Ok, a bit more progress:
1) It wasn't trying to get on the road to the target staging area because it didn't have a path to that target that didn't involve going through player territory (even not counting the player planet it was already on). I told it to path through whatever if there was no purely non-player path.
But it bears mentioning that you've apparently split the AI's overall territory into a disjoint pieces, and entrapped the special forces blob in one of those pieces (that's in a long string of 2-wormhole planets, even).
2) It pathed through whatever, including player planets (but not engaging them much, just wormhole-to-wormhole)
3) Then it got stuck on your massive chokepoint and I spent a lot of time putting in more logging to figure out why the commands that were being sent from the AI thread weren't actually getting added to the unit command lists.
There was a black hole machine.
Are you guys sure you didn't want the SF to try to bust through? I'm not sure what choice it was left
Even when I scrap the black hole machine they're dragging their feet a lot on the way to the wormhole, trying to figure that out now.
In fairness, it never got as far as the system with the black hole machine for us (if it had, obviously we'd have scrapped it
. For us it came into Naos, blew everything up, and desynced the game before it could move on.
Also, I mentioned that it had attacked our systems twice. The first time was to get in to that corridor of systems you mentioned, though clearly at some point once in there it was going to have to get out. The full extent of the graph cut wasn't immediately obvious to me until pointed out by mcp this evening.
What we ended up doing when we played tonight was to remove quite a few SF posts down the branch we didn't want it to travel, which seemed to stop it and encourage it to turn around. It eventually came out through the opposite side (Luyten's Star) and we let it pass through without much incident.
Thanks very much for looking at this, I'm glad to hear there will be some tweaks to the AI handling of the situation. The whole experience has been... educational.