- Enhanced maintenance card with dark mode support
- Added system storage information display (logs, database, backups)
- Implemented per-table backup and restore functionality
- Added database table management with drop capability
- Restructured backup management UI with split layout:
- Quick action buttons for full/data-only backups
- Collapsible per-table backup/restore section
- Split schedule creation (1/3) and active schedules list (2/3)
- Fixed database config loading to use mariadb module
- Fixed SQL syntax for reserved 'rows' keyword
- Removed System Information card
- All database operations use correct config keys from external_server.conf
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