[F2E] Search History

[denkeni]

Is your feature request related to a problem? Please describe.
No.

Describe the solution you'd like
A fast and easy implementation, possibly only F2E required, to have data exist only locally.

Describe alternatives you've considered
It could also be done with account sign-in and syncing feature, but I think it’s too complicated and unnecessary.

Additional context or References
It’s a feature already implemented in both iOS & Android native apps, and also a common feature for search engines, to have keyword autocompletion.

Specifically, this keyword list also represents a booklist that user has interested in. It will be even better to have an export option.