# $comment
This closed schema validates the reviewed structure and pinned digest string. JSON Schema cannot recompute the recursive semantic digest, raw-byte SHA-256, duplicate-key safety, or cross-collection references; bin/explore-phenomena-deep.ts performs those runtime checks.

# description
Immutable, read-only cross-domain mathematics exploration metadata. Validation grants no truth, proof, diagnosis, KARMA, authority, publication, deployment, or automatic action.