Make email and phone fields required in color requests

api/server.js

@@ -265,6 +265,13 @@ app.post('/api/color-requests', async (req, res) => {
       reference_url 
     } = req.body;
 
+    // Validate required fields
+    if (!color_name || !material_type || !user_email || !user_phone) {
+      return res.status(400).json({ 
+        error: 'Color name, material type, email, and phone are required' 
+      });
+    }
+
     // Check if similar request already exists
     const existingRequest = await pool.query(
       `SELECT id, request_count FROM color_requests