Structural reductions toward the quartic Hessian conjecture in dimension four

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 deposit does not claim the quartic Hessian conjecture in dimension four or the two-dimensional Jacobian conjecture.