"""n43 — the measurement (headstone 18). Pre-registered pipeline, run July 2026.
Data: 236 WALLABY PDR2 HI mom1 maps (CADC minoc, anonymous), WKAPP kinematic
geometry (CASDA TAP), 2M++ reconstructed 3D velocity field (Carrick+2015).
Estimator D = side rotation asymmetry (validated on displaced-well mocks);
prediction: sign(D) = sign(v_pec . receding-axis), binomial test.
RESULT: N=111 after pre-registered cuts; agreement 56/111 = 50.5%;
binomial one-sided p = 0.50; Spearman(|D|,|v_par|) = -0.02 (p=0.83).
NULL GATE FIRED AS PRE-REGISTERED: prediction refuted at pilot level.
Kills: the slow-rearrangement drainage dynamics at galactic scales and the
drainage-lag reading of merging-cluster lensing offsets (pre-registered
joint grave). Survives: the static drainage sector (n40).
Full runner preserved in the session transcript; results: n43_results.npy
(columns: D, v_par [km/s], qflag).
"""