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

hooks/useUserData.ts

@@ -0,0 +1,31 @@
+import { useState, useEffect } from 'react';
+
+const useUserData = () => {
+  const [userData, setUserData] = useState(null);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState(null);
+
+  useEffect(() => {
+    const fetchUserData = async () => {
+      try {
+        const response = await fetch('/api/user/profile');
+        const data = await response.json();
+        setUserData(data);
+      } catch (err) {
+        setError(err);
+      } finally {
+        setLoading(false);
+      }
+    };
+
+    fetchUserData();
+  }, []);
+
+  return {
+    userData,
+    loading,
+    error,
+  };
+};
+
+export default useUserData;