The Benchmark Is the Baseline: I Priced the Imported Fiducial Cosmology Beneath DESI's Full-Shape Robustness Claim, and the Test's Truth Is Its Own Fiducial

Prices Queue-2 item Q2-22, arXiv:2509.08057 (Gsponer et al. / DESI Collaboration, fiducial-cosmology systematics for the DESI 2024 Full-Shape analysis), on its verified abstract claim, the TSI store record, and the full text (v1). The load-bearing imported step is the Planck 2018 baseline: the mocks' true cosmology IS the baseline fiducial (Table 1), so all shifts measure recovery back to the starting fiducial; the sigma_DR1 denominators are EZmock-derived and rescaled after underestimating the real DR1 variance; the beyond-LambdaCDM grids shift up to 6.40 sigma_V25 under a LambdaCDM fit and are removed from the headline by a w0waCDM refit plus a noiseless baseline-cosmology SN mock (Mb = -19.263 fixed); and the largest shift, 0.45 sigma_DR1 in ShapeFit (m+n) (quadrature cost +9.7%, vs +2.4% for FM's 0.22), is printed and then explicitly not propagated. DERIVED-INDEPENDENT. Quantum gravity NOT SOLVED; vacuum catastrophe NOT SOLVED.