OkMathOrg/bouncing-cosmology: Covariant Two-Field Perturbations Through a Curvature-Driven Bounce in Closed FRW Cosmology (release 5.0.0)

Code, fingerprinted numerical artefacts, Stage-3 verification report, figure scripts and manuscript sources for version 5 of arXiv:2511.18522, superseding versions 1-4. Licensing is file-specific: executable code under MIT (LICENSE-CODE); manuscript, documentation and generated data under CC BY-NC-ND 4.0 (LICENSE-MANUSCRIPT), without revoking permissions granted in earlier archived releases. See README.md and REPRODUCIBILITY.md.