Initial commit: Complete NodeJS-native setup

- Migrated from Python pre-commit to NodeJS-native solution
- Reorganized documentation structure
- Set up Husky + lint-staged for efficient pre-commit hooks
- Fixed Dockerfile healthcheck issue
- Added comprehensive documentation index

index.tsx

@@ -0,0 +1,18 @@
+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import App from './App';
+import { UserProvider } from './contexts/UserContext';
+
+const rootElement = document.getElementById('root');
+if (!rootElement) {
+  throw new Error('Could not find root element to mount to');
+}
+
+const root = ReactDOM.createRoot(rootElement);
+root.render(
+  <React.StrictMode>
+    <UserProvider>
+      <App />
+    </UserProvider>
+  </React.StrictMode>
+);