There isn’t currently a way to automatically add the date to conversation titles. Custom summary themes only affect the summary itself. For now, you’d need to rename the conversation manually, but a configurable title format such as YYYY.MM.DD - [Generated title] would be a useful feature request.
As Vic noted, feature isn’t there. Just sharing a semi-resolution I’ve now been in the habit of as some of my recordings I make are actually about something that happened days ago, so can’t use the Pocket’s auto-dating.
When I start a recording, I immediately speak the date, sorta. For example, if doing a job walk or making a recording about September 10th, I hit the Start button and then say the numerical of the date my summary is about. “0910 Hybrid OR project” take a paused breath so Pocket captures that as its own dedicated sentence. Then I continue with my recording. I literally say the words of the numbers “Zero Nine One Zero Hybrid OR Project”
My Summaries always get that “0910” as part of the first sentence so I don’t have to trust date stamping or AI mixing up my intensions.