Light Frame Cadence Theory: Invariant Cadence and Finite Representability (LFCT Spine — frozen)

Light Frame Cadence Theory: Invariant Cadence and Finite Representability (LFCT Spine — frozen) This document records the canonical spine of Light Frame Cadence Theory. It establishes invariant cadence and finite representability as fixed structural constraints and enumerates the minimal principles required for representational coherence. All statements are given strictly at the constraint level, without dynamics, transport mechanisms, field models, or global time assumptions. The spine is frozen. It is not subject to iterative revision, extension, or reinterpretation and serves as a stable reference anchor for the Light Frame Infrastructure Series and all related theoretical, observational, and applied work. Subsequent volumes may derive consequences, register concepts or forms, or apply these constraints in specific contexts. No additional foundational structure, constraint, or regime is introduced here or elsewhere beyond what is recorded in this spine. Associated observational test runs and data are archived separately on Zenodo and linked as supplementary datasets.