Viewing older chats had become a nightmare

I found an additional pattern for the “just viewing old chats makes them jump to the top” issue.

In Projects, newer chats around Nov 30 / Dec 5 / Dec 9 keep their original dates and do not move when I only open them for reading.

But older chats before around Nov 30, 2025 jump to the top immediately when opened, and their displayed date changes to today, May 3.

This looks like the system is updating the chat’s metadata just from viewing it, possibly using “last viewed” or “updated_at” instead of “last message time” for sorting.

Please make Recents/Projects sort by actual last message activity, not by merely opening or viewing an old chat for reference