ΔΦ Coupling-Sensitive Precursor: Survival of a Pre-Registered Adversarial Falsification Protocol

This record documents a pre-registered adversarial falsification test of a revised precursor diagnostic incorporating an explicit cross-channel coupling term.The original scalar formulation of Π(t) was previously falsified due to lack of specificity. The revised Π′(t) was evaluated under the identical frozen-threshold protocol using:• Brownian motion null systems• True coupled onset systems• Block-shuffle surrogate tests• Subcritical controlsThe revised diagnostic shows early detection exclusively in the coupled system while suppressing false positives in all null and control conditions, thereby passing the predefined falsification criteria.The accompanying Colab notebook provides a fully reproducible implementation:Unified ΔΦ test environment (Colab):https://share.google/lmP24lWxzKxWgHMQ6⁠�This entry serves as a transparent computational benchmark and methodological correction following the earlier negative result.