[Easy] Validator for Pagination Cursors

[keepsloading]

Ensure cursor tokens cannot be manipulated for SQL injection or bypass.

[keepsloading]

Friendly reminder for SSoC26 contributors: When you submit a Pull Request for this issue, please remember to also raise a dummy PR in the Memact/Context repository that references your original PR. This is required for your contribution to be considered for points on the SSoC leaderboard!

[Mohammad-Hassan027]

Hi @keepsloading , I would love to work on this issue! Could you please assign it to me? I'm ready to get started.