- Add `Heartbeat` column to `/X/Inventory.php` with status-based row styling.
- Improve error handling and data validation for backup details in `Server-Detail.php`.
- Update comments in `Server-Detail.php` to reflect current tools
- Introduce AIX/Linux backup details in `Server-Detail.php`
- Add `/X/inventory.php` for AIX/Linux server inventory display functionality
- Update `navbar.html` to include link to the new server inventory page