Closed-Form Dual-State Predictions for Isoscalar Yield Scaling, Medium-Mass Ground-State Stability, and Neutron Skin Bifurcations in Calcium Isotopic Chains

Standard nuclear density functionals diverge at extreme neutron-to-proton asymmetries. This priority timestamp manuscript presents blind, parameter-free numerical predictions for active experimental campaigns at FRIB and RIKEN RIBF. Using a closed-form isoscalar variational mapping with zero tuned constants, this work resolves the long-standing tension between hadronic, dipole, and weak (CREX) neutron skin probes while establishing strict, non-negotiable falsification thresholds for fragmentation yield scaling, medium-mass bound survival (62,64Ca, 68,70Ti, 70,76Cr), extreme calcium neutron skins, and the 22Si mirror charge radius ahead of incoming facility data releases.