Just made something like that, though I had to split the feeds based on year, otherwise they'd get close to 100 MB in size: https://hackernews.hn/item?id=36643086

That is good idea as well! That would require me to actually run the server (or github actions) to refresh the RSS feed, maybe something I would do later on.

There are quite common and they're usually called planet <topic>, which might help to find useful resources or software

A github action updating a static file is, well, webscale. And cheap/free to host.

Can you please ping me once this is up? We'd love to expose this feed in search results inside Kagi.