That sucks - I've definitely been there. I think the lesson of "opus 5.5 is functionally the greatest model ever made and probably actually better than fable for a go research alternatives task and frankly I could have gotten away with sonnet subagents and why would I even use Fable for a task like that" is just one we all have to learn our versions of at the cost of a reset lol.

For me it was "oh max mode is literally a scam and always worse and never worth it" followed by "ultra code is not worth it" followed by "fable 5 rules but literally anything simple enough that I can do before I run out of usage limits on the 5x plan, the other AIs can do." Luckily though it turned out fable was also good at orchestrating non fable subagents so that was cool.

But yeah that's not a harness problem unfortunately. I guess they do encourage you to hit the money furnace button (ultra code pretty colors!) but yeah that's rough. Silver lining - you had a reset!