Feature Request: Merge (out of sync) conversations from multiple devices

[AntlerDM]

This is great! Thanks for building this.

I think it would be a good feature to merge conversations from multiple devices in the event that they are not synced. I have had a few problems with iCloud Messages and I am not confident that some very long conversations are 100% in sync.

Maybe you could export a conversation from each device to an intermediate file and use a command line tool to merge multiple conversations, removing duplicates and maintaining the timeline based on time stamps. It might need to calculate an offset (from duplicate messages) so it is able to accurately merge the messages in the event that device times are also not in sync.