Recently opened / partially read

About 2-3 times weekly, the app closes in a way that it doesn't recover the article left open (deep sleep); other times I need to reference an another article. With thousands of articles in the database, and heavy use of Open random article, I lose the article I was last reading.

If I predict I'm going to pause reading for a whole day, I usually screenshot the article, and find it later. Read position is almost never lost, which indicates the app knows what I have started reading.

Possible solutions:
- Filter, with similar UI to tags, for saved read position.
- Sort by recently opened.
- Pin the last opened article, with long press to view last n.

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