Scheduled messages & Folders

Send messages at a specified time, like Telegram's scheduled messages feature & Folders support

<img width="281" height="587" alt="Image" src="https://github.com/user-attachments/assets/2e6c97f8-d035-4c4e-bfd5-4283a6396c30" />

<img width="280" height="576" alt="Image" src="https://github.com/user-attachments/assets/4f2b39fb-4174-4e0f-bab2-0391594a9e48" />