When you delete cards or whiteboards in Heptabase, they're moved to the Trash.
To access the Trash:
Click the Space name in the top-left corner of your desktop or web app, then click Trash.
Or press Cmd/Ctrl + K to open the command palette, then search for Trash.
Inside Trash, you'll see all your deleted items. To restore a card or whiteboard, click on it and select Restore. You can also permanently delete items here.
To clear all items at once, click the Empty Trash button.
Important: Once items are permanently deleted, you won't be able to recover them from their version history.