Add complete Biblical Guide web application with Material UI

Implemented comprehensive Romanian Biblical Guide web app:
- Next.js 15 with App Router and TypeScript
- Material UI 7.3.2 for modern, responsive design
- PostgreSQL database with Prisma ORM
- Complete Bible reader with book/chapter navigation
- AI-powered biblical chat with Romanian responses
- Prayer wall for community prayer requests
- Advanced Bible search with filters and highlighting
- Sample Bible data imported from API.Bible
- All API endpoints created and working
- Professional Material UI components throughout
- Responsive layout with navigation and theme

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

hooks/use-auth.ts

@@ -0,0 +1,44 @@
+import { useEffect } from 'react'
+import { useStore } from '@/lib/store'
+
+export function useAuth() {
+  const { user, setUser } = useStore()
+
+  useEffect(() => {
+    const token = localStorage.getItem('authToken')
+    if (token && !user) {
+      // Validate token and get user info
+      fetch('/api/auth/me', {
+        headers: {
+          'Authorization': `Bearer ${token}`
+        }
+      })
+      .then(res => res.json())
+      .then(data => {
+        if (data.user) {
+          setUser(data.user)
+        } else {
+          localStorage.removeItem('authToken')
+        }
+      })
+      .catch(() => {
+        localStorage.removeItem('authToken')
+      })
+    }
+  }, [user, setUser])
+
+  const logout = () => {
+    setUser(null)
+    localStorage.removeItem('authToken')
+  }
+
+  const isAuthenticated = !!user
+  const token = typeof window !== 'undefined' ? localStorage.getItem('authToken') : null
+
+  return {
+    user,
+    isAuthenticated,
+    token,
+    logout
+  }
+}