Data and code for: A fixed-operation-count solver for the hyperbolic Kepler equation with a proven uniform error bound

Data and software used to certify and benchmark a fixed-operation-count solver for the hyperbolic Kepler equation with a proven uniform error bound. The bundle contains the solver, the scripts that regenerate every artifact and figure, the ball-arithmetic certificate of the proven bound, the exact-arithmetic verification summary over 102,600 adversarial points, benchmark accuracy and cost results against six published methods, the error-map grid, the corner transect, and an independent root cross-check. All grids use random seed 20260720 against mpmath reference roots at 50 significant digits.