Anonymous, AI-assisted, unrefereed computer-assisted candidate. Exact five-support exclusion, tangent multiplicity-six nullcone containment, three rational localized-colon elements, and sixteen exact rational source-module syzygies in a frozen fourth Macaulay block. This release does not prove fourth-target membership, secant closure, the quartic Hessian conjecture in dimension four, or the two-dimensional Jacobian conjecture. Version DOI: https://doi.org/10.5281/zenodo.22216400