Replication Data for: The r-g Race — Can Nominal Growth Outrun Demographic Fiscal Pressure?

Replication package for \"The r-g Race: Can Nominal Growth Outrun Demographic Fiscal Pressure?\" by Brian Peters (2026). Simulates sovereign debt dynamics for 31 sovereign-rated issuers through 2050, combining UN demographic projections with income-conditioned fiscal coefficients from the doom loop paper. Key finding: the pooled OADR-to-revenue coefficient (+8.4, n.s.) is a Simpson paradox artifact — OECD countries show +24.3 (p<0.001) while non-OECD show -101.4 (p<0.001). Under income-conditioned piecewise specification, the expenditure-revenue asymmetry narrows from 6:1 to 3.1:1 below 30% OADR and 0.8:1 above 30% for OECD countries. Japan (229% to 187% by 2050), Korea (52% to 33%), and Italy (135% to 98%) escape doom loop classification. Includes Monte Carlo uncertainty quantification, rating feedback endogenization, four equilibrating mechanism scenarios (financial repression, pension reform, revenue mobilization, combined portfolio), and required adjustment solver. Contains 8 tables, 8 figures, all scripts and processed data.