As I increasingly rely on Typing Mind for simple searches, I find myself wishing for this feature more and more.

Also, I'm getting close to maxing out my 10 megabytes of sync, even without attachments, and I assume temporary chats won't be synced, so that would be a nice small bonus.

Ideally, it would be an icon button (a timer?) or toggle next to the models' drop-down. I don't love how OpenAI makes you enable it in the models' drop-down because I'll be using it quite a bit. I'm a software designer, and a minimalist one at that. However, I believe in this case, it deserves to be in the forefront, especially since the UI is on the busier side already :) It wouldn't add too much.

"responses more than X old" and/or consider how long the duration of the chat was. if its less than 1m, then seems superficial

Awesome idea and definitely necessary!