UI tweaks for match columns step + auto hide empty columns

inventory-server/old/test-connection.js

@@ -1,22 +0,0 @@
-const express = require('express');
-const router = express.Router();
-const { testConnection } = require('../../scripts/test-prod-connection');
-
-router.get('/test-prod-connection', async (req, res) => {
-  try {
-    const productCount = await testConnection();
-    res.json({ 
-      success: true, 
-      message: 'Successfully connected to production database',
-      productCount 
-    });
-  } catch (error) {
-    console.error('Production connection test failed:', error);
-    res.status(500).json({ 
-      success: false, 
-      error: error.message || 'Failed to connect to production database' 
-    });
-  }
-});
-
-module.exports = router;