SamplerBatch

Detector sampling engines against the DEM marginals

1/1 passed in 4083ms

Test	What it does	Result
test_marginals_match_dem	Each detector and observable fires at the DEM's exact marginal (1 - prod(1 - 2 p_i)) / 2 on an X_ERROR surface memory, on the native frame engine and on Python trajectories; at p = 0 both are exactly silent.	✅ pass