Fix time format-desc to match Fail2ban's format

pkg/web/static/js/validation.js

@@ -2,11 +2,12 @@
 
 function validateTimeFormat(value, fieldName) {
   if (!value || !value.trim()) return { valid: true }; // Empty is OK
-  const timePattern = /^\d+[smhdwmy]$/i;
+  // Support: s (seconds), m (minutes), h (hours), d (days), w (weeks), mo (months), y (years)
+  const timePattern = /^\d+([smhdwy]|mo)$/i;
   if (!timePattern.test(value.trim())) {
     return { 
       valid: false, 
-      message: 'Invalid time format. Use format like: 1h, 30m, 2d, 1w, 1m, 1y' 
+      message: 'Invalid time format. Use format: 1m = 1 minute, 1h = 1 hour, 1d = 1 day, 1w = 1 week, 1mo = 1 month, 1y = 1 year'
     };
   }
   return { valid: true };