PGND (Primitive Global Non-distinction) PGND Beyond 1+1: History Provenance, Collective Direction Space, and the Route Toward 3+1 Lorentzian Causality From PGND Lorentzian Pregeometry to Emergent Higher-Dimensional Spacetime: A Guiding Framework for Investigating the Planck-to-Inflationary Transition RAS Interfaces Curvature-Memory Gravity Distance, memory, interface, structure, relational Directionality, reconstruction, gravitational, gravity biological, synthetic, modeling,