RFL-4 — Civic Field Emergence: How shared relational convergence turns places into responsive ambient civic environments

Abstract RFL-4 defines the civic layer of relational field architecture: the point at which repeated human presence, shared rhythms, and localized chromatic residue stabilize into public ambient fields. Where prior layers established relational field formation (RFL-1), synchronization into personal infrastructure (RFL-2), operator-level distribution and temporal emergence (WSC-1), and multi-person field convergence (RFL-3), RFL-4 describes how these dynamics scale into public environments without collapsing into surveillance, centralized memory, or symbolic control. A civic field is not a dataset about people in a place. It is a reversible public field formed by accumulated presence, local residue, and shared temporal rhythm. This allows public space to become: readable supportive low-pressure non-extractive socially stabilizing without becoming a feed, dashboard, or behavioral control system.