Note created from card is not deleted.

That's a pretty cool plugin, thanks for that.

When I create a card and then do a "create note from card", the note is created as a separate document in the notebooks. That's as described.

But when I then delete the card in the Kanban board by clicking the burger menu and then "delete", the note is deleted from the Kanban board, but the separate note document that was created is not deleted.

The documentation says:
> When you delete this card, the associated note will also be deleted.

Reproduce the flow by creating a Kanban card, using “create note from card,” and then deleting the card through the burger menu. Trace the card deletion and note-document cleanup behavior, then verify that both the board note and the separate notebook document are removed while preserving the documented behavior.

Written by the indexing model from the issue text.