Fix admin login - accept both fullName and full-name form fields

Form sends 'full-name' but server expected 'fullName'.
Now accepts both formats for compatibility.

server.js

@@ -260,7 +260,8 @@ app.post('/api/contact', async (req, res) => {
 // Admin login (creates admin on first login if none exist)
 app.post('/api/admin/login', async (req, res) => {
   try {
-    const { email, password, fullName } = req.body;
+    const { email, password, fullName, 'full-name': fullNameHyphen } = req.body;
+    const name = fullName || fullNameHyphen;
 
     if (!email || !password) {
       return res.status(400).json({ error: 'Email and password are required' });
@@ -272,14 +273,14 @@ app.post('/api/admin/login', async (req, res) => {
 
     if (isFirstAdmin) {
       // Create first admin
-      if (!fullName) {
+      if (!name) {
         return res.status(400).json({ error: 'Full name is required for first admin creation' });
       }
 
       const hashedPassword = await bcrypt.hash(password, 10);
       const result = await pool.query(
         'INSERT INTO admins (email, password_hash, full_name) VALUES ($1, $2, $3) RETURNING id, email, full_name',
-        [email, hashedPassword, fullName]
+        [email, hashedPassword, name]
       );
 
       const admin = result.rows[0];