fix: resolve linting errors

- Remove unused parameters in logout route
- Remove unused AnimatePresence import
- Remove unused handleLogout function

app/manage/page.tsx

@@ -1,7 +1,7 @@
 "use client";
 
 import { useState, useEffect, useCallback } from 'react';
-import { motion, AnimatePresence } from 'framer-motion';
+import { motion } from 'framer-motion';
 import { Lock, Loader2 } from 'lucide-react';
 import ModernAdminDashboard from '@/components/ModernAdminDashboard';
 
@@ -157,18 +157,6 @@ const AdminPage = () => {
     }
   }, [authState.csrfToken, authState.isLocked, checkSession]);
 
-  // Handle logout
-  const handleLogout = useCallback(() => {
-    sessionStorage.removeItem('admin_authenticated');
-    sessionStorage.removeItem('admin_session_token');
-    setAuthState(prev => ({
-      ...prev,
-      isAuthenticated: false,
-      showLogin: true,
-      password: '',
-      error: ''
-    }));
-  }, []);
 
   // Handle login form submission
   const handleLogin = async (e: React.FormEvent) => {