I guess this is a state where a software project may die ... it just takes a little too much thought to get going. And the longer I put the project aside, the more difficult it became to continue coding.
But meowBG made it through that trough, and meanwhile I implemented a very dumb "bot" who will pick random moves from the list of possible moves. I reorganized the match structure, too, so that the game doesn't always assume a human player on one side of the board, but it is possible to register any two "player"-like objects at the match. This could be, of course, a human player, but might as well we a bot or a player on the other side of an online BG server like FIBS.
So I registered two of my bots to play versus each other. Check it out: