Add basic test API without external dependencies

pages/api/test-basic.js

@@ -0,0 +1,22 @@
+export default function handler(req, res) {
+  // Set CORS headers
+  res.setHeader('Access-Control-Allow-Origin', '*');
+  res.setHeader('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS');
+  res.setHeader('Access-Control-Allow-Headers', 'Content-Type, Authorization');
+
+  // Handle preflight requests
+  if (req.method === 'OPTIONS') {
+    res.status(200).end();
+    return;
+  }
+
+  // Simple response without any external dependencies
+  res.status(200).json({
+    success: true,
+    message: 'Basic API is working!',
+    timestamp: new Date().toISOString(),
+    method: req.method,
+    url: req.url,
+    headers: Object.keys(req.headers)
+  });
+}