GCT / HLRP Corpus — Complete Zenodo Archive Index & Domain Matrix (v3)

Complete archive index and domain cross-reference matrix for the Geometric Coupling Theory (GCT) and Hydrogen Lifecycle Research Protocol (HLRP) corpus. Covers 127 published Zenodo records (historical snapshot, March 2026; the corpus now exceeds 220) across 17 classified domains with full citation table, domain-sorted paper listings, cross-domain 'Also' codes, domain key, and a 17×17 cross-reference matrix. α(d, β) = 1 + d/(d + β) | β = 6/23 | β = 6/23 (algebraic identity, not a fitted constant)