ESET 3.0 — Elastic Spacetime with Secular Bulk Memory, Curvature-Gated Strong-Field Completion, and Causal Retrodiction (LRE)

ESET 3.0 is a unified, GR-compatible framework that models spacetime as a weak-dissipation elastic medium augmented by a causal bulk-memory (Maxwell–Cattaneo / Israel–Stewart) stress channel. The bulk memory acts as an isotropic, tensor-safe effective pressure that is AC-suppressed and DC-accumulating, enabling a controlled “horizon/ISW lane” in cosmological perturbations without introducing anisotropic stress. ESET 3.0 also includes a curvature-gated strong-field completion module that activates additional memory dynamics only in high-curvature regimes while reducing smoothly to the weak-field limit. Finally, it provides a Causal Retrodiction component (Light Rewind Engine, LRE) that uses closure residual diagnostics to support inference over retarded dynamics without invoking retrocausality. This OSF project hosts the full LaTeX source, derivations, and a battle-testing harness outlining falsifiable observational lanes (CMB ISW/lensing/LSS and lab phase/clock templates).