TBRSS has a new feature: a reading history. That is, when you read an article, or start to read it, it is added to your reading history, and you can look back by date and see what you have been reading.
The reading history is not forever; there is a limit (at present, 1000) to how many entries are stored. And of course you can clear it yourself.
To my mind, this solves, directly and humanely, the essential problem that starring and full-text search, only solve obliquely: “what was that interesting article I read the other day?”