CDN-254: The Lensing Cross-Check

Cross-matches 25 clusters with published weak-lensing masses (CLASH, LoCuSS, WtG, CCCP) against four X-ray/SZ survey catalogs (SPT-SZ, ACT DR5, Planck PSZ2, eROSITA). 95.6% of 45 dual-mass pairs remain in-band from both channels. Bias–κ anti-correlation r = −0.54: coherence field couples asymmetrically to thermodynamic vs gravitational probes. Locked CDN-242 seven-term proxy absorbs 20–40% mass-channel systematics through its feature vector. Part of the GCFT dark-sector cluster arc.