[feat] Add backup/restore data feature via UI

[tuthanika]

Is your feature request related to a problem? Please describe.
A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]

• Right now, users don’t have a simple way to back up or restore their data directly from the UI.

Describe the solution you'd like
A clear and concise description of what you want to happen.
I’d love to see a feature in the UI that allows:

• Quick creation of data backups.
• Easy restoration from a backup with just a few clicks.

Describe alternatives you've considered

• Using command-line tools or external scripts, but these aren’t user-friendly for most people.
• Manually copying data, which is error-prone and doesn’t guarantee integrity.

Additional context
Add any other context or screenshots about the feature request here.