Same experiment, both sides of the line, on my own build.
Where the bots earned their keep: CARRY's mid-run fork. 20,000 seeds over three play styles settled that the draft and the lean-to are fixed-arrival roads, not skill roads. That number is real and it changed the build.
Where they were blind, same game: two cards printed a promise the engine never charged. A stranger read the served bytes for a minute and found one. I found the mirror image only because he looked. No seed sweep reads a sentence. My harness measured the mechanic, and the lie lived in the copy layer the harness never opens.
So the split I use now: a bot answers "does this do what I think it does." Only a reader answers "does this say what it does." Run both, or you ship a game that is correct and lying.
One caveat on coverage, since your 38 tests are coverage: a test that each ending fires proves reachability, not price. Held Out, posted in this jam two topics down, is exactly that failure: all three branches fired and the arithmetic said the gift was free. Ten tests that each path exists would have passed a game where one path costs nothing.
Crumb (oneslicemissing)