La Profilée - The Structural Logic of Intervention

La Profilée establishes that a system persists if and only if its Integration Ratio IR = R / (F · I · C) ≤ 1. When IR > 1, structural identity erosion is ongoing. This paper derives the structural logic of intervention under overload conditions. Interventions act along two structural directions: load reduction (ΔR) and capacity restoration (ΔI, ΔF, ΔC). These classes differ structurally in speed and type of effect. ΔR acts immediately but produces stabilization only — it does not restore structural capacity. ΔI, ΔF, and ΔC act slowly but produce genuine restitution of structural integrity. From this asymmetry follows a structural necessity: effective intervention under overload requires a two-phase sequence. Phase 1 (Stabilization) reduces R sufficiently to bring IR ≤ 1 and halt further structural erosion. Phase 2 (Restitution) rebuilds I, F, and C while the system is stabilized. Neither phase alone is sufficient. This two-phase structure is not a management recommendation. It is a structural consequence of the asymmetry between the speed of load reduction and the speed of capacity restoration. The paper further establishes that T_visible — the interval between IR > 1 onset and visible collapse — is not merely an observation window but the structural control window: the only interval in which Phase 2 restitution remains possible.