Initialize environment variables and enhance email configuration logging

- Added dotenv to load environment variables from a .env file in server.js.
- Updated SMTP configuration in email-handler.ts with default values for better development setup.
- Implemented debug logging for email configuration to assist in troubleshooting during development.

server.js

@@ -1,3 +1,7 @@
+// Load environment variables from .env file first
+import dotenv from 'dotenv';
+dotenv.config();
+
 import express from 'express';
 import compression from 'compression';
 import { handler } from './dist/server/entry.mjs';