Flashcard Management Improvements: Multi-Select, Move, and Cross-Deck Copy Features

I would like to suggest several improvements regarding flashcard management in Memo AI. Currently, organizing decks is quite limited, and adding more flexible management tools would significantly improve workflow efficiency, And especially for users who do not use Anki as the main application and remain entirely on Memocards AI.

First, it would be extremely helpful to have the ability to move one or multiple flashcards from one deck to another. When reorganizing content, users often need to restructure decks, and the absence of a transfer feature makes this process unnecessarily time-consuming.

Second, adding a multi-selection feature would greatly enhance usability. Being able to select several flashcards at once and apply actions to all of them simultaneously (move, delete, duplicate, tag, etc.) would streamline deck management and reduce repetitive manual work.

Finally, the option to copy and paste flashcards between different decks would be very valuable. Many users need to reuse certain cards across multiple decks (for example, general concepts appearing in different subjects). A duplication or copy-to-another-deck function would make this much more efficient.

These features would substantially improve flexibility, organization, and productivity for users who work with large volumes of flashcards.