KIET Project Phase D (v1.1): Reproducibility Core Archive for the Phase C "Citadel" Numerical Validation

This deposition provides the Phase D v1.1 Reproducibility Core Archive for the KIET Project, containing the primary numerical artifacts required to reproduce the completed Phase B–C “Citadel” validation baseline within the Einstein Toolkit (ETK_2024_11 “Lovelace”). The archive includes: Einstein Toolkit parameter files (.par) for vacuum and coupled toy-model runs Execution logs confirming stability (NaNChecker clean, ierr = 0) Constraint history outputs (Hamiltonian and Momentum L2 norms in HDF5/ASCII form) Minimal analysis scripts for verifying the observed convergence order (p ≈ 1.85) This dataset is released as a numerical reproducibility supplement supporting independent verification and extension by the community. Scope Disclaimer: All results are provided strictly within the context of a toy-model numerical source-term coupling framework. No experimental or physical propulsion claims are made. The full artifact bundle (.par, stdout, HDF5 constraint histories) will be uploaded in the immediate v1.2 update. Related works: Phase B–C Citadel Validation DOI: 10.5281/zenodo.18645710 Phase D Technical Roadmap DOI: 10.5281/zenodo.18653249