Some comments on the progress of the login work so far:
Up to now, it's not clear which inrupt library to use best for the Solid login
the browser lib tries to change the browser history with history.replace() which raises "DOMException: The Operation is insecure" and seems to be a bug with Firefox?
node lib gave us errors with util.types as being undefined (couldn't find a reason why...)
At Klausurtagung 2023 @dschraudner and @se-schmid have been working on integrating Solid login into the RDF Browser.