chore: add example env file, improve documentation and code comments

middleware/securityMw.js

@@ -4,13 +4,13 @@ const fetch = require('node-fetch');
 
 module.exports = {
     formSecurityCheck: async (req, res, next) => {
-        // 1. Honeypot check (first line of defense)
+        // 1. Honeypot check
         if (req.body.url) {
             console.warn('Bot detected! Honeypot field was filled.');
             return res.status(200).json({ success: true, message: 'Thank you for your submission.' });
         }
         
-        // 2. hCaptcha verification (second line of defense)
+        // 2. hCaptcha verification
         const hCaptchaResponse = req.body.hCaptchaResponse;
         if (!hCaptchaResponse) {
             return res.status(400).json({ success: false, message: 'CAPTCHA token missing.' });
@@ -36,7 +36,6 @@ module.exports = {
                 return res.status(400).json({ success: false, message: 'CAPTCHA verification failed. Please try again.' });
             }
             
-            // If all checks pass, move to the next middleware or controller
             next();
             
         } catch (error) {