env.VITE_BASE_PATH || '/',
   plugins: [react()],
 })