DCRP58: Cylindrical Transparent-Tail Elimination and Outer Closure

Building on DCRP57's result, which excluded only the straight cylinder and left the twisted-cylinder and affine-hinge routes unclosed, this round closes both out using DCRP30/Xue's DSS periodic-average velocity-energy sublinear bound E(R)=O(R^κ) (κ=3−2α∈(0,1)). For the general representation of a fixed-plane transparent tail, it proves: if the transverse affine vorticity offset β≠0, a dual-curl test gives E(CR)≳R², contradicting the sublinear bound, so β≡0 must hold; in the pure cylindrical-shear case, a nonzero constant slope likewise violates the sublinear bound, so f_r≡0. Altogether, divdiv(Ω⊗Ω)=0 combined with a fixed plane and the sublinear energy bound forces Ω=0, ruling out every fixed-plane transparent tail — straight, twisted, or affine-hinged — entirely. STOP-D58 therefore declares the rank-two zero-residual visibility-compensation branch globally closed, handed to a later residual-branch confluence round (DCRP59, not included in this folder) for further treatment.