I have long been eager to leave Pinboard. This is the first viable alternative I've seen: written in reasonable languages, storage through Sqlite and not some burdensome db server, self-hostable without any docker BS. Very promising!
I've been looking forward to this for a long time [1]. I had no idea they would release the source under a permissive license. Can't wait to try it out!
I've had a few feature ideas too. I'm currently paying for the hosted instance of Miniflux, but it's nice to know that self-hosting a personal fork with the exact feature set I want is incredibly easy: small code base, single executable, minimal dependencies.
Not much. It just has its own button on the home screen (iOS) and behaves (mostly) like a native app. A browser bookmark would work as well.
Miniflux is designed to work well on a small screen with touch input. So the fact that, unlike some other options, it doesn't have a native app is not too much of a limitation.
I wrote an article [1] in this style a while back.
I started with a problem that I had no idea how to solve (finding elemental spellings for words like "CrYPtOgRaPHEr"). I started with the most straightforward approach I could think of, and wrote the article gradually as I went through the process of finding better and better solutions.
I ended up learning about data structures, reasoning about time complexity, and using tools to profile Python programs.
There wouldn't have been much to write about if I had just 'gotten things to work', then moved on. I found that writing the article forced me to strive for much deeper understanding than I might have otherwise.
I'm eager to read the other links posted in response to your question.