Initial commit - Project start (July 17, 2025)

Original: feat: enhance security logging and ensure rate limit blocks are properly tracked

- Add comprehensive logging for rate limit blocks with full request details
  - IP address (with proper proxy detection), user agent, headers, timestamps
  - Rate limit info (current count, limit, remaining, reset time)
  - Separate tracking for auth vs general endpoints

- Enhance authentication failure logging
  - JWT validation failures with detailed error info
  - Admin auth attempts without token
  - Failed token validation with user context
  - All events include IP, path, method, user agent

- Improve Winston logger configuration for production
  - Add automatic log rotation (10MB errors, 50MB combined)
  - Create separate security.log for auth/rate limit events
  - Ensure logs directory exists automatically
  - Add structured JSON format for log aggregation
  - Support container logging with LOG_TO_CONSOLE env var

- Create comprehensive documentation
  - Security logging guide with examples
  - Monitoring recommendations
  - Configuration reference

- Add test script to verify logging functionality

All rate limit settings remain configurable via admin panel:
- Window duration, max requests, auth limits
- Skip authenticated requests option
- Public endpoints only option

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

backend/src/utils/formatters.js

@@ -0,0 +1,40 @@
+/**
+ * Formatters for email content and other text transformations
+ */
+
+/**
+ * Convert plain text line breaks to HTML line breaks
+ * @param {string} text - The text to format
+ * @returns {string} - Text with HTML line breaks
+ */
+function nl2br(text) {
+  if (!text) return '';
+  
+  // Normalize line endings
+  text = text.replace(/\r\n/g, '\n').replace(/\r/g, '\n');
+  
+  // Convert newlines to <br> tags
+  return text
+    .split('\n')
+    .map(line => line.trim())
+    .filter(line => line.length > 0)
+    .join('<br />');
+}
+
+/**
+ * Format welcome message for email templates
+ * @param {string} message - The welcome message
+ * @returns {string} - Formatted message for HTML emails
+ */
+function formatWelcomeMessage(message) {
+  if (!message || message.trim() === '') {
+    return '';
+  }
+  
+  return nl2br(message);
+}
+
+module.exports = {
+  nl2br,
+  formatWelcomeMessage
+};