Code and results for "How well can the magnification of a strongly lensed gravitational wave be measured?"

Code, parameter-estimation posteriors and GW+EM lens-reconstruction results for the paper How well can the magnification of a strongly lensed gravitational wave be measured? A benchmark with GWTC-4.0 populations and O4a noise. The record contains a snapshot of the analysis code (commit b2a2716 of https://github.com/lanhung/GW_lensing), joint parameter estimation of 120 simulated lensed image pairs for O5-like and Einstein Telescope networks, the Bayesian GW+EM reconstructions of the absolute magnification (two-stage and full strain-level analyses, with the source-position prior normalized per lens and, for comparison, unnormalized), the tables of the paper with the command that reproduces them, and the approximation checks reported in the paper (exact image-position likelihood, relative-binning accuracy). See README.md for the layout.