every sampled 4096-state GPU payload again collapsed corr_c_estimate to essentially zero, with corr_high ranging from about 2.92e-53 up to 6.52e-10 and bracket widths of the same order. The lowest mode remained bulk-spread in every sample, with last_shell_localization_score only about 1.0238 to 1.0245 and shell_mass_fraction about 0.4911 to 0.4915 despite strongly negative minimum eigenvalues near -5.14.