Fix notification history timestamps to display in local timezone with timezone indicator

Author: blink-zero

CHANGELOG.md

@@ -23,6 +23,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - Enhanced logging for better troubleshooting of time filter issues
 - Fixed notification history timestamps to match the timezone shown on the dashboard:
   - Updated date formatting in NotificationHistory component to use consistent formatting options
+  - Added explicit timezone display to make the local timezone clear to users
   - Ensured consistent date display format across the application
 
 ### Improved

client/src/components/notifications/NotificationHistory.jsx

@@ -47,12 +47,16 @@ const NotificationHistory = () => {
 
   // Helper function to format date
   const formatDate = (dateString) => {
+    // Parse the UTC date string and convert to local timezone
     const date = new Date(dateString);
+    
+    // Format the date in the local timezone
     return date.toLocaleString([], {
       month: 'short',
       day: 'numeric',
       hour: '2-digit',
-      minute: '2-digit'
+      minute: '2-digit',
+      timeZoneName: 'short' // Add timezone name to make it clear
     });
   };