Request: Add Favorite/Bookmark feature for Tasks/Chats

[absurdly-nerdly]

Often I will pause a task, do some other tasks, then go back to the 1st task. And sometimes there is a task that went especially well, or had some information I would like to go back and use later.
A Favorites list would come in handy.
Also to clean up and delete most of my chats which I no longer need - a filter to select/delete only unfavorited chats would be a plus.