Merge pull request #24 from inaciovasquez2020/docs/infra-wording

docs: align wording on shared reproducibility infrastructure

Author: inaciovasquez2020

README.md

@@ -1,3 +1,5 @@
 # Chronos Certificates
 
 This repository is intentionally **certificate-only**. As of tag `chronos-certificates-frozen`, the Chronos depth constants and related artifacts are frozen, cryptographically signed, and treated as canonical. The files `chronos_constants.json` and `Chronos/Cert/ChronosDepthConstants.lean`, together with their corresponding `.minisig` signatures, constitute the complete, verifiable Chronos certificate set. No Chronos theory is developed here: all mathematical definitions, transport lemmas (including the PSH → boundary-overlap conditional), and proofs live upstream in `urf-core`. Any modification to the frozen artifacts requires an explicit unfreeze decision, regeneration of signatures, and a new freeze tag.
+
+This project relies on shared tooling and reproducibility infrastructure provided by the scientific-infrastructure repository; it contains domain-specific research code only.