I'm sure most parts of this have been built many times by many persons (and probably AI bots too)

Everyone who wants to show a Fediverse feed on a Hugo page has to do something along that lines (other Static Site Generators do exist)

I know I have probably all described parts somewhere on my harddrive in a more or less usable but not interconnecting state and I am not even a "real" developer 😉

I agree, this would be cool and not even too hard. Who can spend some time? pretty please?