I wonder if escalating to Opus or Fable would change the behavior for the larger system level issues. I see the mention of starting with Opus, but now that the project is further along, perhaps a chance to take a second look.

I would be interested in comparing this to 5.6 Sol on Codex instead of Claude. There's no moment where I thought claude had beat codex except for about 2 weeks earlier this summer. Things have drastically changed in favor of codex. The harness or something must be better.

I'd be curious to see how this would run on Qwen3.8 27B