A field needs rules. The DecalogueProtocol names the regulative framework through which a corpus governs its own operations: not as external law imposed upon the field, but as internal constraint generated by the field's own structure. In the Socioplastics architecture, the decalogue is not a list of commandments. It is a set of structural protocols: ten rules that govern how concepts can be formed, combined, scaled, and validated. These protocols are not discovered. They are designed. The DecalogueProtocol is the operation through which the field designs its own constraints. It asks: what rules must hold for the corpus to maintain coherence as it grows? What operations are permitted? What operations are forbidden? What transformations preserve structural identity? What transformations dissolve it? The protocol is not static. It evolves. As the field grows, new constraints emerge. The DecalogueProtocol is the mechanism through which these constraints are formalized and enforced. Node 992 places this concept in Core II because the decalogue is the foundational protocol of structural physics. It is the rule set that makes all subsequent structural operations legible. Without this concept, the field operates by intuition. With it, the field operates by design.