Multiple delete and archiving

Please add the ability to select multiple conversations in the chat history and delete them in one operation.

Currently, conversations must be deleted individually, which is inconvenient when cleaning up a large chat history.

Ideally, users should be able to:

  • Select individual conversations using checkboxes.

  • Select multiple conversations.

  • Delete or archive all selected conversations in one operation.

  • Select all conversations if desired.

This is a basic usability feature that would make managing chat history considerably easier.