a "socialist market" of worker-owned business collectives, which is not socialism as Marx and Engels conceived it.

...but which as a long history in both anarchism and pre-marxist socialism, some of which were very nice. ;)

Meanwhile, if you find the Social Democrat who advocates democratic ownership of the means of production in a worker/community stakeholder model... I'm impressed.

The green party itself is basically a creation of Bookchin, so it's easy to read up on. I'm just surprised it took that long to ditch "grassroots democracy except..."