Remove debug login page and refactor TransactionsTable to utilize new utility functions and cell renderers for improved code organization and maintainability.

src/index.js

@@ -27,12 +27,7 @@ app.get('/api/health', (req, res) => {
   res.json({ status: 'OK', timestamp: new Date().toISOString() });
 });
 
-// Debug login page (development only)
-if (process.env.NODE_ENV !== 'production') {
-  app.get('/debug-login', (req, res) => {
-    res.sendFile(path.join(__dirname, '../debug-login.html'));
-  });
-}
+
 
 // Serve static files in production
 if (process.env.NODE_ENV === 'production') {