EstimatorRecovery

Phase 4: channel estimation from simulated frames and its 1/sqrt(N) law

4/4 passed in 3579ms

Test	What it does	Result
test_bounds_bracket_truth	At seeds 1 to 4, $t_{min}\le T$ and ${\xi }_{max}\ge \xi$ as applied.	✅ pass
test_bounds_only_under_finite_size	q.Asymptotic reports no interval; q.FiniteSize fills t_min and xi_max, and LinkResult carries the same pair.	✅ pass
test_error_falls_as_root_n	Over 12 seeds at $N={10}^4$ to ${10}^6$ the RMS error of both estimators falls by a factor in [4, 25], which brackets $1/\sqrt{N}=10$ and excludes $N^{-1/4}$ and $1/N$.	✅ pass
test_estimator_consistency	With a perfect phase reference the estimators recover the pinned $T=0.5$ and input-referred $\xi =0.02$ from ${10}^6$ symbols, each inside five sigma.	✅ pass