This first one has a QR code linking to its source: https://github.com/niilopoutanen/rss-feed

Unless I missed it, the second doesn't claim to be open source. In any case this appears to be its source: https://github.com/maco2ou/finefeed

The code for the first is there, its just on other branches, they seem to have a very unusual way of using git.

Even when hanging the flag vertically, this is the correct orientation, with the stars in the upper left.

Yep, according to the US Flag Code:

When displayed either horizontally or vertically against a wall, the union should be uppermost and to the flag’s own right, that is, to the observer’s left.

TBF, it does have different instructions about how to display the flag outdoors, hard to tell from this perspective if it was actually hung properly.