/* Entry point — loads data, mounts app. */ const Root = () => { const [data, setData] = React.useState(null); const [err, setErr] = React.useState(null); const [tweaks, setTweak] = useTweaks(window.TweakDefaults); React.useEffect(() => { loadData().then(setData).catch(e => setErr(String(e))); }, []); // setTweaks accepts a partial object: {theme: 'dark', density: 'compact'} const setTweaks = (patch) => { Object.entries(patch).forEach(([k, v]) => setTweak(k, v)); }; if (err) return