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web/src/main.tsx

@@ -0,0 +1,16 @@
+import { StrictMode } from 'react';
+import { createRoot } from 'react-dom/client';
+
+// No webfonts: the styling copies GitHub, and GitHub renders its UI and its
+// diffs in the platform's own system and monospace faces.
+// Import the library's base diff styles BEFORE ours so our overrides win.
+import 'react-diff-view/style/index.css';
+import './styles.css';
+
+import App from './App';
+
+createRoot(document.getElementById('root')!).render(
+  <StrictMode>
+    <App />
+  </StrictMode>,
+);