SΔϕ-31 — Reopening Closed Defaults: Minimal Intervention Conditions after Governance Diagnostics (v1.0)

This paper extends SΔϕ-30 by introducing a minimal intervention layer within the Sofience–Δϕ Formalism. While earlier documents established the conditions of editable governance and the diagnostics of formally open but materially closed systems, this paper asks how a closed default can be actually reopened once closure has been diagnosed. The central claim is that reopening is not a passive property of a system but an enacted intervention structure. Four minimal operations are proposed: trigger recognition, cost assumption, reopening act, and persistence of re-entry. Trigger recognition identifies a compressed anomaly as a signal for intervention rather than background noise. Cost assumption names the…