Vary the equation of state and compare expansion, distance and approximate growth against a fixed ΛCDM reference.
Current interpretation
The continuity-equation sign is corrected in both H(z) and distance. The historical benchmark button and curve use the same w₀, wₐ and H₀; the benchmark is explicitly not a new fit.
Model scope and provenance
CPL is a phenomenological cosmology model, not the released flat-space electromagnetic solver. No identification of cosmology parameters with g, k=1.92 or the k≈1.549 simulation lead is supplied.
Numerical integration with declared parameters; no likelihood evaluation or new MCMC.
Historical sources remain separately identified; availability is not a safety endorsement.