Across 300 sampled CPU payloads, `rho_c_estimate` was effectively pinned at the 2.8 search ceiling with vanishing brackets, `last_stable_fraction` stayed 0.0 throughout, `last_mean_max_real_part` stayed strongly positive around 16.51 to 16.57 at N=2048, `last_reciprocity_score` stayed tiny around 0.0149 to 0.0155, and `last_leading_module_mass` stayed only about 0.317 to 0.318 with one unfinished run still already strongly unstable at N=1024.