FiniteBb84

Finite-key BB84-WCP through q.Link with a q.KeyBlock

7/7 passed in 470ms

Test	What it does	Result
test_asymptotic_intact	Leaving the block off returns the asymptotic GLLP rate byte for byte and no length.	✅ pass
test_below_asymptotic	The finite rate never exceeds the asymptotic rate of the same link, at any distance, block size or basis bias.	✅ pass
test_bias_optimum	Sifting at 0.8 beats 0.5, and 0.98 starves the test basis to zero key.	✅ pass
test_named_carrier	q.PolarisationKeying reaches the same finite-key path, frame drift widening the phase bound and costing key.	✅ pass
test_paths_agree	The sampled pulse train and the closed-form expected counts reach the same length to 5%, labelled measured and expected.	✅ pass
test_rate_converges	The reported rate rises with the block and settles by 1e14.	✅ pass
test_result_rows	A finite run reports the rate as length over block, s0, s1, phi and n_key, and the asymptotic rate in explain.	✅ pass