SecurityPaired

The four mode-pairing estimators beside the length, and what each refuses

4/4 passed in 0ms

Test	What it does	Result
test_chernoff_apart	Both Chernoff directions bracket the count at different widths, so neither is the other's inverse.	✅ pass
test_estimators_route	Each pairing estimator equals its _core call in the engine's argument order.	✅ pass
test_paired_refused	The four pairing estimators refuse every other family by name.	✅ pass
test_sampling_floor	The pairing sampling penalty does not vanish with the observed rate, and the phase bound is the monitored error plus exactly it.	✅ pass