Please implement time stamps

Feature request: Please add optional timestamps to ChatGPT conversations. I often return to older chats for health, pet care, gardening, tech help, and troubleshooting. It would be very helpful if each conversation, or each user/assistant message, showed the date and time it happened. Suggested options: * Show full date/time on each message when tapped or long-pressed * Add “conversation started” and “last updated” dates * Let users toggle timestamps on/off in Settings * Include timestamps when exporting or sharing chats This would make it easier to track progress over time, especially for things like symptoms, pet injuries, plant care, repairs, and ongoing projects.