webmail-client/frontend/src/main.tsx

import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
import React from "react";
import ReactDOM from "react-dom/client";
import { BrowserRouter } from "react-router-dom";

import { App } from "./App";
import { I18nProvider } from "./i18n";
import { ThemeProvider } from "./lib/theme";
import "./index.css";
import "./plugins/plugin-ui.css"; // .wm-* classes for plugin bundles (SPEC §11.3)

const queryClient = new QueryClient({
  defaultOptions: { queries: { retry: false, refetchOnWindowFocus: false } },
});

ReactDOM.createRoot(document.getElementById("root")!).render(
  <React.StrictMode>
    <ThemeProvider>
      <I18nProvider>
        <QueryClientProvider client={queryClient}>
          <BrowserRouter>
            <App />
          </BrowserRouter>
        </QueryClientProvider>
      </I18nProvider>
    </ThemeProvider>
  </React.StrictMode>,
);